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.
725 vulnerabilities reference this CWE, most recent first.
CVE-2020-36830 (GCVE-0-2020-36830)
Vulnerability from cvelistv5 – Published: 2024-09-02 16:00 – Updated: 2024-09-03 14:21
VLAI
EPSS
VEX
Title
nescalante urlregex Backtracking index.js redos
Summary
A vulnerability was found in nescalante urlregex up to 0.5.0 and classified as problematic. This issue affects some unknown processing of the file index.js of the component Backtracking. 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. Upgrading to version 0.5.1 is able to address this issue. The identifier of the patch is e5a085afe6abfaea1d1a78f54c45af9ef43ca1f9. It is recommended to upgrade the affected component.
Severity
4.3 (Medium)
4.3 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-1333 - Inefficient Regular Expression Complexity
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://vuldb.com/?id.276269 | vdb-entry |
| https://vuldb.com/?ctiid.276269 | signaturepermissions-required |
| https://github.com/nescalante/urlregex/pull/8 | exploitissue-tracking |
| https://github.com/nescalante/urlregex/commit/e5a… | patch |
| https://github.com/nescalante/urlregex/releases/t… | patch |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| nescalante | urlregex |
Affected:
0.1
Affected: 0.2 Affected: 0.3 Affected: 0.4 Affected: 0.5 |
|
| urlregex_project | urlregex |
Affected:
0.1 , ≤ 0.5
(custom)
cpe:2.3:a:urlregex_project:urlregex:*:*:*:*:*:*:*:* |
Credits
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CVE-2020-36661 (GCVE-0-2020-36661)
Vulnerability from cvelistv5 – Published: 2023-02-12 20:31 – Updated: 2025-03-24 18:40
VLAI
EPSS
VEX
Title
Kong lua-multipart multipart.lua is_header redos
Summary
A vulnerability was found in Kong lua-multipart 0.5.8-1. It has been declared as problematic. This vulnerability affects the function is_header of the file src/multipart.lua. The manipulation leads to inefficient regular expression complexity. Upgrading to version 0.5.9-1 is able to address this issue. The patch is identified as d632e5df43a2928fd537784a99a79dec288bf01b. It is recommended to upgrade the affected component. VDB-220642 is the identifier assigned to this vulnerability.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-1333 - Inefficient Regular Expression Complexity
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://vuldb.com/?id.220642 | vdb-entrytechnical-description |
| https://vuldb.com/?ctiid.220642 | signaturepermissions-required |
| https://github.com/Kong/lua-multipart/pull/34 | issue-tracking |
| https://github.com/Kong/lua-multipart/commit/d632… | patch |
| https://github.com/Kong/lua-multipart/releases/ta… | patch |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Kong | lua-multipart |
Affected:
0.5.8-1
|
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CVE-2020-36649 (GCVE-0-2020-36649)
Vulnerability from cvelistv5 – Published: 2023-01-11 14:50 – Updated: 2024-08-04 17:30
VLAI
EPSS
VEX
Title
mholt PapaParse papaparse.js redos
Summary
A vulnerability was found in mholt PapaParse up to 5.1.x. It has been classified as problematic. Affected is an unknown function of the file papaparse.js. The manipulation leads to inefficient regular expression complexity. Upgrading to version 5.2.0 is able to address this issue. The name of the patch is 235a12758cd77266d2e98fd715f53536b34ad621. It is recommended to upgrade the affected component. The identifier of this vulnerability is VDB-218004.
Severity
CWE
- CWE-1333 - Inefficient Regular Expression Complexity
Assigner
References
6 references
| URL | Tags |
|---|---|
| https://vuldb.com/?id.218004 | vdb-entrytechnical-description |
| https://vuldb.com/?ctiid.218004 | signaturepermissions-required |
| https://github.com/mholt/PapaParse/issues/777 | issue-tracking |
| https://github.com/mholt/PapaParse/pull/779 | issue-tracking |
| https://github.com/mholt/PapaParse/commit/235a127… | patch |
| https://github.com/mholt/PapaParse/releases/tag/5.2.0 | patch |
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CVE-2020-26311 (GCVE-0-2020-26311)
Vulnerability from cvelistv5 – Published: 2024-10-26 20:26 – Updated: 2024-10-28 13:42
VLAI
EPSS
VEX
Title
GHSL-2020-312: Regular Expression Denial of Service (ReDoS) in useragent
Summary
Useragent is a user agent parser for Node.js. All versions as of time of publication contain one or more regular expressions that are vulnerable to Regular Expression Denial of Service (ReDoS). As of time of publication, no patches are available.
Severity
SSVC
Exploitation: poc
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 | |
|---|---|---|---|
| 3rd-Eden | useragent |
Affected:
0
(custom)
|
|
| useragent_project | useragent |
Affected:
0 , < *
(custom)
cpe:2.3:a:useragent_project:useragent:*:*:*:*:*:node.js:*:* |
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CVE-2020-26310 (GCVE-0-2020-26310)
Vulnerability from cvelistv5 – Published: 2024-10-26 20:26 – Updated: 2024-10-28 14:15
VLAI
EPSS
VEX
Title
GHSL-2020-305: Regular Expression Denial of Service (ReDoS) in Pure JavaScript HTML5 Parser
Summary
Validate.js provides a declarative way of validating javascript objects. All versions as of 30 November 2020 contain one or more regular expressions that are vulnerable to Regular Expression Denial of Service (ReDoS). As of time of publication, it is unknown if any patches are available.
Severity
SSVC
Exploitation: poc
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 | |
|---|---|---|---|
| blowsie | Pure-JavaScript-HTML5-Parser |
Affected:
0
(custom)
|
|
| blowsie | pure_javascript_html5_parser |
Affected:
0 , < *
(custom)
cpe:2.3:a:blowsie:pure_javascript_html5_parser:*:*:*:*:*:*:*:* |
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CVE-2020-26309 (GCVE-0-2020-26309)
Vulnerability from cvelistv5 – Published: 2024-10-26 20:26 – Updated: 2024-10-28 14:18
VLAI
EPSS
VEX
Title
GHSL-2020-303: Regular Expression Denial of Service (ReDoS) in nope-validator
Summary
Validate.js provides a declarative way of validating javascript objects. Versions 0.11.3 and prior contain one or more regular expressions that are vulnerable to Regular Expression Denial of Service (ReDoS). As of time of publication, it is unknown if any patches are available.
Severity
SSVC
Exploitation: poc
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 | |
|---|---|---|---|
| ftonato | nope-validator |
Affected:
0 , ≤ 0.11.3
(custom)
|
|
| ftonato | nope-validator |
Affected:
0 , ≤ 0.11.3
(custom)
cpe:2.3:a:ftonato:nope-validator:*:*:*:*:*:*:*:* |
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CVE-2020-26308 (GCVE-0-2020-26308)
Vulnerability from cvelistv5 – Published: 2024-10-26 20:26 – Updated: 2024-10-28 14:45
VLAI
EPSS
VEX
Title
GHSL-2020-302: Regular Expression Denial of Service (ReDoS) in validate.js
Summary
Validate.js provides a declarative way of validating javascript objects. Versions 0.13.1 and prior contain one or more regular expressions that are vulnerable to Regular Expression Denial of Service (ReDoS). As of time of publication, no known patches are available.
Severity
SSVC
Exploitation: poc
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 | |
|---|---|---|---|
| ansman | validate.js |
Affected:
0 , ≤ 0.13.1
(custom)
|
|
| ansman | validate.js |
Affected:
0 , ≤ 0.13.1
(custom)
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CVE-2020-26307 (GCVE-0-2020-26307)
Vulnerability from cvelistv5 – Published: 2024-10-26 20:26 – Updated: 2024-10-28 14:48
VLAI
EPSS
VEX
Title
GHSL-2020-301: Regular Expression Denial of Service (ReDoS) in HTML2Markdown
Summary
HTML2Markdown is a Javascript implementation for converting HTML to Markdown text. All available versions contain one or more regular expressions that are vulnerable to Regular Expression Denial of Service (ReDoS). As of time of publication, no known patches are available.
Severity
SSVC
Exploitation: poc
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 | |
|---|---|---|---|
| kates | html2markdown |
Affected:
0 , ≤ 1.0.2
(custom)
|
|
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Affected:
0 , ≤ 1.0.2
(custom)
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CVE-2020-26306 (GCVE-0-2020-26306)
Vulnerability from cvelistv5 – Published: 2024-10-26 20:26 – Updated: 2024-10-28 14:50
VLAI
EPSS
VEX
Title
GHSL-2020-296: Regular Expression Denial of Service (ReDoS) in Knwl.js
Summary
Knwl.js is a Javascript library that parses through text for dates, times, phone numbers, emails, places, and more. Versions 1.0.2 and prior contain one or more regular expressions that are vulnerable to Regular Expression Denial of Service (ReDoS). As of time of publication, no known patches are available.
Severity
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-1333 - Inefficient Regular Expression Complexity
Assigner
References
Impacted products
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CVE-2020-26305 (GCVE-0-2020-26305)
Vulnerability from cvelistv5 – Published: 2024-10-26 20:26 – Updated: 2024-10-28 14:52
VLAI
EPSS
VEX
Title
GHSL-2020-291: Regular Expression Denial of Service (ReDoS) in CommonRegexJS
Summary
CommonRegexJS is a CommonRegex port for JavaScript. All available versions contain one or more regular expressions that are vulnerable to Regular Expression Denial of Service (ReDoS). As of time of publication, no known patches are available.
Severity
SSVC
Exploitation: poc
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 | |
|---|---|---|---|
| talyssonoc | CommonRegexJS |
Affected:
0
(custom)
|
|
| talyssonoc | commonregexjs |
Affected:
0 , < *
(custom)
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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.