Common Weakness Enumeration

CWE-140

Weakness Allowed

Improper Neutralization of Delimiters

Abstraction: Base · Status: Draft

The product does not neutralize or incorrectly neutralizes delimiters.

Mapping guidance

This CWE entry is at the Base level of abstraction, which is a preferred level of abstraction for mapping to the root causes of vulnerabilities.

Carefully read both the name and description to ensure that this mapping is an appropriate fit. Do not try to 'force' a mapping to a lower-level Base/Variant simply to comply with this preferred level of abstraction.

Relationships and members

ChildOf: CWE-138 · View CWE-1000

Modes of introduction

Implementation

Content history

Submission: PLOVER · 2006-07-19 · CWE Draft 3

Modification: Eric Dalci · Cigital · 2008-07-01 · CWE 1.0

updated Potential_Mitigations, Time_of_Introduction

Modification: CWE Content Team · MITRE · 2008-09-08 · CWE 1.0

updated Relationships, Taxonomy_Mappings

Modification: CWE Content Team · MITRE · 2009-07-27 · CWE 1.5

updated Potential_Mitigations

Modification: CWE Content Team · MITRE · 2010-06-21 · CWE 1.9

updated Description, Name

Modification: CWE Content Team · MITRE · 2011-03-29 · CWE 1.12

updated Potential_Mitigations

Modification: CWE Content Team · MITRE · 2011-06-01 · CWE 1.13

updated Common_Consequences

Modification: CWE Content Team · MITRE · 2011-06-27 · CWE 2.0

updated Common_Consequences

Modification: CWE Content Team · MITRE · 2012-05-11 · CWE 2.2

updated Relationships

Modification: CWE Content Team · MITRE · 2012-10-30 · CWE 2.3

updated Potential_Mitigations

Modification: CWE Content Team · MITRE · 2013-02-21 · CWE 2.4

updated Potential_Mitigations

Modification: CWE Content Team · MITRE · 2014-07-30 · CWE 2.8

updated Relationships, Taxonomy_Mappings

Modification: CWE Content Team · MITRE · 2017-05-03 · CWE 2.11

updated Potential_Mitigations

Modification: CWE Content Team · MITRE · 2020-02-24 · CWE 4.0

updated Potential_Mitigations, Relationships

Modification: CWE Content Team · MITRE · 2020-06-25 · CWE 4.1

updated Potential_Mitigations

Modification: CWE Content Team · MITRE · 2023-01-31 · CWE 4.10

updated Description, Potential_Mitigations

Modification: CWE Content Team · MITRE · 2023-04-27 · CWE 4.11

updated Relationships

Modification: CWE Content Team · MITRE · 2023-06-29 · CWE 4.12

updated Mapping_Notes

Modification: CWE Content Team · MITRE · 2023-10-26 · CWE 4.13

updated Observed_Examples

Modification: CWE Content Team · MITRE · 2025-12-11 · CWE 4.19

updated Applicable_Platforms, Weakness_Ordinalities

43 vulnerabilities reference this CWE, most recent first.

CVE-2026-124028 (GCVE-0-2026-124028)

Vulnerability from cvelistv5 – Published: 2026-11-06 19:14 – Updated: 2026-11-06 19:14

Title

mistral.rs before 0.9.5 Tool Call Injection via mistralrs-core Output Parsers

Summary

mistral.rs before 0.9.5 contains a delimiter injection vulnerability in mistralrs-core that allows attackers to inject tool calls by placing delimiter strings in text the model quotes. Attackers controlling documents, web pages or tool outputs can embed tags like </tool_call> to make qwen-xml, gemma4 or reasoning parsers return extra calls to declared tools with attacker-chosen arguments.

Severity

2.3 (Low)


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

4.2 (Medium)


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

CWE

CWE-140 - Improper Neutralization of Delimiters

Assigner

VulnCheck CNA under the mitre root

CNA scorecard B 84/100 over 7605 records in the last 180 days details

References

6 references

URL	Tags
https://github.com/EricLBuehler/mistral.rs/commit…	patch
https://github.com/EricLBuehler/mistral.rs	product
https://github.com/EricLBuehler/mistral.rs/securi…	vendor-advisory
https://github.com/EricLBuehler/mistral.rs/pull/2455	issue-trackingpatch
https://github.com/EricLBuehler/mistral.rs/releas…	release-notes
https://www.vulncheck.com/advisories/mistral-rs-b…	third-party-advisory

Impacted products

1 product

Vendor	Product	Version
EricLBuehler	mistral.rs	Affected: 0 , < 0.9.5 (semver)

Date Public

2026-09-25 00:00

Credits

Taehun Kim Youngjoo Shin Eric Buehler

Show details on NVD website

JSON

To clipboard

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CVE-2026-114713 (GCVE-0-2026-114713)

Vulnerability from cvelistv5 – Published: 2026-11-08 02:31 – Updated: 2026-11-08 11:04

Summary

The labeled-response module in UnrealIRCd 6.0.0 before 6.2.7.1 does not escape the IRCv3 "label" message tag when echoing it into replies, which allows any user on a network with two or more linked servers to inject server-to-server commands that are executed with server authority.

Severity

8.6 (High)


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

CWE

CWE-140 - Improper Neutralization of Delimiters

Assigner

mitre CNA under the mitre root

CNA scorecard E 29/100 over 2175 records in the last 180 days details

References

4 references

URL	Tags
https://www.unrealircd.org/
https://www.unrealircd.org/index/news
https://forums.unrealircd.org/viewtopic.php?t=9487
http://www.openwall.com/lists/oss-security/2026/11/08/1

Impacted products

1 product

Vendor	Product	Version
UnrealIRCd	UnrealIRCd	Affected: 0 , < 6.2.7.1 (custom) cpe:2.3:a:unrealircd:unrealircd::::::::

Show details on NVD website

JSON

To clipboard

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CVE-2026-104047 (GCVE-0-2026-104047)

Vulnerability from cvelistv5 – Published: 2026-10-06 19:34 – Updated: 2026-11-05 15:53

Title

Sssd: sssd: information disclosure via query injection in entra id lookups

Summary

A flaw was found in SSSD. When configured to use Microsoft Entra ID, search inputs are not properly sanitized before being incorporated into directory query filters. A local user can exploit this vulnerability by submitting a crafted lookup request, manipulating the query logic to cause unauthorized information disclosure from the directory.

Severity

5.3 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-10-06 19:46 UTC

CWE

CWE-140 - Improper Neutralization of Delimiters

Assigner

redhat CNA under the redhat root

CNA scorecard B 82/100 over 1131 records in the last 180 days details

References

2 references

URL	Tags
https://access.redhat.com/security/cve/CVE-2026-104047	vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2478616	issue-trackingx_refsource_REDHAT

Impacted products

7 products

Vendor	Product	Version
Red Hat	Red Hat Enterprise Linux 10	cpe:/a:redhat:enterprise_linux:10
Red Hat	Red Hat Enterprise Linux 6	cpe:/o:redhat:rhel_els:6
Red Hat	Red Hat Enterprise Linux 7	cpe:/o:redhat:rhel_els:7
Red Hat	Red Hat Enterprise Linux 8	cpe:/a:redhat:enterprise_linux:8
Red Hat	Red Hat Enterprise Linux 9	cpe:/a:redhat:enterprise_linux:9
Red Hat	Red Hat OpenShift Container Platform 4	cpe:/a:redhat:openshift:4
Red Hat	Red Hat OpenShift Container Platform 5	cpe:/a:redhat:openshift:5

Date Public

2026-10-06 15:36

Credits

This issue was discovered by Found by AISLE in partnership with Red Hat.

Show details on NVD website

JSON

To clipboard

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CVE-2026-104040 (GCVE-0-2026-104040)

Vulnerability from cvelistv5 – Published: 2026-10-06 01:00 – Updated: 2026-11-06 15:41

Red Hat Product Security has been notified that this CVE is a duplicated of CVE-2026-104047

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CVE-2026-33457 (GCVE-0-2026-33457)

Vulnerability from cvelistv5 – Published: 2026-04-10 08:31 – Updated: 2026-04-14 13:29

Title

Potential livestatus injection in prediction graph page

Summary

Livestatus injection in the prediction graph page in Checkmk <2.5.0b4, <2.4.0p26, and <2.3.0p47 allows an authenticated user to inject arbitrary Livestatus commands via a crafted service name parameter due to insufficient sanitization of the service description value.

Severity

5.3 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-04-14 03:55 UTC

CWE

CWE-140 - Improper Neutralization of Delimiters

Assigner

Checkmk CNA under the mitre root

CNA scorecard A 92/100 over 23 records in the last 180 days details

References

1 reference

URL	Tags
https://checkmk.com/werk/17990	vendor-advisory

Impacted products

1 product

Vendor	Product	Version
Checkmk GmbH	Checkmk	Affected: 2.5.0 , < 2.5.0b4 (semver) Affected: 2.4.0 , < 2.4.0p26 (semver) Affected: 2.3.0 , < 2.3.0p47 (semver) cpe:2.3:a:checkmk:checkmk:::::::: cpe:2.3:a:checkmk:checkmk:::::::: cpe:2.3:a:checkmk:checkmk::::::::

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CVE-2026-33456 (GCVE-0-2026-33456)

Vulnerability from cvelistv5 – Published: 2026-04-10 08:31 – Updated: 2026-04-14 13:29

Title

Potential livestatus injection in notification test

Summary

Livestatus injection in the notification test mode in Checkmk <2.5.0b4 and <2.4.0p26 allows an authenticated user with access to the notification test page to inject arbitrary Livestatus commands via a crafted service description.

Severity

5.1 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-04-14 03:55 UTC

CWE

CWE-140 - Improper Neutralization of Delimiters

Assigner

Checkmk CNA under the mitre root

CNA scorecard A 92/100 over 23 records in the last 180 days details

References

1 reference

URL	Tags
https://checkmk.com/werk/17989	vendor-advisory

Impacted products

1 product

Vendor	Product	Version
Checkmk GmbH	Checkmk	Affected: 2.5.0 , < 2.5.0b4 (semver) Affected: 2.4.0 , < 2.4.0p26 (semver) cpe:2.3:a:checkmk:checkmk:::::::: cpe:2.3:a:checkmk:checkmk::::::::

Show details on NVD website

JSON

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CVE-2026-33455 (GCVE-0-2026-33455)

Vulnerability from cvelistv5 – Published: 2026-04-10 08:30 – Updated: 2026-04-14 13:30

Title

Livestatus injection in monitoring quicksearch

Summary

Livestatus injection in the monitoring quicksearch in Checkmk <2.5.0b4 allows an authenticated attacker to inject livestatus commands via the search query due to insufficient input sanitization in search filter plugins.

Severity

5.3 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-04-14 03:55 UTC

CWE

CWE-140 - Improper Neutralization of Delimiters

Assigner

Checkmk CNA under the mitre root

CNA scorecard A 92/100 over 23 records in the last 180 days details

References

1 reference

URL	Tags
https://checkmk.com/werk/17988	vendor-advisory

Impacted products

1 product

Vendor	Product	Version
Checkmk GmbH	Checkmk	Affected: 2.5.0 , < 2.5.0b4 (semver) cpe:2.3:a:checkmk:checkmk::::::::

Show details on NVD website

JSON

To clipboard

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CVE-2026-21691 (GCVE-0-2026-21691)

Vulnerability from cvelistv5 – Published: 2026-01-07 21:53 – Updated: 2026-01-08 14:40

Title

iccDEV has Type Confusion in CIccTag:IsTypeCompressed()

Summary

iccDEV provides a set of libraries and tools that allow for the interaction, manipulation, and application of International Color Consortium (ICC) color management profiles. Versions prior to 2.3.1.2 have a Type Confusion vulnerability in `CIccTag:IsTypeCompressed()`. This vulnerability affects users of the iccDEV library who process ICC color profiles. Version 2.3.1.2 contains a patch. No known workarounds are available.

Severity

5.4 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-01-08 14:39 UTC

CWE

CWE-20 - Improper Input Validation
CWE-140 - Improper Neutralization of Delimiters
CWE-476 - NULL Pointer Dereference
CWE-697 - Incorrect Comparison
CWE-1025 - Comparison Using Wrong Factors

Assigner

GitHub_M CNA under the mitre root

CNA scorecard C 72/100 over 7895 records in the last 180 days details

References

3 references

URL	Tags
https://github.com/InternationalColorConsortium/i…	x_refsource_CONFIRM
https://github.com/InternationalColorConsortium/i…	x_refsource_MISC
https://github.com/InternationalColorConsortium/i…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
InternationalColorConsortium	iccDEV	Affected: < 2.3.1.2

Show details on NVD website

JSON

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CVE-2025-52989 (GCVE-0-2025-52989)

Vulnerability from cvelistv5 – Published: 2025-07-11 15:10 – Updated: 2025-09-24 08:03

Title

Junos OS and Junos OS Evolved: Annotate configuration command can be used to change the configuration

Summary

An Improper Neutralization of Delimiters vulnerability in the UI of Juniper Networks Junos OS and Junos OS Evolved allows a local, authenticated attacker with high privileges to modify the system configuration. A user with limited configuration and commit permissions, using a specifically crafted annotate configuration command, can change any part of the device configuration. This issue affects: Junos OS: * all versions before 22.2R3-S7, * 22.4 versions before 22.4R3-S7, * 23.2 versions before 23.2R2-S4, * 23.4 versions before 23.4R2-S4, * 24.2 versions before 24.2R2-S1, * 24.4 versions before 24.4R1-S2, 24.4R2; Junos OS Evolved: * all versions before 22.4R3-S7-EVO, * 23.2-EVO versions before 23.2R2-S4-EVO, * 23.4-EVO versions before 23.4R2-S5-EVO, * 24.2-EVO versions before 24.2R2-S1-EVO * 24.4-EVO versions before 24.4R2-EVO.

Severity

5.1 (Medium)


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

6.8 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-07-11 16:04 UTC

CWE

CWE-140 - Improper Neutralization of Delimiters

Assigner

juniper CNA under the mitre root

CNA scorecard B 84/100 over 193 records in the last 180 days details

References

1 reference

URL	Tags
https://supportportal.juniper.net/JSA100096	vendor-advisory

Impacted products

2 products

Vendor	Product	Version
Juniper Networks	Junos OS	Affected: 0 , < 22.2R3-S7 (semver) Affected: 22.4 , < 22.4R3-S7 (semver) Affected: 23.2 , < 23.2R2-S4 (semver) Affected: 23.4 , < 23.4R2-S4 (semver) Affected: 24.2 , < 24.2R2-S1 (semver) Affected: 24.4 , < 24.4R1-S2, 24.4R2 (semver)
Juniper Networks	Junos OS Evolved	Affected: 0 , < 22.4R3-S7-EVO (semver) Affected: 23.2-EVO , < 23.2R2-S4-EVO (semver) Affected: 23.4-EVO , < 23.4R2-S5-EVO (semver) Affected: 24.2-EVO , < 24.2R2-S1-EVO (semver) Affected: 24.4-EVO , < 24.4R2-EVO (semver)

Date Public

2025-07-09 16:00

Credits

Vincent Szurma (vszurma) – Independent IT and Security Consultant

Show details on NVD website

JSON

To clipboard

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CVE-2025-48879 (GCVE-0-2025-48879)

Vulnerability from cvelistv5 – Published: 2025-06-10 15:23 – Updated: 2025-06-10 15:57

Title

OctoPrint Vulnerable to Denial of Service through malformed HTTP request

Summary

OctoPrint versions up until and including 1.11.1 contain a vulnerability that allows any unauthenticated attacker to send a manipulated broken multipart/form-data request to OctoPrint and through that make the web server component become unresponsive. The issue can be triggered by a broken multipart/form-data request lacking an end boundary to any of OctoPrint's endpoints implemented through the octoprint.server.util.tornado.UploadStorageFallbackHandler request handler. The request handler will get stuck in an endless busy loop, looking for a part of the request that will never come. As Tornado is single-threaded, that will effectively block the whole web server. The vulnerability has been patched in version 1.11.2.

Severity

6.5 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-06-10 15:57 UTC

CWE

CWE-140 - Improper Neutralization of Delimiters
CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')

Assigner

GitHub_M CNA under the mitre root

CNA scorecard C 72/100 over 7895 records in the last 180 days details

References

2 references

URL	Tags
https://github.com/OctoPrint/OctoPrint/security/a…	x_refsource_CONFIRM
https://github.com/OctoPrint/OctoPrint/commit/c9c…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
OctoPrint	OctoPrint	Affected: < 1.11.2

Show details on NVD website

JSON

To clipboard

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        },
        {
          "name": "https://github.com/OctoPrint/OctoPrint/commit/c9c35c17bd820f19c6b12e6c0359fc0cfdd0c1ec",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/OctoPrint/OctoPrint/commit/c9c35c17bd820f19c6b12e6c0359fc0cfdd0c1ec"
        }
      ],
      "source": {
        "advisory": "GHSA-9wj4-8h85-pgrw",
        "discovery": "UNKNOWN"
      },
      "title": "OctoPrint Vulnerable to Denial of Service through malformed HTTP request"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2025-48879",
    "datePublished": "2025-06-10T15:23:54.150Z",
    "dateReserved": "2025-05-27T20:14:34.296Z",
    "dateUpdated": "2025-06-10T15:57:42.371Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

Mitigation

Implementation

Strategy: Input Validation

Developers should anticipate that delimiters will be injected/removed/manipulated in the input vectors of their product. Use an appropriate combination of denylists and allowlists to ensure only valid, expected and appropriate input is processed by the system.

Mitigation MIT-5

Implementation

Strategy: Input Validation

Assume all input is malicious. Use an "accept known good" input validation strategy, i.e., use a list of acceptable inputs that strictly conform to specifications. Reject any input that does not strictly conform to specifications, or transform it into something that does.
When performing input validation, consider all potentially relevant properties, including length, type of input, the full range of acceptable values, missing or extra inputs, syntax, consistency across related fields, and conformance to business rules. As an example of business rule logic, "boat" may be syntactically valid because it only contains alphanumeric characters, but it is not valid if the input is only expected to contain colors such as "red" or "blue."
Do not rely exclusively on looking for malicious or malformed inputs. This is likely to miss at least one undesirable input, especially if the code's environment changes. This can give attackers enough room to bypass the intended validation. However, denylists can be useful for detecting potential attacks or determining which inputs are so malformed that they should be rejected outright.

Mitigation MIT-28

Implementation

Strategy: Output Encoding

While it is risky to use dynamically-generated query strings, code, or commands that mix control and data together, sometimes it may be unavoidable. Properly quote arguments and escape any special characters within those arguments. The most conservative approach is to escape or filter all characters that do not pass an extremely strict allowlist (such as everything that is not alphanumeric or white space). If some special characters are still needed, such as white space, wrap each argument in quotes after the escaping/filtering step. Be careful of argument injection (CWE-88).

Mitigation MIT-20

Implementation

Strategy: Input Validation

Inputs should be decoded and canonicalized to the application's current internal representation before being validated (CWE-180). Make sure that the application does not decode the same input twice (CWE-174). Such errors could be used to bypass allowlist validation schemes by introducing dangerous inputs after they have been checked.

CAPEC-15: Command Delimiters

An attack of this type exploits a programs' vulnerabilities that allows an attacker's commands to be concatenated onto a legitimate command with the intent of targeting other resources such as the file system or database. The system that uses a filter or denylist input validation, as opposed to allowlist validation is vulnerable to an attacker who predicts delimiters (or combinations of delimiters) not present in the filter or denylist. As with other injection attacks, the attacker uses the command delimiter payload as an entry point to tunnel through the application and activate additional attacks through SQL queries, shell commands, network scanning, and so on.

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