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-2023-3364 (GCVE-0-2023-3364)
Vulnerability from cvelistv5 – Published: 2023-08-01 23:36 – Updated: 2025-11-20 04:07
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 8.14 before 16.0.8, all versions starting from 16.1 before 16.1.3, all versions starting from 16.2 before 16.2.2. A Regular Expression Denial of Service was possible via sending crafted payloads which use AutolinkFilter to the preview_markdown endpoint.
Severity
7.5 (High)
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-08-30 14:22 UTC
CWE
- CWE-1333 - Inefficient Regular Expression Complexity
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://gitlab.com/gitlab-org/gitlab/-/issues/415995 | issue-tracking |
| https://hackerone.com/reports/1959727 | technical-descriptionexploitpermissions-required |
Impacted products
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CVE-2023-3210 (GCVE-0-2023-3210)
Vulnerability from cvelistv5 – Published: 2023-09-01 10:31 – Updated: 2025-11-20 04:07
VLAI
EPSS
VEX
Title
Inefficient Regular Expression Complexity in GitLab
Summary
An issue has been discovered in GitLab affecting all versions starting from 15.11 before 16.1.5, all versions starting from 16.2 before 16.2.5, all versions starting from 16.3 before 16.3.1. An authenticated user could trigger a denial of service when importing or cloning malicious content.
Severity
6.5 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-07-25 13:55 UTC
CWE
- CWE-1333 - Inefficient Regular Expression Complexity
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://gitlab.com/gitlab-org/gitlab/-/issues/415074 | issue-tracking |
| https://hackerone.com/reports/2011474 | technical-descriptionexploitpermissions-required |
Impacted products
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CVE-2023-3205 (GCVE-0-2023-3205)
Vulnerability from cvelistv5 – Published: 2023-09-01 10:01 – Updated: 2025-11-20 04:07
VLAI
EPSS
VEX
Title
Inefficient Regular Expression Complexity in GitLab
Summary
An issue has been discovered in GitLab affecting all versions starting from 15.11 before 16.1.5, all versions starting from 16.2 before 16.2.5, all versions starting from 16.3 before 16.3.1. An authenticated user could trigger a denial of service when importing or cloning malicious content.
Severity
6.5 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-07-24 13:18 UTC
CWE
- CWE-1333 - Inefficient Regular Expression Complexity
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://gitlab.com/gitlab-org/gitlab/-/issues/415067 | issue-tracking |
| https://hackerone.com/reports/2011464 | technical-descriptionexploitpermissions-required |
Impacted products
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CVE-2023-0632 (GCVE-0-2023-0632)
Vulnerability from cvelistv5 – Published: 2023-08-01 23:36 – Updated: 2025-11-20 04:06
VLAI
EPSS
VEX
Title
Inefficient Regular Expression Complexity in GitLab
Summary
An issue has been discovered in GitLab affecting all versions starting from 15.2 before 16.0.8, all versions starting from 16.1 before 16.1.3, all versions starting from 16.2 before 16.2.2. A Regular Expression Denial of Service was possible by using crafted payloads to search Harbor Registry.
Severity
6.5 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-07-24 13:33 UTC
CWE
- CWE-1333 - Inefficient Regular Expression Complexity
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://gitlab.com/gitlab-org/gitlab/-/issues/390148 | issue-tracking |
| https://hackerone.com/reports/1852677 | technical-descriptionexploitpermissions-required |
Impacted products
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CVE-2022-42966 (GCVE-0-2022-42966)
Vulnerability from cvelistv5 – Published: 2022-11-09 00:00 – Updated: 2025-05-01 19:18
VLAI
EPSS
VEX
Title
Exponential ReDoS in cleo leads to denial of service
Summary
An exponential ReDoS (Regular Expression Denial of Service) can be triggered in the cleo PyPI package, when an attacker is able to supply arbitrary input to the Table.set_rows method
Severity
5.9 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-05-01 19:18 UTC
CWE
- CWE-1333 - Inefficient Regular Expression Complexity
Assigner
References
1 reference
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CVE-2022-42965 (GCVE-0-2022-42965)
Vulnerability from cvelistv5 – Published: 2022-11-09 00:00 – Updated: 2025-05-01 19:19
VLAI
EPSS
VEX
Title
Exponential ReDoS in snowflake-connector-python leads to denial of service
Summary
An exponential ReDoS (Regular Expression Denial of Service) can be triggered in the snowflake-connector-python PyPI package, when an attacker is able to supply arbitrary input to the undocumented get_file_transfer_type method
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-05-01 19:19 UTC
CWE
- CWE-1333 - Inefficient Regular Expression Complexity
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| snowflake-connector-python | snowflake-connector-python |
Affected:
unspecified , < 2.8.2
(custom)
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CVE-2022-42964 (GCVE-0-2022-42964)
Vulnerability from cvelistv5 – Published: 2022-11-09 00:00 – Updated: 2025-05-01 19:19
VLAI
EPSS
VEX
Title
Exponential ReDoS in pymatgen leads to denial of service
Summary
An exponential ReDoS (Regular Expression Denial of Service) can be triggered in the pymatgen PyPI package, when an attacker is able to supply arbitrary input to the GaussianInput.from_string method
Severity
5.9 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-05-01 19:19 UTC
CWE
- CWE-1333 - Inefficient Regular Expression Complexity
Assigner
References
1 reference
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CVE-2022-36064 (GCVE-0-2022-36064)
Vulnerability from cvelistv5 – Published: 2022-09-06 20:55 – Updated: 2025-04-22 17:24
VLAI
EPSS
VEX
Title
Shescape Inefficient Regular Expression Complexity vulnerability
Summary
Shescape is a shell escape package for JavaScript. An Inefficient Regular Expression Complexity vulnerability impacts users that use Shescape to escape arguments for the Unix shells `Bash` and `Dash`, or any not-officially-supported Unix shell; and/or using the `escape` or `escapeAll` functions with the `interpolation` option set to `true`. An attacker can cause polynomial backtracking or quadratic runtime in terms of the input string length due to two Regular Expressions in Shescape that are vulnerable to Regular Expression Denial of Service (ReDoS). This bug has been patched in v1.5.10. For `Dash` only, this bug has been patched since v1.5.9. As a workaround, a maximum length can be enforced on input strings to Shescape to reduce the impact of the vulnerability. It is not recommended to try and detect vulnerable input strings, as the logic for this may end up being vulnerable to ReDoS itself.
Severity
5.9 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-04-22 15:44 UTC
CWE
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/ericcornelissen/shescape/secur… | x_refsource_CONFIRM |
| https://github.com/ericcornelissen/shescape/pull/373 | x_refsource_MISC |
| https://github.com/ericcornelissen/shescape/relea… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| ericcornelissen | shescape |
Affected:
>= 1.5.1, < 1.5.10
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CVE-2022-36034 (GCVE-0-2022-36034)
Vulnerability from cvelistv5 – Published: 2022-08-29 16:50 – Updated: 2025-04-23 17:47
VLAI
EPSS
VEX
Title
Possible Regular Expression Denial of Service (ReDoS) used on uncontrolled data in nitrado.js
Summary
nitrado.js is a type safe wrapper for the Nitrado API. Possible ReDoS with lib input of `{{` and with many repetitions of `{{|`. This issue has been patched in all versions above `0.2.5`. There are currently no known workarounds.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-04-23 15:52 UTC
CWE
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/cainthebest/nitrado.js/securit… | x_refsource_CONFIRM |
| https://github.com/cainthebest/nitrado.js/blob/v0… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| cainthebest | nitrado.js |
Affected:
< 0.2.5
|
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CVE-2022-34428 (GCVE-0-2022-34428)
Vulnerability from cvelistv5 – Published: 2022-09-30 19:25 – Updated: 2025-05-20 15:33
VLAI
EPSS
VEX
Summary
Dell Hybrid Client prior to version 1.8 contains a Regular Expression Denial of Service Vulnerability in the UI. An adversary with WMS group admin access could potentially exploit this vulnerability, leading to temporary denial-of-service.
Severity
5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-05-20 15:33 UTC
CWE
- CWE-1333 - Inefficient Regular Expression Complexity
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://www.dell.com/support/kbdoc/en-us/00020334… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Dell | Dell Hybrid Client (DHC) |
Affected:
unspecified , < 1.8
(custom)
|
Date Public
2022-09-14 00:00
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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.