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-2022-34402 (GCVE-0-2022-34402)
Vulnerability from cvelistv5 – Published: 2022-10-10 20:55 – Updated: 2024-09-16 23:26
VLAI
EPSS
VEX
Summary
Dell Wyse ThinOS 2205 contains a Regular Expression Denial of Service Vulnerability in UI. An admin privilege attacker could potentially exploit this vulnerability, leading to denial-of-service.
Severity
6.8 (Medium)
CWE
- CWE-1333 - Inefficient Regular Expression Complexity
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Dell | Wyse Proprietary OS (Modern ThinOS) |
Affected:
unspecified , < ThinOS 2208
(custom)
|
Date Public
2022-09-14 00:00
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CVE-2022-31781 (GCVE-0-2022-31781)
Vulnerability from cvelistv5 – Published: 2022-07-13 07:25 – Updated: 2024-08-03 07:26
VLAI
EPSS
VEX
Title
Regular Expression Denial of Service (ReDoS) in ContentType.java. (GHSL-2022-022)
Summary
Apache Tapestry up to version 5.8.1 is vulnerable to Regular Expression Denial of Service (ReDoS) in the way it handles Content Types. Specially crafted Content Types may cause catastrophic backtracking, taking exponential time to complete. Specifically, this is about the regular expression used on the parameter of the org.apache.tapestry5.http.ContentType class. Apache Tapestry 5.8.2 has a fix for this vulnerability. Notice the vulnerability cannot be triggered by web requests in Tapestry code alone. It would only happen if there's some non-Tapestry codepath passing some outside input to the ContentType class constructor.
Severity
No CVSS data available.
CWE
- CWE-1333 - Inefficient Regular Expression Complexity
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://www.openwall.com/lists/oss-security/2022/… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Apache Software Foundation | Apache Tapestry |
Affected:
5.8.1 , < 5.8.1
(custom)
|
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CVE-2022-31147 (GCVE-0-2022-31147)
Vulnerability from cvelistv5 – Published: 2022-07-14 19:30 – Updated: 2025-04-23 18:02
VLAI
EPSS
VEX
Title
jquery-validation ReDoS in url2 due to incomplete fix of CVE-2021-43306
Summary
The jQuery Validation Plugin (jquery-validation) provides drop-in validation for forms. Versions of jquery-validation prior to 1.19.5 are vulnerable to regular expression denial of service (ReDoS) when an attacker is able to supply arbitrary input to the url2 method. This is due to an incomplete fix for CVE-2021-43306. Users should upgrade to version 1.19.5 to receive a patch.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-04-23 15:53 UTC
CWE
- CWE-1333 - Inefficient Regular Expression Complexity
Assigner
References
3 references
| URL | Tags |
|---|---|
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| https://github.com/jquery-validation/jquery-valid… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| jquery-validation | jquery-validation |
Affected:
< 1.19.5
|
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CVE-2022-29158 (GCVE-0-2022-29158)
Vulnerability from cvelistv5 – Published: 2022-09-02 07:10 – Updated: 2024-08-03 06:10
VLAI
EPSS
VEX
Title
Regular Expression Denial of Service (ReDoS) vulnerability in Apache OFBiz
Summary
Apache OFBiz up to version 18.12.05 is vulnerable to Regular Expression Denial of Service (ReDoS) in the way it handles URLs provided by external, unauthenticated users. Upgrade to 18.12.06 or apply patches at https://issues.apache.org/jira/browse/OFBIZ-12599
Severity
No CVSS data available.
CWE
- CWE-1333 - Inefficient Regular Expression Complexity
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://lists.apache.org/thread/7k92rg1o4ql2yw3o0… | x_refsource_MISC |
| http://www.openwall.com/lists/oss-security/2022/09/02/5 | mailing-listx_refsource_MLIST |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Apache Software Foundation | Apache OFBiz |
Affected:
Apache OFBiz , ≤ 18.12.05
(custom)
|
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CVE-2022-26650 (GCVE-0-2022-26650)
Vulnerability from cvelistv5 – Published: 2022-05-17 08:05 – Updated: 2024-08-03 05:11
VLAI
EPSS
VEX
Title
Apache ShenYu (incubating) Regular expression denial of service
Summary
In Apache ShenYui, ShenYu-Bootstrap, RegexPredicateJudge.java uses Pattern.matches(conditionData.getParamValue(), realData) to make judgments, where both parameters are controllable by the user. This can cause an attacker pass in malicious regular expressions and characters causing a resource exhaustion. This issue affects Apache ShenYu (incubating) 2.4.0, 2.4.1 and 2.4.2 and is fixed in 2.4.3.
Severity
No CVSS data available.
CWE
- CWE-1333 - Inefficient Regular Expression Complexity
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://lists.apache.org/thread/8rp33m3nm4bwtx3qx… | x_refsource_MISC |
| http://www.openwall.com/lists/oss-security/2022/05/17/3 | mailing-listx_refsource_MLIST |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Apache Software Foundation | Apache ShenYu (incubating) |
Affected:
unspecified , < 2.4.3
(custom)
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CVE-2022-25598 (GCVE-0-2022-25598)
Vulnerability from cvelistv5 – Published: 2022-03-30 09:20 – Updated: 2024-08-03 04:42
VLAI
EPSS
VEX
Title
Apache DolphinScheduler user registration is vulnerable to ReDoS attacks
Summary
Apache DolphinScheduler user registration is vulnerable to Regular express Denial of Service (ReDoS) attacks, Apache DolphinScheduler users should upgrade to version 2.0.5 or higher.
Severity
No CVSS data available.
CWE
- CWE-1333 - Inefficient Regular Expression Complexity
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://lists.apache.org/thread/hwnw7xr969sg5nv84… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Apache Software Foundation | Apache DolphinScheduler |
Affected:
Apache DolphinScheduler , < 2.0.5
(custom)
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CVE-2022-24836 (GCVE-0-2022-24836)
Vulnerability from cvelistv5 – Published: 2022-04-11 00:00 – Updated: 2024-09-03 12:03
VLAI
EPSS
VEX
Title
Inefficient Regular Expression Complexity in Nokogiri
Summary
Nokogiri is an open source XML and HTML library for Ruby. Nokogiri `< v1.13.4` contains an inefficient regular expression that is susceptible to excessive backtracking when attempting to detect encoding in HTML documents. Users are advised to upgrade to Nokogiri `>= 1.13.4`. There are no known workarounds for this issue.
Severity
7.5 (High)
CWE
Assigner
References
11 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| sparklemotion | nokogiri |
Affected:
< 1.13.4
|
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CVE-2022-23548 (GCVE-0-2022-23548)
Vulnerability from cvelistv5 – Published: 2023-01-05 00:00 – Updated: 2025-03-10 21:32
VLAI
EPSS
VEX
Summary
Discourse is an option source discussion platform. Prior to version 2.8.14 on the `stable` branch and version 2.9.0.beta16 on the `beta` and `tests-passed` branches, parsing posts can be susceptible to regular expression denial of service (ReDoS) attacks. This issue is patched in versions 2.8.14 and 2.9.0.beta16. There are no known workarounds.
Severity
6.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-03-10 21:00 UTC
CWE
- CWE-1333 - Inefficient Regular Expression Complexity
Assigner
References
Impacted products
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CVE-2022-23517 (GCVE-0-2022-23517)
Vulnerability from cvelistv5 – Published: 2022-12-14 16:10 – Updated: 2025-11-03 21:45
VLAI
EPSS
VEX
Title
Inefficient Regular Expression Complexity in rails-html-sanitizer
Summary
rails-html-sanitizer is responsible for sanitizing HTML fragments in Rails applications. Certain configurations of rails-html-sanitizer < 1.4.4 use an inefficient regular expression that is susceptible to excessive backtracking when attempting to sanitize certain SVG attributes. This may lead to a denial of service through CPU resource consumption. This issue has been patched in version 1.4.4.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-02-02 17:07 UTC
CWE
- CWE-1333 - Inefficient Regular Expression Complexity
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://github.com/rails/rails-html-sanitizer/sec… | x_refsource_CONFIRM |
| https://github.com/rails/rails-html-sanitizer/com… | x_refsource_MISC |
| https://hackerone.com/reports/1684163 | x_refsource_MISC |
| https://lists.debian.org/debian-lts-announce/2023… | |
| https://lists.debian.org/debian-lts-announce/2024… |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| rails | rails-html-sanitizer |
Affected:
< 1.4.4
|
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CVE-2022-23514 (GCVE-0-2022-23514)
Vulnerability from cvelistv5 – Published: 2022-12-14 13:19 – Updated: 2025-11-03 21:45
VLAI
EPSS
VEX
Title
Inefficient Regular Expression Complexity in Loofah
Summary
Loofah is a general library for manipulating and transforming HTML/XML documents and fragments, built on top of Nokogiri. Loofah < 2.19.1 contains an inefficient regular expression that is susceptible to excessive backtracking when attempting to sanitize certain SVG attributes. This may lead to a denial of service through CPU resource consumption. This issue is patched in version 2.19.1.
Severity
7.5 (High)
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-04-21 14:49 UTC
CWE
- CWE-1333 - Inefficient Regular Expression Complexity
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/flavorjones/loofah/security/ad… | x_refsource_CONFIRM |
| https://hackerone.com/reports/1684163 | x_refsource_MISC |
| https://lists.debian.org/debian-lts-announce/2023… | |
| https://lists.debian.org/debian-lts-announce/2024… |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| flavorjones | loofah |
Affected:
< 2.19.1
|
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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.