Common Weakness Enumeration
CWE-476
AllowedNULL Pointer Dereference
Abstraction: Base · Status: Stable
The product dereferences a pointer that it expects to be valid but is NULL.
6305 vulnerabilities reference this CWE, most recent first.
CVE-2026-9716 (GCVE-0-2026-9716)
Vulnerability from cvelistv5 – Published: 2026-06-25 15:02 – Updated: 2026-06-25 15:49
VLAI
EPSS
VEX
Summary
CWE-476 NULL Pointer Dereference vulnerability exists that could cause a denial-of-service condition, rendering the device’s HMI and configuration functionality unavailable when malformed requests are received over exposed network interfaces.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-476 - NULL pointer dereference
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Schneider Electric | PowerLogic™ P7 |
Affected:
Version V02.003.001.000 and prior
|
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CVE-2026-9639 (GCVE-0-2026-9639)
Vulnerability from cvelistv5 – Published: 2026-06-26 15:39 – Updated: 2026-06-26 16:02
VLAI
EPSS
VEX
Title
Authenticated Denial of Service via Malicious Backup Tarball in LXD
Summary
Nil-pointer dereference in CreateCustomVolumeFromBackup in LXD up to version 6.8 and 5.21 on Linux allows an authenticated user with can_create_storage_volumes permissions to cause a denial of service via a specially crafted custom-volume backup tarball that omits the expires_at snapshot field.
Severity
6.5 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-476 - NULL pointer dereference
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/canonical/lxd/security/advisor… | vdb-entryvendor-advisory |
| https://github.com/canonical/lxd/pull/18320 | patch |
| https://github.com/canonical/lxd/pull/18390 | patch |
Impacted products
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CVE-2026-9567 (GCVE-0-2026-9567)
Vulnerability from cvelistv5 – Published: 2026-05-26 17:45 – Updated: 2026-05-26 18:23 X_Open Source
VLAI
EPSS
VEX
Title
GPAC MP4Box isom_intern.c MergeFragment null pointer dereference
Summary
A security flaw has been discovered in GPAC up to 2.4.0. Affected is the function MergeFragment of the file src/isomedia/isom_intern.c of the component MP4Box. The manipulation results in null pointer dereference. The attack needs to be approached locally. The exploit has been released to the public and may be used for attacks. The patch is identified as 525bf1af642c30af04e4df5345e6d798c0a4d8a1. It is advisable to implement a patch to correct this issue.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
7 references
| URL | Tags |
|---|---|
| https://vuldb.com/vuln/365629 | vdb-entrytechnical-description |
| https://vuldb.com/vuln/365629/cti | signaturepermissions-required |
| https://vuldb.com/submit/816075 | third-party-advisory |
| https://github.com/gpac/gpac/issues/3549 | issue-tracking |
| https://github.com/user-attachments/files/2719691… | exploit |
| https://github.com/makesoftwaresafe/gpac/commit/5… | patch |
| https://github.com/gpac/gpac/ | product |
Impacted products
Credits
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CVE-2026-9529 (GCVE-0-2026-9529)
Vulnerability from cvelistv5 – Published: 2026-05-26 04:15 – Updated: 2026-05-26 12:45 X_Open Source
VLAI
EPSS
VEX
Title
GNU LibreDWG Dwggrep Utility dwggrep.c match_BLOCK_HEADER null pointer dereference
Summary
A security flaw has been discovered in GNU LibreDWG up to 0.14. The affected element is the function match_BLOCK_HEADER of the file dwggrep.c of the component Dwggrep Utility. Performing a manipulation results in null pointer dereference. The attack requires a local approach. The exploit has been released to the public and may be used for attacks.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
6 references
| URL | Tags |
|---|---|
| https://vuldb.com/vuln/365548 | vdb-entrytechnical-description |
| https://vuldb.com/vuln/365548/cti | signaturepermissions-required |
| https://vuldb.com/submit/814273 | third-party-advisory |
| https://github.com/LibreDWG/libredwg/issues/1247 | issue-tracking |
| https://github.com/HackC0der/CVE-Repos/blob/main/… | exploit |
| https://www.gnu.org/ | product |
Impacted products
Credits
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CVE-2026-9503 (GCVE-0-2026-9503)
Vulnerability from cvelistv5 – Published: 2026-05-25 21:00 – Updated: 2026-05-26 12:49 X_Open Source
VLAI
EPSS
VEX
Title
GNU LibreDWG DWG File decode.c dwg_next_entity null pointer dereference
Summary
A security flaw has been discovered in GNU LibreDWG up to 0.14. This impacts the function dwg_next_entity of the file src/decode.c of the component DWG File Handler. The manipulation results in null pointer dereference. The attack must be initiated from a local position. The exploit has been released to the public and may be used for attacks. The patch is identified as 8f03865f37f5d4ffd616fef802acc980be54d300. Upgrading the affected component is advised.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
7 references
| URL | Tags |
|---|---|
| https://vuldb.com/vuln/365485 | vdb-entrytechnical-description |
| https://vuldb.com/vuln/365485/cti | signaturepermissions-required |
| https://vuldb.com/submit/814260 | third-party-advisory |
| https://github.com/LibreDWG/libredwg/issues/1245 | issue-tracking |
| https://github.com/HackC0der/CVE-Repos/blob/main/… | exploit |
| https://github.com/LibreDWG/libredwg/commit/8f038… | patch |
| https://www.gnu.org/ | product |
Impacted products
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CVE-2026-8850 (GCVE-0-2026-8850)
Vulnerability from cvelistv5 – Published: 2026-05-26 16:54 – Updated: 2026-05-26 18:40
VLAI
EPSS
VEX
Title
IBM HTTP Server is affected by multiple vulnerabilities
Summary
IBM HTTP Server 8.5, and 9.0 is vulnerable to denial of service via the optional module mod_ibm_upload.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-476 - NULL Pointer Dereference
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://www.ibm.com/support/pages/node/7274065 | vendor-advisorypatch |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| IBM | HTTP Server |
Affected:
8.5.0 , ≤ Interim Fix 002
(semver)
Affected: 9.0 (semver) cpe:2.3:a:ibm:http_server:8.5:*:*:*:*:*:*:* cpe:2.3:a:ibm:http_server:8.5.0:*:*:*:*:*:*:* cpe:2.3:a:ibm:http_server:9.0:*:*:*:*:*:*:* cpe:2.3:a:ibm:http_server:9.0.0:*:*:*:*:*:*:* |
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CVE-2026-8783 (GCVE-0-2026-8783)
Vulnerability from cvelistv5 – Published: 2026-05-18 02:15 – Updated: 2026-05-18 19:27
VLAI
EPSS
VEX
Title
omec-project amf dispatcher.go UERadioCapabilityCheckResponse null pointer dereference
Summary
A security vulnerability has been detected in omec-project amf up to 2.1.3-dev. This impacts the function UERadioCapabilityCheckResponse of the file ngap/dispatcher.go. Such manipulation leads to null pointer dereference. The attack can be executed remotely. The exploit has been disclosed publicly and may be used. Upgrading to version 2.2.0 will fix this issue. Upgrading the affected component is advised. The same pull request fixes multiple security issues.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
7 references
| URL | Tags |
|---|---|
| https://vuldb.com/vuln/364407 | vdb-entrytechnical-description |
| https://vuldb.com/vuln/364407/cti | signaturepermissions-required |
| https://vuldb.com/submit/811655 | third-party-advisory |
| https://github.com/omec-project/amf/issues/675 | exploitissue-tracking |
| https://github.com/omec-project/amf/pull/666 | issue-trackingpatch |
| https://github.com/omec-project/amf/releases/tag/v2.2.0 | patch |
| https://github.com/omec-project/amf/ | product |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| omec-project | amf |
Affected:
2.1.3-dev
Unaffected: 2.2.0 cpe:2.3:a:omec-project:amf:*:*:*:*:*:*:*:* |
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CVE-2026-8782 (GCVE-0-2026-8782)
Vulnerability from cvelistv5 – Published: 2026-05-18 02:00 – Updated: 2026-05-18 20:16
VLAI
EPSS
VEX
Title
omec-project amf NGAP Message handler.go null pointer dereference
Summary
A weakness has been identified in omec-project amf up to 2.1.3-dev. This affects an unknown function of the file ngap/handler.go of the component NGAP Message Handler. This manipulation causes null pointer dereference. Remote exploitation of the attack is possible. The exploit has been made available to the public and could be used for attacks. Upgrading to version 2.2.0 mitigates this issue. It is recommended to upgrade the affected component. The same pull request fixes multiple security issues.
Severity
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
7 references
| URL | Tags |
|---|---|
| https://vuldb.com/vuln/364406 | vdb-entry |
| https://vuldb.com/vuln/364406/cti | signaturepermissions-required |
| https://vuldb.com/submit/811654 | third-party-advisory |
| https://github.com/omec-project/amf/issues/674 | exploitissue-tracking |
| https://github.com/omec-project/amf/pull/666 | issue-trackingpatch |
| https://github.com/omec-project/amf/releases/tag/v2.2.0 | patch |
| https://github.com/omec-project/amf/ | product |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| omec-project | amf |
Affected:
2.1.3-dev
Unaffected: 2.2.0 cpe:2.3:a:omec-project:amf:*:*:*:*:*:*:*:* |
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CVE-2026-8781 (GCVE-0-2026-8781)
Vulnerability from cvelistv5 – Published: 2026-05-18 01:45 – Updated: 2026-05-18 10:02
VLAI
EPSS
VEX
Title
omec-project amf handler.go RANConfiguration null pointer dereference
Summary
A security flaw has been discovered in omec-project amf up to 2.1.3-dev. The impacted element is the function RANConfiguration of the file ngap/handler.go. The manipulation results in null pointer dereference. The attack may be launched remotely. The exploit has been released to the public and may be used for attacks. Upgrading to version 2.2.0 is sufficient to resolve this issue. Upgrading the affected component is recommended. The same pull request fixes multiple security issues.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
7 references
| URL | Tags |
|---|---|
| https://vuldb.com/vuln/364405 | vdb-entrytechnical-description |
| https://vuldb.com/vuln/364405/cti | signaturepermissions-required |
| https://vuldb.com/submit/811653 | third-party-advisory |
| https://github.com/omec-project/amf/issues/673 | exploitissue-tracking |
| https://github.com/omec-project/amf/pull/666 | issue-trackingpatch |
| https://github.com/omec-project/amf/releases/tag/v2.2.0 | patch |
| https://github.com/omec-project/amf/ | product |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| omec-project | amf |
Affected:
2.1.3-dev
Unaffected: 2.2.0 cpe:2.3:a:omec-project:amf:*:*:*:*:*:*:*:* |
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CVE-2026-8723 (GCVE-0-2026-8723)
Vulnerability from cvelistv5 – Published: 2026-05-16 23:21 – Updated: 2026-05-18 14:02
VLAI
EPSS
VEX
Title
qs.stringify crashes on null/undefined entries in comma-format arrays under encodeValuesOnly
Summary
### Summary
`qs.stringify` throws `TypeError` when called with `arrayFormat: 'comma'` and `encodeValuesOnly: true` on an array containing `null` or `undefined`. The throw is synchronous and not handled by any of qs's null-related options (`skipNulls`, `strictNullHandling`).
### Details
In the comma + `encodeValuesOnly` branch, `lib/stringify.js:145` mapped the array through the raw encoder before joining:
```js
obj = utils.maybeMap(obj, encoder);
```
`utils.encode` (`lib/utils.js:195`) reads `str.length` with no null guard, so a `null` or `undefined` element throws `TypeError`. `skipNulls` and `strictNullHandling` are both checked in the per-element loop below this line and never get a chance to run.
Same class of bug as the filter-array path fixed in 0c180a4. The vulnerable shape of the comma + `encodeValuesOnly` branch was introduced in 4c4b23d ("encode comma values more consistently", PR #463, 2023-01-19), first released in v6.11.1.
#### PoC
```js
const qs = require('qs');
qs.stringify({ a: [null, 'b'] }, { arrayFormat: 'comma', encodeValuesOnly: true });
qs.stringify({ a: [undefined, 'b'] }, { arrayFormat: 'comma', encodeValuesOnly: true });
qs.stringify({ a: [null] }, { arrayFormat: 'comma', encodeValuesOnly: true });
// TypeError: Cannot read properties of null (reading 'length')
// at encode (lib/utils.js:195:13)
// at Object.maybeMap (lib/utils.js:322:37)
// at stringify (lib/stringify.js:145:25)
```
#### Fix
`lib/stringify.js:145`, applied in 21f80b3 on `main` and released as v6.15.2:
```diff
- obj = utils.maybeMap(obj, encoder);
+ obj = utils.maybeMap(obj, function (v) {
+ return v == null ? v : encoder(v);
+ });
```
`null` and `undefined` now pass through `maybeMap` unchanged and reach the `join(',')` step as-is. For `{ a: [null, 'b'] }` this produces `a=,b`, matching the non-`encodeValuesOnly` comma path (which already joins before encoding and produces `a=%2Cb` for the same input). Single-element `[null]` arrays still collapse via the existing `obj.join(',') || null` and remain subject to `skipNulls` / `strictNullHandling` in the main loop.
### Affected versions
`>=6.11.1 <6.15.2` — fixed in v6.15.2.
The vulnerable code shape was introduced in 4c4b23d and first shipped in v6.11.1. Earlier versions — including all of 6.7.x, 6.8.x, 6.9.x, 6.10.x, and 6.11.0 — implemented the comma + `encodeValuesOnly` path differently (joining before encoding) and are not affected. Empirically verified across released versions.
### Impact
Application code that calls `qs.stringify` with both `arrayFormat: 'comma'` and `encodeValuesOnly: true` (both non-default) on input that may contain a `null` or `undefined` array element will throw synchronously instead of producing a query string. In a typical Node.js HTTP framework (Express, Fastify, Koa, hapi) the sync throw is caught by the framework's error boundary and the affected request returns a 500; the worker process does not exit and subsequent requests are unaffected. The "kills the worker process" framing applies only to call sites outside a request-handler error boundary (background jobs, startup paths, stream pipelines) or to deployments with framework error handling explicitly disabled.
The vulnerable input is a `null` or `undefined` entry inside an array; this is reachable from JSON request bodies or from application code constructing arrays from user input, but not from standard HTML form submissions (which produce strings or omitted fields, not literal `null`).
Severity
5.3 (Medium)
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-476 - NULL Pointer Dereference
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/ljharb/qs/security/advisories/… | vendor-advisory |
| https://github.com/ljharb/qs/commit/21f80b33e5c8b… | patch |
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"vendor": "ljharb",
"versions": [
{
"lessThan": "6.15.2",
"status": "affected",
"version": "6.11.1",
"versionType": "semver"
}
]
}
],
"credits": [
{
"lang": "en",
"type": "reporter",
"value": "joannalange"
}
],
"descriptions": [
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"value": "\u003cp\u003e### Summary\u003c/p\u003e\u003cp\u003e`qs.stringify` throws `TypeError` when called with `arrayFormat: \u0027comma\u0027` and `encodeValuesOnly: true` on an array containing `null` or `undefined`. The throw is synchronous and not handled by any of qs\u0027s null-related options (`skipNulls`, `strictNullHandling`).\u003c/p\u003e\u003cp\u003e### Details\u003c/p\u003e\u003cp\u003eIn the comma + `encodeValuesOnly` branch, `lib/stringify.js:145` mapped the array through the raw encoder before joining:\u003c/p\u003e\u003cp\u003e```js\u003c/p\u003e\u003cp\u003eobj = utils.maybeMap(obj, encoder);\u003c/p\u003e\u003cp\u003e```\u003c/p\u003e\u003cp\u003e`utils.encode` (`lib/utils.js:195`) reads `str.length` with no null guard, so a `null` or `undefined` element throws `TypeError`. `skipNulls` and `strictNullHandling` are both checked in the per-element loop below this line and never get a chance to run.\u003c/p\u003e\u003cp\u003eSame class of bug as the filter-array path fixed in 0c180a4. The vulnerable shape of the comma + `encodeValuesOnly` branch was introduced in 4c4b23d (\"encode comma values more consistently\", PR #463, 2023-01-19), first released in v6.11.1.\u003c/p\u003e\u003cp\u003e#### PoC\u003c/p\u003e\u003cp\u003e```js\u003c/p\u003e\u003cp\u003econst qs = require(\u0027qs\u0027);\u003c/p\u003e\u003cp\u003eqs.stringify({ a: [null, \u0027b\u0027] }, { arrayFormat: \u0027comma\u0027, encodeValuesOnly: true });\u003c/p\u003e\u003cp\u003eqs.stringify({ a: [undefined, \u0027b\u0027] }, { arrayFormat: \u0027comma\u0027, encodeValuesOnly: true });\u003c/p\u003e\u003cp\u003eqs.stringify({ a: [null] }, { arrayFormat: \u0027comma\u0027, encodeValuesOnly: true });\u003c/p\u003e\u003cp\u003e// TypeError: Cannot read properties of null (reading \u0027length\u0027)\u003c/p\u003e\u003cp\u003e// at encode (lib/utils.js:195:13)\u003c/p\u003e\u003cp\u003e// at Object.maybeMap (lib/utils.js:322:37)\u003c/p\u003e\u003cp\u003e// at stringify (lib/stringify.js:145:25)\u003c/p\u003e\u003cp\u003e```\u003c/p\u003e\u003cp\u003e#### Fix\u003c/p\u003e\u003cp\u003e`lib/stringify.js:145`, applied in 21f80b3 on `main` and released as v6.15.2:\u003c/p\u003e\u003cp\u003e```diff\u003c/p\u003e\u003cp\u003e- obj = utils.maybeMap(obj, encoder);\u003c/p\u003e\u003cp\u003e+ obj = utils.maybeMap(obj, function (v) {\u003c/p\u003e\u003cp\u003e+ return v == null ? v : encoder(v);\u003c/p\u003e\u003cp\u003e+ });\u003c/p\u003e\u003cp\u003e```\u003c/p\u003e\u003cp\u003e`null` and `undefined` now pass through `maybeMap` unchanged and reach the `join(\u0027,\u0027)` step as-is. For `{ a: [null, \u0027b\u0027] }` this produces `a=,b`, matching the non-`encodeValuesOnly` comma path (which already joins before encoding and produces `a=%2Cb` for the same input). Single-element `[null]` arrays still collapse via the existing `obj.join(\u0027,\u0027) || null` and remain subject to `skipNulls` / `strictNullHandling` in the main loop.\u003c/p\u003e\u003cp\u003e### Affected versions\u003c/p\u003e\u003cp\u003e`\u0026gt;=6.11.1 \u0026lt;6.15.2` \u2014 fixed in v6.15.2.\u003c/p\u003e\u003cp\u003eThe vulnerable code shape was introduced in 4c4b23d and first shipped in v6.11.1. Earlier versions \u2014 including all of 6.7.x, 6.8.x, 6.9.x, 6.10.x, and 6.11.0 \u2014 implemented the comma + `encodeValuesOnly` path differently (joining before encoding) and are not affected. Empirically verified across released versions.\u003c/p\u003e\u003cp\u003e### Impact\u003c/p\u003e\u003cp\u003eApplication code that calls `qs.stringify` with both `arrayFormat: \u0027comma\u0027` and `encodeValuesOnly: true` (both non-default) on input that may contain a `null` or `undefined` array element will throw synchronously instead of producing a query string. In a typical Node.js HTTP framework (Express, Fastify, Koa, hapi) the sync throw is caught by the framework\u0027s error boundary and the affected request returns a 500; the worker process does not exit and subsequent requests are unaffected. The \"kills the worker process\" framing applies only to call sites outside a request-handler error boundary (background jobs, startup paths, stream pipelines) or to deployments with framework error handling explicitly disabled.\u003c/p\u003e\u003cp\u003eThe vulnerable input is a `null` or `undefined` entry inside an array; this is reachable from JSON request bodies or from application code constructing arrays from user input, but not from standard HTML form submissions (which produce strings or omitted fields, not literal `null`).\u003c/p\u003e"
}
],
"value": "### Summary\n\n\n\n`qs.stringify` throws `TypeError` when called with `arrayFormat: \u0027comma\u0027` and `encodeValuesOnly: true` on an array containing `null` or `undefined`. The throw is synchronous and not handled by any of qs\u0027s null-related options (`skipNulls`, `strictNullHandling`).\n\n\n\n### Details\n\n\n\nIn the comma + `encodeValuesOnly` branch, `lib/stringify.js:145` mapped the array through the raw encoder before joining:\n\n\n\n```js\n\n\n\nobj = utils.maybeMap(obj, encoder);\n\n\n\n```\n\n\n\n`utils.encode` (`lib/utils.js:195`) reads `str.length` with no null guard, so a `null` or `undefined` element throws `TypeError`. `skipNulls` and `strictNullHandling` are both checked in the per-element loop below this line and never get a chance to run.\n\n\n\nSame class of bug as the filter-array path fixed in 0c180a4. The vulnerable shape of the comma + `encodeValuesOnly` branch was introduced in 4c4b23d (\"encode comma values more consistently\", PR #463, 2023-01-19), first released in v6.11.1.\n\n\n\n#### PoC\n\n\n\n```js\n\n\n\nconst qs = require(\u0027qs\u0027);\n\n\n\nqs.stringify({ a: [null, \u0027b\u0027] }, { arrayFormat: \u0027comma\u0027, encodeValuesOnly: true });\n\n\n\nqs.stringify({ a: [undefined, \u0027b\u0027] }, { arrayFormat: \u0027comma\u0027, encodeValuesOnly: true });\n\n\n\nqs.stringify({ a: [null] }, { arrayFormat: \u0027comma\u0027, encodeValuesOnly: true });\n\n\n\n// TypeError: Cannot read properties of null (reading \u0027length\u0027)\n\n\n\n// at encode (lib/utils.js:195:13)\n\n\n\n// at Object.maybeMap (lib/utils.js:322:37)\n\n\n\n// at stringify (lib/stringify.js:145:25)\n\n\n\n```\n\n\n\n#### Fix\n\n\n\n`lib/stringify.js:145`, applied in 21f80b3 on `main` and released as v6.15.2:\n\n\n\n```diff\n\n\n\n- obj = utils.maybeMap(obj, encoder);\n\n\n\n+ obj = utils.maybeMap(obj, function (v) {\n\n\n\n+ return v == null ? v : encoder(v);\n\n\n\n+ });\n\n\n\n```\n\n\n\n`null` and `undefined` now pass through `maybeMap` unchanged and reach the `join(\u0027,\u0027)` step as-is. For `{ a: [null, \u0027b\u0027] }` this produces `a=,b`, matching the non-`encodeValuesOnly` comma path (which already joins before encoding and produces `a=%2Cb` for the same input). Single-element `[null]` arrays still collapse via the existing `obj.join(\u0027,\u0027) || null` and remain subject to `skipNulls` / `strictNullHandling` in the main loop.\n\n\n\n### Affected versions\n\n\n\n`\u003e=6.11.1 \u003c6.15.2` \u2014 fixed in v6.15.2.\n\n\n\nThe vulnerable code shape was introduced in 4c4b23d and first shipped in v6.11.1. Earlier versions \u2014 including all of 6.7.x, 6.8.x, 6.9.x, 6.10.x, and 6.11.0 \u2014 implemented the comma + `encodeValuesOnly` path differently (joining before encoding) and are not affected. Empirically verified across released versions.\n\n\n\n### Impact\n\n\n\nApplication code that calls `qs.stringify` with both `arrayFormat: \u0027comma\u0027` and `encodeValuesOnly: true` (both non-default) on input that may contain a `null` or `undefined` array element will throw synchronously instead of producing a query string. In a typical Node.js HTTP framework (Express, Fastify, Koa, hapi) the sync throw is caught by the framework\u0027s error boundary and the affected request returns a 500; the worker process does not exit and subsequent requests are unaffected. The \"kills the worker process\" framing applies only to call sites outside a request-handler error boundary (background jobs, startup paths, stream pipelines) or to deployments with framework error handling explicitly disabled.\n\n\n\nThe vulnerable input is a `null` or `undefined` entry inside an array; this is reachable from JSON request bodies or from application code constructing arrays from user input, but not from standard HTML form submissions (which produce strings or omitted fields, not literal `null`)."
}
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"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
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"Automatable": "NOT_DEFINED",
"Recovery": "NOT_DEFINED",
"Safety": "NOT_DEFINED",
"attackComplexity": "LOW",
"attackRequirements": "PRESENT",
"attackVector": "NETWORK",
"baseScore": 6.3,
"baseSeverity": "MEDIUM",
"exploitMaturity": "NOT_DEFINED",
"privilegesRequired": "NONE",
"providerUrgency": "NOT_DEFINED",
"subAvailabilityImpact": "NONE",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"userInteraction": "NONE",
"valueDensity": "NOT_DEFINED",
"vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N",
"version": "4.0",
"vulnAvailabilityImpact": "LOW",
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"vulnerabilityResponseEffort": "NOT_DEFINED"
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"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-476",
"description": "CWE-476 NULL Pointer Dereference",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-05-16T23:21:16.035Z",
"orgId": "7ffcee3d-2c14-4c3e-b844-86c6a321a158",
"shortName": "harborist"
},
"references": [
{
"tags": [
"vendor-advisory"
],
"url": "https://github.com/ljharb/qs/security/advisories/GHSA-q8mj-m7cp-5q26"
},
{
"tags": [
"patch"
],
"url": "https://github.com/ljharb/qs/commit/21f80b33e5c8b3f7eba1034fff0da4a4a37a1d41"
}
],
"source": {
"discovery": "EXTERNAL"
},
"title": "qs.stringify crashes on null/undefined entries in comma-format arrays under encodeValuesOnly"
}
},
"cveMetadata": {
"assignerOrgId": "7ffcee3d-2c14-4c3e-b844-86c6a321a158",
"assignerShortName": "harborist",
"cveId": "CVE-2026-8723",
"datePublished": "2026-05-16T23:21:16.035Z",
"dateReserved": "2026-05-16T06:26:43.607Z",
"dateUpdated": "2026-05-18T14:02:57.825Z",
"state": "PUBLISHED"
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Mitigation MIT-56
Implementation
For any pointers that could have been modified or provided from a function that can return NULL, check the pointer for NULL before use. When working with a multithreaded or otherwise asynchronous environment, ensure that proper locking APIs are used to lock before the check, and unlock when it has finished [REF-1484].
Mitigation
Requirements
Select a programming language that is not susceptible to these issues.
Mitigation
Implementation
Check the results of all functions that return a value and verify that the value is non-null before acting upon it.
Mitigation
Architecture and Design
Identify all variables and data stores that receive information from external sources, and apply input validation to make sure that they are only initialized to expected values.
Mitigation
Implementation
Explicitly initialize all variables and other data stores, either during declaration or just before the first usage.
No CAPEC attack patterns related to this CWE.