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.
792 vulnerabilities reference this CWE, most recent first.
CVE-2024-4148 (GCVE-0-2024-4148)
Vulnerability from cvelistv5 – Published: 2024-06-01 15:54 – Updated: 2025-01-30 13:09
VLAI
EPSS
VEX
Title
Redos (Regular Expression Denial of Service) in lunary-ai/lunary
Summary
A Regular Expression Denial of Service (ReDoS) vulnerability exists in the lunary-ai/lunary application, version 1.2.10. An attacker can exploit this vulnerability by maliciously manipulating regular expressions, which can significantly impact the response time of the application and potentially render it completely non-functional. Specifically, the vulnerability can be triggered by sending a specially crafted request to the application, leading to a denial of service where the application crashes.
Severity
7.5 (High)
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-06-03 15:56 UTC
CWE
- CWE-1333 - Inefficient Regular Expression Complexity
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| lunary-ai | lunary-ai/lunary |
Affected:
unspecified , < 1.3.4
(custom)
|
|
| lunary-ai | lunary |
Affected:
1.2.10
cpe:2.3:a:lunary-ai:lunary:1.2.10:*:*:*:*:*:*:* |
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CVE-2024-4067 (GCVE-0-2024-4067)
Vulnerability from cvelistv5 – Published: 2024-05-13 10:04 – Updated: 2024-09-17 19:47
VLAI
EPSS
VEX
Title
Regular Expression Denial of Service in micromatch
Summary
The NPM package `micromatch` prior to 4.0.8 is vulnerable to Regular Expression Denial of Service (ReDoS). The vulnerability occurs in `micromatch.braces()` in `index.js` because the pattern `.*` will greedily match anything. By passing a malicious payload, the pattern matching will keep backtracking to the input while it doesn't find the closing bracket. As the input size increases, the consumption time will also increase until it causes the application to hang or slow down. There was a merged fix but further testing shows the issue persists. This issue should be mitigated by using a safe pattern that won't start backtracking the regular expression due to greedy matching. This issue was fixed in version 4.0.8.
Severity
5.3 (Medium)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-05-13 16:30 UTC
CWE
- CWE-1333 - Inefficient Regular Expression Complexity
Assigner
References
8 references
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| micromatch | micromatch |
Affected:
0 , < 4.0.8
(cpe)
Unaffected: 4.0.8 (cpe) |
|
| micromatch | micromatch |
Affected:
0 , < 4.0.8
(custom)
cpe:2.3:a:micromatch:micromatch:*:*:*:*:*:*:*:* |
Date Public
2024-05-13 12:44
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CVE-2024-4056 (GCVE-0-2024-4056)
Vulnerability from cvelistv5 – Published: 2024-04-26 06:02 – Updated: 2026-02-23 10:10
VLAI
EPSS
VEX
Title
Denial of service condition in M-Files Server
Summary
Denial of service condition in M-Files Server in versions before 24.4.13592.4 and after 23.11 (excluding 24.2 LTS) allows unauthenticated user to consume computing resources.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-04-26 19:19 UTC
CWE
- CWE-1333 - Inefficient Regular Expression Complexity
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://product.m-files.com/security-advisories/c… | vendor-advisory |
| https://empower.m-files.com/security-advisories/C… | vendor-advisory |
| https://www.m-files.com/about/trust-center/securi… | x_transferred |
Impacted products
4 products
| Vendor | Product | Version | |
|---|---|---|---|
| M-Files Corporation | M-Files Server |
Affected:
23.11 , < 24.4.13592.4
(custom)
Unaffected: 24.2 LTS |
|
| m-files | m-files_server |
Affected:
*
cpe:2.3:a:m-files:m-files_server:-:*:*:*:*:*:*:* |
|
| m-files | m-files_server |
Affected:
-
cpe:2.3:a:m-files:m-files_server:-:*:*:*:*:*:*:* |
|
| m-files | m-files_server |
Unknown:
24.2 LTS
cpe:2.3:a:m-files:m-files_server:-:*:*:*:*:*:*:* |
Date Public
2024-04-29 11:05
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CVE-2024-4025 (GCVE-0-2024-4025)
Vulnerability from cvelistv5 – Published: 2025-06-20 18:14 – Updated: 2025-06-23 15:22
VLAI
EPSS
VEX
Title
Inefficient Regular Expression Complexity in GitLab
Summary
A Denial of Service (DoS) condition has been discovered in GitLab CE/EE affecting all versions from 7.10 prior before 16.11.5, version 17.0 before 17.0.3, and 17.1 before 17.1.1. It is possible for an attacker to cause a denial of service using a crafted markdown page.
Severity
6.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-06-23 15:22 UTC
CWE
- CWE-1333 - Inefficient Regular Expression Complexity
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://gitlab.com/gitlab-org/gitlab/-/issues/457474 | issue-trackingpermissions-required |
| https://hackerone.com/reports/2024974 | technical-descriptionexploitpermissions-required |
Impacted products
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CVE-2024-3772 (GCVE-0-2024-3772)
Vulnerability from cvelistv5 – Published: 2024-04-15 01:42 – Updated: 2025-02-13 17:53
VLAI
EPSS
VEX
Title
Regular expression denial of service in Pydantic < 2.4.0
Summary
Regular expression denial of service in Pydanic < 2.4.0, < 1.10.13 allows remote attackers to cause denial of service via a crafted email string.
Severity
5.9 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-04-22 19:52 UTC
CWE
- CWE-1333 - Inefficient Regular Expression Complexity
Assigner
References
Impacted products
3 products
| Vendor | Product | Version | |
|---|---|---|---|
| Pydantic | Pydantic |
Affected:
2.0 , < 2.4.0
(semver)
Affected: 1.0 , < 1.10.13 (semver) |
|
| pydantic_project | pydantic |
Affected:
1.0 , < 1.10.13
(semver)
cpe:2.3:a:pydantic_project:pydantic:1.0:-:*:*:*:*:*:* |
|
| pydantic_project | pydantic |
Affected:
2.0
cpe:2.3:a:pydantic_project:pydantic:2.0:*:*:*:*:*:*:* |
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CVE-2024-3651 (GCVE-0-2024-3651)
Vulnerability from cvelistv5 – Published: 2024-07-07 17:22 – Updated: 2025-11-04 22:06
VLAI
EPSS
VEX
Title
Denial of Service via Quadratic Complexity in kjd/idna
Summary
A vulnerability was identified in the kjd/idna library, specifically within the `idna.encode()` function, affecting version 3.6. The issue arises from the function's handling of crafted input strings, which can lead to quadratic complexity and consequently, a denial of service condition. This vulnerability is triggered by a crafted input that causes the `idna.encode()` function to process the input with considerable computational load, significantly increasing the processing time in a quadratic manner relative to the input size.
Severity
6.2 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-07-07 19:07 UTC
CWE
- CWE-1333 - Inefficient Regular Expression Complexity
Assigner
References
7 references
Impacted products
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CVE-2024-3114 (GCVE-0-2024-3114)
Vulnerability from cvelistv5 – Published: 2024-08-08 10:31 – Updated: 2024-08-30 13:24
VLAI
EPSS
VEX
Title
Uncontrolled Resource Consumption in GitLab
Summary
An issue was discovered in GitLab CE/EE affecting all versions starting from 11.10 prior to 17.0.6, 17.1 prior to 17.1.4, and 17.2 prior to 17.2.2, with the processing logic for parsing invalid commits can lead to a regular expression DoS attack on the server.
Severity
4.3 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-08-09 18:05 UTC
CWE
- CWE-1333 - Inefficient Regular Expression Complexity
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://gitlab.com/gitlab-org/gitlab/-/issues/452547 | issue-trackingpermissions-required |
| https://hackerone.com/reports/2416630 | technical-descriptionexploitpermissions-required |
Impacted products
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CVE-2024-2829 (GCVE-0-2024-2829)
Vulnerability from cvelistv5 – Published: 2024-04-25 11:02 – Updated: 2025-11-20 04:12
VLAI
EPSS
VEX
Title
Inefficient Regular Expression Complexity in GitLab
Summary
An issue has been discovered in GitLab CE/EE affecting all versions starting from 12.5 before 16.9.6, all versions starting from 16.10 before 16.10.4, all versions starting from 16.11 before 16.11.1. A crafted wildcard filter in FileFinder may lead to a denial of service.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-04-30 15:46 UTC
CWE
- CWE-1333 - Inefficient Regular Expression Complexity
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://gitlab.com/gitlab-org/gitlab/-/issues/451456 | issue-trackingpermissions-required |
| https://hackerone.com/reports/2416728 | technical-descriptionexploitpermissions-required |
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CVE-2024-2800 (GCVE-0-2024-2800)
Vulnerability from cvelistv5 – Published: 2024-08-08 10:31 – Updated: 2024-08-30 13:24
VLAI
EPSS
VEX
Title
Uncontrolled Resource Consumption in GitLab
Summary
ReDoS flaw in RefMatcher when matching branch names using wildcards in GitLab EE/CE affecting all versions from 11.3 prior to 17.0.6, 17.1 prior to 17.1.4, and 17.2 prior to 17.2.2 allows denial of service via Regex backtracking.
Severity
6.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-08-08 12:52 UTC
CWE
- CWE-1333 - Inefficient Regular Expression Complexity
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://gitlab.com/gitlab-org/gitlab/-/issues/451293 | issue-trackingpermissions-required |
| https://hackerone.com/reports/2416332 | technical-descriptionexploitpermissions-required |
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CVE-2024-2651 (GCVE-0-2024-2651)
Vulnerability from cvelistv5 – Published: 2024-05-09 01:38 – Updated: 2024-10-03 06:23
VLAI
EPSS
VEX
Title
Inefficient Regular Expression Complexity in GitLab
Summary
An issue has been discovered in GitLab CE/EE affecting all versions before 16.9.7, all versions starting from 16.10 before 16.10.5, all versions starting from 16.11 before 16.11.2. It was possible for an attacker to cause a denial of service using maliciously crafted markdown content.
Severity
6.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-05-20 17:13 UTC
CWE
- CWE-1333 - Inefficient Regular Expression Complexity
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://gitlab.com/gitlab-org/gitlab/-/issues/450830 | issue-trackingpermissions-required |
| https://hackerone.com/reports/2408619 | technical-descriptionexploitpermissions-required |
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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.