Common Weakness Enumeration
CWE-1333
AllowedInefficient Regular Expression Complexity
Abstraction: Base · Status: Draft
The product uses a regular expression with a worst-case computational complexity that is inefficient and possibly exponential.
724 vulnerabilities reference this CWE, most recent first.
CVE-2025-24026 (GCVE-0-2025-24026)
Vulnerability from cvelistv5 – Published: 2025-05-14 14:59 – Updated: 2025-05-14 15:10
VLAI
EPSS
VEX
Title
iTop Inefficient Regular Expression Complexity vulnerability
Summary
iTop is an web based IT Service Management tool. Versions prior to 3.2.1 are vulnerable to regular expression denial of service (ReDoS) that may, under some circumstances, affect iTop server. Version 3.2.1 doesn't use the affected variable in the regular expression. As a workaround, if iTop app_root_url is defined in the configuration file, then there is no possible way to exploit this ReDoS.
Severity
5.3 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-1333 - Inefficient Regular Expression Complexity
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/Combodo/iTop/security/advisori… | x_refsource_CONFIRM |
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CVE-2025-10990 (GCVE-0-2025-10990)
Vulnerability from cvelistv5 – Published: 2026-02-27 13:32 – Updated: 2026-06-25 23:53
VLAI
EPSS
VEX
Title
Rexml: rexml: denial of service via inefficient regex parsing
Summary
A flaw was found in REXML. A remote attacker could exploit inefficient regular expression (regex) parsing when processing hex numeric character references (&#x...;) in XML documents. This could lead to a Regular Expression Denial of Service (ReDoS), impacting the availability of the affected component. This issue is the result of an incomplete fix for CVE-2024-49761.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-1333 - Inefficient Regular Expression Complexity
Assigner
References
8 references
| URL | Tags |
|---|---|
| https://access.redhat.com/errata/RHSA-2025:17606 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2025:17613 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2025:17693 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/security/cve/CVE-2025-10990 | vdb-entryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2398216 | issue-trackingx_refsource_REDHAT |
| https://github.com/ruby/rexml/commit/ce59f2eb1aeb… | |
| https://github.com/ruby/rexml/security/advisories… | |
| https://www.ruby-lang.org/en/news/2024/10/28/redo… |
Impacted products
6 products
| Vendor | Product | Version | |
|---|---|---|---|
|
Unaffected:
6.17.5
Unaffected: 6.16.5.4 |
|||
| Red Hat | Red Hat Satellite 6.16 for RHEL 8 |
Unaffected:
0:8.8.1-3.el8sat , < *
(rpm)
cpe:/a:redhat:satellite:6.16::el8 cpe:/a:redhat:satellite:6.16::el9 cpe:/a:redhat:satellite_capsule:6.16::el8 cpe:/a:redhat:satellite_capsule:6.16::el9 cpe:/a:redhat:satellite_utils:6.16::el8 cpe:/a:redhat:satellite_utils:6.16::el9 |
|
| Red Hat | Red Hat Satellite 6.16 for RHEL 9 |
Unaffected:
0:8.8.1-3.el9sat , < *
(rpm)
cpe:/a:redhat:satellite:6.16::el8 cpe:/a:redhat:satellite:6.16::el9 cpe:/a:redhat:satellite_capsule:6.16::el8 cpe:/a:redhat:satellite_capsule:6.16::el9 cpe:/a:redhat:satellite_utils:6.16::el8 cpe:/a:redhat:satellite_utils:6.16::el9 |
|
| Red Hat | Red Hat Satellite 6.17 for RHEL 9 |
Unaffected:
0:8.8.1-3.el9sat , < *
(rpm)
cpe:/a:redhat:satellite:6.17::el9 cpe:/a:redhat:satellite_capsule:6.17::el9 cpe:/a:redhat:satellite_utils:6.17::el9 |
|
| Red Hat | Satellite Client 6 for RHEL 8 |
Unaffected:
0:7.34.0-4.el8sat , < *
(rpm)
cpe:/a:redhat:rhel_satellite_client:6::el8 cpe:/a:redhat:rhel_satellite_client:6::el9 |
|
| Red Hat | Satellite Client 6 for RHEL 9 |
Unaffected:
0:7.34.0-4.el9sat , < *
(rpm)
cpe:/a:redhat:rhel_satellite_client:6::el8 cpe:/a:redhat:rhel_satellite_client:6::el9 |
Date Public
2025-09-25 00:00
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CVE-2025-9670 (GCVE-0-2025-9670)
Vulnerability from cvelistv5 – Published: 2025-08-29 19:02 – Updated: 2025-08-29 19:19
VLAI
EPSS
VEX
Title
mixmark-io turndown commonmark-rules.js redos
Summary
A security flaw has been discovered in mixmark-io turndown up to 7.2.1. This affects an unknown function of the file src/commonmark-rules.js. Performing manipulation results in inefficient regular expression complexity. It is possible to initiate the attack remotely. The exploit has been released to the public and may be exploited.
Severity
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://vuldb.com/?id.321880 | vdb-entry |
| https://vuldb.com/?ctiid.321880 | signaturepermissions-required |
| https://vuldb.com/?submit.637911 | third-party-advisory |
| https://github.com/mixmark-io/turndown/issues/501 | issue-tracking |
| https://github.com/mixmark-io/turndown/issues/501… | exploitissue-tracking |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| mixmark-io | turndown |
Affected:
7.2.0
Affected: 7.2.1 |
Credits
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CVE-2025-9308 (GCVE-0-2025-9308)
Vulnerability from cvelistv5 – Published: 2025-08-21 16:02 – Updated: 2025-08-21 17:32 Unsupported When Assigned
VLAI
EPSS
VEX
Title
yarnpkg Yarn request-manager.js setOptions redos
Summary
A vulnerability has been found in yarnpkg Yarn up to 1.22.22. This impacts the function setOptions of the file src/util/request-manager.js. Such manipulation leads to inefficient regular expression complexity. Local access is required to approach this attack. This vulnerability only affects products that are no longer supported by the maintainer.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://vuldb.com/?id.320913 | vdb-entrytechnical-description |
| https://vuldb.com/?ctiid.320913 | signaturepermissions-required |
| https://vuldb.com/?submit.633486 | third-party-advisory |
| https://github.com/yarnpkg/yarn/pull/9203 | issue-tracking |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| yarnpkg | Yarn |
Affected:
1.22.0
Affected: 1.22.1 Affected: 1.22.2 Affected: 1.22.3 Affected: 1.22.4 Affected: 1.22.5 Affected: 1.22.6 Affected: 1.22.7 Affected: 1.22.8 Affected: 1.22.9 Affected: 1.22.10 Affected: 1.22.11 Affected: 1.22.12 Affected: 1.22.13 Affected: 1.22.14 Affected: 1.22.15 Affected: 1.22.16 Affected: 1.22.17 Affected: 1.22.18 Affected: 1.22.19 Affected: 1.22.20 Affected: 1.22.21 Affected: 1.22.22 |
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CVE-2025-8262 (GCVE-0-2025-8262)
Vulnerability from cvelistv5 – Published: 2025-07-28 07:02 – Updated: 2025-07-28 17:16
VLAI
EPSS
VEX
Title
yarnpkg Yarn hosted-git-resolver.js explodeHostedGitFragment redos
Summary
A vulnerability was found in yarnpkg Yarn up to 1.22.22. It has been classified as problematic. Affected is the function explodeHostedGitFragment of the file src/resolvers/exotics/hosted-git-resolver.js. The manipulation leads to inefficient regular expression complexity. It is possible to launch the attack remotely. The patch is identified as 97731871e674bf93bcbf29e9d3258da8685f3076. It is recommended to apply a patch to fix this issue.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://vuldb.com/?id.317850 | vdb-entrytechnical-description |
| https://vuldb.com/?ctiid.317850 | signaturepermissions-required |
| https://vuldb.com/?submit.617393 | third-party-advisory |
| https://github.com/yarnpkg/yarn/pull/9199 | issue-tracking |
| https://github.com/yarnpkg/yarn/pull/9199/commits… | issue-trackingpatch |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| yarnpkg | Yarn |
Affected:
1.22.0
Affected: 1.22.1 Affected: 1.22.2 Affected: 1.22.3 Affected: 1.22.4 Affected: 1.22.5 Affected: 1.22.6 Affected: 1.22.7 Affected: 1.22.8 Affected: 1.22.9 Affected: 1.22.10 Affected: 1.22.11 Affected: 1.22.12 Affected: 1.22.13 Affected: 1.22.14 Affected: 1.22.15 Affected: 1.22.16 Affected: 1.22.17 Affected: 1.22.18 Affected: 1.22.19 Affected: 1.22.20 Affected: 1.22.21 Affected: 1.22.22 |
Credits
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CVE-2025-7579 (GCVE-0-2025-7579)
Vulnerability from cvelistv5 – Published: 2025-07-14 06:14 – Updated: 2025-07-14 13:08
VLAI
EPSS
VEX
Title
chinese-poetry server.js redos
Summary
A vulnerability was found in chinese-poetry 0.1. It has been rated as problematic. This issue affects some unknown processing of the file rank/server.js. The manipulation leads to inefficient regular expression complexity. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://vuldb.com/?id.316277 | vdb-entry |
| https://vuldb.com/?ctiid.316277 | signaturepermissions-required |
| https://vuldb.com/?submit.609704 | third-party-advisory |
| https://github.com/chinese-poetry/chinese-poetry/… | issue-tracking |
| https://github.com/chinese-poetry/chinese-poetry/… | exploitissue-tracking |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| n/a | chinese-poetry |
Affected:
0.1
|
Credits
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CVE-2025-7074 (GCVE-0-2025-7074)
Vulnerability from cvelistv5 – Published: 2025-07-05 09:02 – Updated: 2025-07-07 16:06
VLAI
EPSS
VEX
Title
vercel hyper rimraf-standalone.js ignoreMap redos
Summary
A vulnerability classified as problematic has been found in vercel hyper up to 3.4.1. This affects the function expand/braceExpand/ignoreMap of the file hyper/bin/rimraf-standalone.js. The manipulation leads to inefficient regular expression complexity. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://vuldb.com/?id.314973 | vdb-entrytechnical-description |
| https://vuldb.com/?ctiid.314973 | signaturepermissions-required |
| https://vuldb.com/?submit.602353 | third-party-advisory |
| https://github.com/vercel/hyper/issues/8098 | exploitissue-tracking |
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CVE-2025-6998 (GCVE-0-2025-6998)
Vulnerability from cvelistv5 – Published: 2025-07-24 19:39 – Updated: 2025-07-25 13:17
VLAI
EPSS
VEX
Title
Calibre Web 0.6.24 & Autocaliweb 0.7.0 - ReDoS
Summary
ReDoS in strip_whitespaces() function in cps/string_helper.py in Calibre Web and Autocaliweb allows unauthenticated remote attackers to cause denial of service via specially crafted username parameter that triggers catastrophic backtracking during login. This issue affects Calibre Web: 0.6.24 (Nicolette); Autocaliweb: from 0.7.0 before 0.7.1.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-1333 - Inefficient Regular Expression Complexity
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://fluidattacks.com/advisories/megadeth | third-party-advisory |
| https://github.com/janeczku/calibre-web | product |
| https://github.com/gelbphoenix/autocaliweb | product |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Calibre Web | Calibre Web |
Affected:
0.6.24
(custom)
|
|
| Autocaliweb | Autocaliweb |
Affected:
0.7.0 , < 0.7.1
(custom)
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CVE-2025-6638 (GCVE-0-2025-6638)
Vulnerability from cvelistv5 – Published: 2025-09-12 10:46 – Updated: 2025-09-12 11:52
VLAI
EPSS
VEX
Title
Regular Expression Denial of Service (ReDoS) in huggingface/transformers
Summary
A Regular Expression Denial of Service (ReDoS) vulnerability was discovered in the Hugging Face Transformers library, specifically affecting the MarianTokenizer's `remove_language_code()` method. This vulnerability is present in version 4.52.4 and has been fixed in version 4.53.0. The issue arises from inefficient regex processing, which can be exploited by crafted input strings containing malformed language code patterns, leading to excessive CPU consumption and potential denial of service.
Severity
5.3 (Medium)
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-1333 - Inefficient Regular Expression Complexity
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| huggingface | huggingface/transformers |
Affected:
unspecified , < 4.53.0
(custom)
|
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CVE-2025-6493 (GCVE-0-2025-6493)
Vulnerability from cvelistv5 – Published: 2025-06-22 22:00 – Updated: 2025-09-29 13:48
VLAI
EPSS
VEX
Title
CodeMirror Markdown Mode markdown.js redos
Summary
A weakness has been identified in CodeMirror up to 5.65.20. Affected is an unknown function of the file mode/markdown/markdown.js of the component Markdown Mode. This manipulation causes inefficient regular expression complexity. It is possible to initiate the attack remotely. The exploit has been made available to the public and could be exploited. Upgrading to version 6.0 is able to address this issue. You should upgrade the affected component. Not all code samples mentioned in the GitHub issue can be found. The repository mentions, that "CodeMirror 6 exists, and is [...] much more actively maintained."
Severity
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://vuldb.com/?id.313610 | vdb-entrytechnical-description |
| https://vuldb.com/?ctiid.313610 | signaturepermissions-required |
| https://vuldb.com/?submit.598875 | third-party-advisory |
| https://github.com/codemirror/codemirror5/issues/7128 | exploitissue-tracking |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| n/a | CodeMirror |
Affected:
5.65.0
Affected: 5.65.1 Affected: 5.65.2 Affected: 5.65.3 Affected: 5.65.4 Affected: 5.65.5 Affected: 5.65.6 Affected: 5.65.7 Affected: 5.65.8 Affected: 5.65.9 Affected: 5.65.10 Affected: 5.65.11 Affected: 5.65.12 Affected: 5.65.13 Affected: 5.65.14 Affected: 5.65.15 Affected: 5.65.16 Affected: 5.65.17 Affected: 5.65.18 Affected: 5.65.19 Affected: 5.65.20 Unaffected: 6.0 |
Credits
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Mitigation
Architecture and Design
Use regular expressions that do not support backtracking, e.g. by removing nested quantifiers.
Mitigation
System Configuration
Set backtracking limits in the configuration of the regular expression implementation, such as PHP's pcre.backtrack_limit. Also consider limits on execution time for the process.
Mitigation
Implementation
Do not use regular expressions with untrusted input. If regular expressions must be used, avoid using backtracking in the expression.
Mitigation
Implementation
Limit the length of the input that the regular expression will process.
CAPEC-492: Regular Expression Exponential Blowup
An adversary may execute an attack on a program that uses a poor Regular Expression(Regex) implementation by choosing input that results in an extreme situation for the Regex. A typical extreme situation operates at exponential time compared to the input size. This is due to most implementations using a Nondeterministic Finite Automaton(NFA) state machine to be built by the Regex algorithm since NFA allows backtracking and thus more complex regular expressions.