Common Weakness Enumeration

CWE-436

Interpretation Conflict

Product A handles inputs or steps differently than Product B, which causes A to perform incorrect actions based on its perception of B's state.

CVE-2026-53538 (GCVE-0-2026-53538)

Vulnerability from cvelistv5 – Published: 2026-06-22 16:56 – Updated: 2026-06-23 16:08

Title

Python-Multipart: Semicolon treated as querystring field separator enables parameter smuggling

Summary

Python-Multipart is a streaming multipart parser for Python. Prior to 0.0.30, QuerystringParser treated ; as a field separator in application/x-www-form-urlencoded bodies, in addition to &. The WHATWG URL standard, modern browsers, and Python's urllib.parse (since the CVE-2021-23336 fix) treat only & as a separator. This creates a parser differential: the same bytes are tokenized into different fields than a WHATWG compliant intermediary would produce, allowing an attacker to smuggle extra form fields past an upstream body inspecting component. This vulnerability is fixed in 0.0.30.

Severity

3.7 (Low)


                        
                          CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

CWE-436 - Interpretation Conflict
CWE-444 - Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')

Assigner

GitHub_M

References

1 reference

URL	Tags
https://github.com/Kludex/python-multipart/securi…	x_refsource_CONFIRM

Impacted products

1 product

Vendor	Product	Version
Kludex	python-multipart	Affected: < 0.0.30

Show details on NVD website

JSON

To clipboard

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CVE-2026-53655 (GCVE-0-2026-53655)

Vulnerability from cvelistv5 – Published: 2026-06-22 14:55 – Updated: 2026-06-23 16:09

Title

node-tar applies PAX size override to intermediary GNU long-name/long-link headers, causing tar parser interpretation differential (file smuggling)

Summary

node-tar is a full-featured Tar for Node.js. Prior to 7.5.16, tar (node-tar) applies a PAX extended header's size= record (and other PAX overrides) to the next header entry of any type, including intermediary metadata headers such as a GNU long-name (L) or long-link (K) entry. Per POSIX pax, a PAX extended header (x) describes the next file entry, not the intermediary extension headers that may sit between the x header and the file it annotates. Because node-tar lets the PAX size override the byte length of an intervening L/K/x header, an attacker can desynchronize node-tar's stream cursor relative to every other mainstream tar implementation (GNU tar, libarchive/bsdtar, Python tarfile, and the now-fixed tar-rs / astral-tokio-tar). The result is a tar parser interpretation differential (CWE-436): a single crafted archive yields a different set of members under node-tar than under the reference tar tools. An attacker can use this to hide a member from one parser while it is visible to another, which defeats security tooling whose scanner and extractor disagree on archive contents (e.g. a malware/secret scanner that lists entries with one library while a downstream step extracts with another) This vulnerability is fixed in 7.5.16.

Severity

6.9 (Medium)


                        
                          CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N

SSVC

Exploitation: poc Automatable: no Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

CWE-436 - Interpretation Conflict

Assigner

GitHub_M

References

1 reference

URL	Tags
https://github.com/isaacs/node-tar/security/advis…	x_refsource_CONFIRM

Impacted products

1 product

Vendor	Product	Version
isaacs	node-tar	Affected: < 7.5.16

Show details on NVD website

JSON

To clipboard

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CVE-2026-6270 (GCVE-0-2026-6270)

Vulnerability from cvelistv5 – Published: 2026-04-16 13:44 – Updated: 2026-04-16 14:24

Title

@fastify/middie vulnerable to middleware authentication bypass in child plugin scopes

Summary

@fastify/middie versions 9.3.1 and earlier do not register inherited middleware directly on child plugin engine instances. When a Fastify application registers authentication middleware in a parent scope and then registers child plugins with @fastify/middie, the child scope does not inherit the parent middleware. This allows unauthenticated requests to reach routes defined in child plugin scopes, bypassing authentication and authorization checks. Upgrade to @fastify/middie 9.3.2 to fix this issue. There are no workarounds.

Severity

9.1 (Critical)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

SSVC

Exploitation: poc Automatable: no Technical Impact: total

CISA Coordinator (v2.0.3)

CWE

CWE-436 - Interpretation Conflict

Assigner

openjs

References

3 references

URL	Tags
https://github.com/fastify/fastify-express/securi…
https://github.com/fastify/middie/security/adviso…
https://cna.openjsf.org/security-advisories.html

Impacted products

1 product

Vendor	Product	Version
@fastify/middie	@fastify/middie	Affected: 0 , < 9.3.2 (semver) Unaffected: 9.3.2 (semver)

Credits

FredKSchott climba03003 UlisesGascon

Show details on NVD website

JSON

To clipboard

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CVE-2026-6322 (GCVE-0-2026-6322)

Vulnerability from cvelistv5 – Published: 2026-05-05 10:29 – Updated: 2026-07-03 12:05

Title

fast-uri vulnerable to host confusion via percent-encoded authority delimiters

Summary

fast-uri normalize() decoded percent-encoded authority delimiters inside the host component and then re-emitted them as raw delimiters during serialization. A host that combined an allowed domain, an encoded at-sign, and a different domain was re-emitted with the at-sign as a raw userinfo separator, changing the URI's authority to the second domain. Applications that normalize untrusted URLs before host allowlist checks, redirect validation, or outbound request routing can be steered to a different authority than the input appeared to specify. Versions <= 3.1.1 are affected. Update to 3.1.2 or later.

Severity

7.5 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

CWE-436 - Interpretation Conflict
CWE-140 - Improper Neutralization of Delimiters

Assigner

openjs

References

20 references

URL	Tags
https://github.com/fastify/fast-uri/security/advi…
https://cna.openjsf.org/security-advisories.html
https://access.redhat.com/security/cve/CVE-2026-6322	vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2466684	issue-trackingx_refsource_REDHAT
https://security.access.redhat.com/data/csaf/v2/v…	x_sadp-csaf-vex
https://access.redhat.com/errata/RHSA-2026:34160	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:34342	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:25273	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:34374	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:26234	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:29197	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:29800	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:29834	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:29796	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:29795	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:33683	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:30076	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:28571	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:26225	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:25271	vendor-advisoryx_refsource_REDHAT

Impacted products

41 products

Vendor	Product	Version
fast-uri	fast-uri	Affected: 0 , < 3.1.2 (semver) Unaffected: 3.1.2 (semver)
Red Hat	Red Hat Ansible Automation Platform 2.6 for RHEL 9	cpe:/a:redhat:ansible_automation_platform:2.6::el9 cpe:/a:redhat:ansible_automation_platform_developer:2.6::el9
Red Hat	Cluster Observability Operator 1.5.0	cpe:/a:redhat:cluster_observability_operator:1.5::el9
Red Hat	Red Hat Advanced Cluster Management for Kubernetes 2.16	cpe:/a:redhat:acm:2.16::el9
Red Hat	Red Hat Ansible Automation Platform 2.6	cpe:/a:redhat:ansible_automation_platform:2.6::el9
Red Hat	Red Hat Developer Hub 1.9	cpe:/a:redhat:rhdh:1.9::el9
Red Hat	Red Hat Discovery 2	cpe:/a:redhat:discovery:2::el9
Red Hat	Red Hat OpenShift Container Platform 4.20	cpe:/a:redhat:openshift:4.20::el9
Red Hat	Red Hat OpenShift Container Platform 4.21	cpe:/a:redhat:openshift:4.21::el9
Red Hat	Red Hat OpenShift Container Platform 4.22	cpe:/a:redhat:openshift:4.22::el9
Red Hat	Red Hat Quay 3.10	cpe:/a:redhat:quay:3.10::el8
Red Hat	Red Hat Quay 3.12	cpe:/a:redhat:quay:3.12::el8
Red Hat	Red Hat Quay 3.9	cpe:/a:redhat:quay:3.9::el8
Red Hat	Red Hat Satellite 6.18	cpe:/a:redhat:satellite:6.18::el9
Red Hat	multicluster engine for Kubernetes 2.11	cpe:/a:redhat:multicluster_engine:2.11::el9
Red Hat	Confidential Compute Attestation	cpe:/a:redhat:confidential_compute_attestation:1
Red Hat	Migration Toolkit for Applications 8	cpe:/a:redhat:migration_toolkit_applications:8
Red Hat	Migration Toolkit for Containers	cpe:/a:redhat:rhmt:1
Red Hat	Network Observability Operator	cpe:/a:redhat:network_observ_optr:1
Red Hat	OpenShift Lightspeed	cpe:/a:redhat:openshift_lightspeed
Red Hat	OpenShift Pipelines	cpe:/a:redhat:openshift_pipelines:1
Red Hat	OpenShift Serverless	cpe:/a:redhat:serverless:1
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Red Hat	Red Hat Build of Podman Desktop	cpe:/a:redhat:podman_desktop:1
Red Hat	Red Hat Build of Podman Desktop - Tech Preview	cpe:/a:redhat:podman_desktop:0
Red Hat	Red Hat Data Grid 8	cpe:/a:redhat:jboss_data_grid:8
Red Hat	Red Hat Edge Manager 1	cpe:/a:redhat:edge_manager:1
Red Hat	Red Hat Enterprise Linux 10	cpe:/o:redhat:enterprise_linux:10
Red Hat	Red Hat Enterprise Linux 9	cpe:/o:redhat:enterprise_linux:9
Red Hat	Red Hat Enterprise Linux AI (RHEL AI) 3	cpe:/a:redhat:enterprise_linux_ai:3
Red Hat	Red Hat OpenShift AI (RHOAI)	cpe:/a:redhat:openshift_ai
Red Hat	Red Hat OpenShift Container Platform 4	cpe:/a:redhat:openshift:4
Red Hat	Red Hat Openshift Data Foundation 4	cpe:/a:redhat:openshift_data_foundation:4
Red Hat	Red Hat OpenShift Dev Spaces	cpe:/a:redhat:openshift_devspaces:3
Red Hat	Red Hat Quay 3	cpe:/a:redhat:quay:3
Red Hat	Red Hat Satellite 6	cpe:/a:redhat:satellite:6
Red Hat	Self-service automation portal 2	cpe:/a:redhat:ansible_portal:2
Red Hat	Cryostat 4	cpe:/a:redhat:cryostat:4
Red Hat	Red Hat AMQ Broker 7	cpe:/a:redhat:amq_broker:7
Red Hat	Red Hat build of Apache Camel - HawtIO 4	cpe:/a:redhat:apache_camel_hawtio:4
Red Hat	Red Hat OpenShift Virtualization 4	cpe:/a:redhat:container_native_virtualization:4

Credits

Jvr Matteo Collina Ulises Gascón KaKa

Show details on NVD website

JSON

To clipboard

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}

CVE-2026-8034 (GCVE-0-2026-8034)

Vulnerability from cvelistv5 – Published: 2026-05-07 21:18 – Updated: 2026-05-08 13:03

Title

Server-side request forgery vulnerability in GitHub Enterprise Server notebook viewer via URL parser confusion

Summary

A server-side request forgery (SSRF) vulnerability was identified in the GitHub Enterprise Server notebook viewer that allowed an attacker to access internal services by exploiting URL parser confusion between the validation layer and the HTTP request library. The hostname validation used a different URL parser than the request library, enabling a crafted URL to pass validation while directing the request to an unintended host. Exploitation required network access to the GitHub Enterprise Server instance. This vulnerability affected all versions of GitHub Enterprise Server prior to 3.21 and was fixed in versions 3.16.18, 3.17.15, 3.18.9, 3.19.6, and 3.20.2. This vulnerability was reported via the GitHub Bug Bounty program.

Severity

7.9 (High)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:H

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

CWE-918 - Server-Side request forgery (SSRF)
CWE-436 - Interpretation Conflict

Assigner

GitHub_P

References

5 references

URL	Tags
https://docs.github.com/en/enterprise-server@3.16…	release-notes
https://docs.github.com/en/enterprise-server@3.17…	release-notes
https://docs.github.com/en/enterprise-server@3.18…	release-notes
https://docs.github.com/en/enterprise-server@3.19…	release-notes
https://docs.github.com/en/enterprise-server@3.20…	release-notes

Impacted products

1 product

Vendor	Product	Version
GitHub	Enterprise Server	Affected: 3.16.0 , ≤ 3.16.17 (semver) Affected: 3.17.0 , ≤ 3.17.14 (semver) Affected: 3.18.0 , ≤ 3.18.8 (semver) Affected: 3.19.0 , ≤ 3.19.5 (semver) Affected: 3.20.0 , ≤ 3.20.1 (semver) Unaffected: 3.21.0 (semver)

Credits

R31n

Show details on NVD website

JSON

To clipboard

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No mitigation information available for this CWE.

CAPEC-105: HTTP Request Splitting

['An adversary abuses the flexibility and discrepancies in the parsing and interpretation of HTTP Request messages by different intermediary HTTP agents (e.g., load balancer, reverse proxy, web caching proxies, application firewalls, etc.) to split a single HTTP request into multiple unauthorized and malicious HTTP requests to a back-end HTTP agent (e.g., web server).', 'See CanPrecede relationships for possible consequences.']

CAPEC-273: HTTP Response Smuggling

['An adversary manipulates and injects malicious content in the form of secret unauthorized HTTP responses, into a single HTTP response from a vulnerable or compromised back-end HTTP agent (e.g., server).', 'See CanPrecede relationships for possible consequences.']

CAPEC-34: HTTP Response Splitting

['An adversary manipulates and injects malicious content, in the form of secret unauthorized HTTP responses, into a single HTTP response from a vulnerable or compromised back-end HTTP agent (e.g., web server) or into an already spoofed HTTP response from an adversary controlled domain/site.', 'See CanPrecede relationships for possible consequences.']

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