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-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 (v2.0.3)
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:*:*:*:*:*:*:* |
Credits
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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 (v2.0.3)
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 (v2.0.3)
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
Credits
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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 (v2.0.3)
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 |
Impacted products
Credits
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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 (v2.0.3)
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 |
Impacted products
Credits
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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 (v2.0.3)
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 |
Impacted products
Credits
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CVE-2024-1963 (GCVE-0-2024-1963)
Vulnerability from cvelistv5 – Published: 2024-06-12 23:02 – Updated: 2024-08-30 13:24
VLAI
EPSS
VEX
Title
Uncontrolled Resource Consumption in GitLab
Summary
An issue has been discovered in GitLab CE/EE affecting all versions starting from 8.4 prior to 16.10.7, starting from 16.11 prior to 16.11.4, and starting from 17.0 prior to 17.0.2. A vulnerability in GitLab's Asana integration allowed an attacker to potentially cause a regular expression denial of service by sending specially crafted requests.
Severity
6.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-1333 - Inefficient Regular Expression Complexity
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://gitlab.com/gitlab-org/gitlab/-/issues/443577 | issue-trackingpermissions-required |
| https://hackerone.com/reports/2376482 | technical-descriptionexploitpermissions-required |
| https://about.gitlab.com/releases/2024/06/12/patc… |
Impacted products
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CVE-2024-1892 (GCVE-0-2024-1892)
Vulnerability from cvelistv5 – Published: 2024-02-28 00:00 – Updated: 2024-08-11 14:28
VLAI
EPSS
VEX
Title
ReDoS Vulnerability in scrapy/scrapy's XMLFeedSpider
Summary
A Regular Expression Denial of Service (ReDoS) vulnerability exists in the XMLFeedSpider class of the scrapy/scrapy project, specifically in the parsing of XML content. By crafting malicious XML content that exploits inefficient regular expression complexity used in the parsing process, an attacker can cause a denial-of-service (DoS) condition. This vulnerability allows for the system to hang and consume significant resources, potentially rendering services that utilize Scrapy for XML processing unresponsive.
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
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| scrapy | scrapy/scrapy |
Affected:
unspecified , < 2.11
(custom)
|
|
| scrapy | scrapy |
Affected:
0 , < 2.11
(custom)
cpe:2.3:a:scrapy:scrapy:*:*:*:*:*:*:*:* |
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CVE-2024-1736 (GCVE-0-2024-1736)
Vulnerability from cvelistv5 – Published: 2024-06-12 23:02 – Updated: 2024-09-18 13:10
VLAI
EPSS
VEX
Title
Uncontrolled Resource Consumption in GitLab
Summary
An issue has been discovered in GitLab CE/EE affecting all versions prior to 16.10.7, starting from 16.11 prior to 16.11.4, and starting from 17.0 prior to 17.0.2. A vulnerability in GitLab's CI/CD pipeline editor could allow for denial of service attacks through maliciously crafted configuration files.
Severity
6.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-1333 - Inefficient Regular Expression Complexity
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://gitlab.com/gitlab-org/gitlab/-/issues/442695 | issue-trackingpermissions-required |
| https://hackerone.com/reports/2358689 | technical-descriptionexploitpermissions-required |
| https://about.gitlab.com/releases/2024/06/12/patc… |
Impacted products
Credits
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CVE-2024-1495 (GCVE-0-2024-1495)
Vulnerability from cvelistv5 – Published: 2024-06-12 23:02 – Updated: 2024-08-30 13:24
VLAI
EPSS
VEX
Title
Uncontrolled Resource Consumption in GitLab
Summary
An issue has been discovered in GitLab CE/EE affecting all versions starting from 13.1 prior to 16.10.7, starting from 16.11 prior to 16.11.4, and starting from 17.0 prior to 17.0.2. It was possible for an attacker to cause a denial of service using maliciously crafted file.
Severity
6.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-1333 - Inefficient Regular Expression Complexity
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://gitlab.com/gitlab-org/gitlab/-/issues/441807 | issue-trackingpermissions-required |
| https://hackerone.com/reports/2359528 | technical-descriptionexploitpermissions-required |
| https://about.gitlab.com/releases/2024/06/12/patc… |
Impacted products
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.