CWE-1333
Inefficient Regular Expression Complexity
The product uses a regular expression with a worst-case computational complexity that is inefficient and possibly exponential.
CVE-2024-47889 (GCVE-0-2024-47889)
Vulnerability from cvelistv5 – Published: 2024-10-16 20:55 – Updated: 2024-10-17 16:31
VLAI
Title
Action Mailer has possible ReDoS vulnerability in block_format
Summary
Action Mailer is a framework for designing email service layers. Starting in version 3.0.0 and prior to versions 6.1.7.9, 7.0.8.5, 7.1.4.1, and 7.2.1.1, there is a possible ReDoS vulnerability in the block_format helper in Action Mailer. Carefully crafted text can cause the block_format helper to take an unexpected amount of time, possibly resulting in a DoS vulnerability. All users running an affected release should either upgrade to versions 6.1.7.9, 7.0.8.5, 7.1.4.1, or 7.2.1.1 or apply the relevant patch immediately. As a workaround, users can avoid calling the `block_format` helper or upgrade to Ruby 3.2. Ruby 3.2 has mitigations for this problem, so Rails applications using Ruby 3.2 or newer are unaffected. Rails 8.0.0.beta1 requires Ruby 3.2 or greater so is unaffected.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-1333 - Inefficient Regular Expression Complexity
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://github.com/rails/rails/security/advisorie… | x_refsource_CONFIRM |
| https://github.com/rails/rails/commit/0e5694f4d32… | x_refsource_MISC |
| https://github.com/rails/rails/commit/3612e3eb3fb… | x_refsource_MISC |
| https://github.com/rails/rails/commit/985f1923fa6… | x_refsource_MISC |
| https://github.com/rails/rails/commit/be898cc9969… | x_refsource_MISC |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| rails | rails |
Affected:
>= 3.0.0, < 6.1.7.9
Affected: >= 7.0.0, < 7.0.8.5 Affected: >= 7.1.0, < 7.1.4.1 Affected: >= 7.2.0, < 7.2.1.1 |
|
| rubyonrails | rails |
Affected:
3.0.0 , < 6.1.7.9
(custom)
Affected: 7.0.0 , < 7.0.8.5 (custom) Affected: 7.1.0 , < 7.1.4.1 (custom) Affected: 7.2.0 , < 7.2.1.1 (custom) cpe:2.3:a:rubyonrails:rails:*:*:*:*:*:*:*:* |
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CVE-2024-49761 (GCVE-0-2024-49761)
Vulnerability from cvelistv5 – Published: 2024-10-28 14:10 – Updated: 2025-11-03 20:41
VLAI
Title
REXML ReDoS vulnerability
Summary
REXML is an XML toolkit for Ruby. The REXML gem before 3.3.9 has a ReDoS vulnerability when it parses an XML that has many digits between &# and x...; in a hex numeric character reference (&#x...;). This does not happen with Ruby 3.2 or later. Ruby 3.1 is the only affected maintained Ruby. The REXML gem 3.3.9 or later include the patch to fix the vulnerability.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-1333 - Inefficient Regular Expression Complexity
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://github.com/ruby/rexml/security/advisories… | x_refsource_CONFIRM |
| https://github.com/ruby/rexml/commit/ce59f2eb1aeb… | x_refsource_MISC |
| https://www.ruby-lang.org/en/news/2024/10/28/redo… | x_refsource_MISC |
| https://security.netapp.com/advisory/ntap-2024122… | |
| https://lists.debian.org/debian-lts-announce/2025… |
Impacted products
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CVE-2024-52524 (GCVE-0-2024-52524)
Vulnerability from cvelistv5 – Published: 2024-11-14 17:21 – Updated: 2024-11-21 14:56
VLAI
Title
ReDoS in Giskard Scan text perturbation
Summary
Giskard is an evaluation and testing framework for AI systems. A Remote Code Execution (ReDoS) vulnerability was discovered in Giskard component by the GitHub Security Lab team. When processing datasets with specific text patterns with Giskard detectors, this vulnerability could trigger exponential regex evaluation times, potentially leading to denial of service. Giskard versions prior to 2.15.5 are affected.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-1333 - Inefficient Regular Expression Complexity
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/Giskard-AI/giskard/security/ad… | x_refsource_CONFIRM |
| https://github.com/Giskard-AI/giskard/commit/48ce… | x_refsource_MISC |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Giskard-AI | giskard |
Affected:
< 2.15.5
|
|
| giskard-ai | giskard |
Affected:
0 , < 2.15.5
(custom)
cpe:2.3:a:giskard-ai:giskard:*:*:*:*:*:*:*:* |
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CVE-2024-52798 (GCVE-0-2024-52798)
Vulnerability from cvelistv5 – Published: 2024-12-05 22:45 – Updated: 2025-01-24 20:03
VLAI
Title
path-to-regexp Unpatched `path-to-regexp` ReDoS in 0.1.x
Summary
path-to-regexp turns path strings into a regular expressions. In certain cases, path-to-regexp will output a regular expression that can be exploited to cause poor performance. The regular expression that is vulnerable to backtracking can be generated in the 0.1.x release of path-to-regexp. Upgrade to 0.1.12. This vulnerability exists because of an incomplete fix for CVE-2024-45296.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-1333 - Inefficient Regular Expression Complexity
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/pillarjs/path-to-regexp/securi… | x_refsource_CONFIRM |
| https://github.com/pillarjs/path-to-regexp/commit… | x_refsource_MISC |
| https://security.netapp.com/advisory/ntap-2025012… |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| pillarjs | path-to-regexp |
Affected:
< 0.1.12
|
|
| pillarjs | path-to-regexp |
Affected:
0 , < 0.1.12
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CVE-2024-54170 (GCVE-0-2024-54170)
Vulnerability from cvelistv5 – Published: 2025-02-27 14:55 – Updated: 2025-02-27 15:12
VLAI
Title
IBM EntireX denial of service
Summary
IBM EntireX 11.1 could allow a local user to cause a denial of service due to use of a regular expression with an inefficient complexity that consumes excessive CPU cycles.
Severity
5.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-1333 - Inefficient Regular Expression Complexity
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://www.ibm.com/support/pages/node/7184194 | vendor-advisory |
Impacted products
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CVE-2024-5552 (GCVE-0-2024-5552)
Vulnerability from cvelistv5 – Published: 2024-06-06 18:09 – Updated: 2024-08-01 21:18
VLAI
Title
ReDoS in kubeflow/kubeflow
Summary
kubeflow/kubeflow is vulnerable to a Regular Expression Denial of Service (ReDoS) attack due to inefficient regular expression complexity in its email validation mechanism. An attacker can remotely exploit this vulnerability without authentication by providing specially crafted input that causes the application to consume an excessive amount of CPU resources. This vulnerability affects the latest version of kubeflow/kubeflow, specifically within the centraldashboard-angular backend component. The impact of exploiting this vulnerability includes resource exhaustion, and service disruption.
Severity
7.5 (High)
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-1333 - Inefficient Regular Expression Complexity
Assigner
References
1 reference
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| kubeflow | kubeflow/kubeflow |
Affected:
unspecified , ≤ latest
(custom)
|
|
| kubeflow | kubeflow |
Affected:
0 , ≤ 1.8.0
(custom)
cpe:2.3:a:kubeflow:kubeflow:*:*:*:*:*:*:*:* |
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CVE-2024-58340 (GCVE-0-2024-58340)
Vulnerability from cvelistv5 – Published: 2026-01-12 23:05 – Updated: 2026-03-05 01:29
VLAI
Title
LangChain <= 0.3.1 MRKLOutputParser ReDoS
Summary
LangChain versions up to and including 0.3.1 contain a regular expression denial-of-service (ReDoS) vulnerability in the MRKLOutputParser.parse() method (libs/langchain/langchain/agents/mrkl/output_parser.py). The parser applies a backtracking-prone regular expression when extracting tool actions from model output. An attacker who can supply or influence the parsed text (for example via prompt injection in downstream applications that pass LLM output directly into MRKLOutputParser.parse()) can trigger excessive CPU consumption by providing a crafted payload, causing significant parsing delays and a denial-of-service condition.
Severity
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-1333 - Inefficient Regular Expression Complexity
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://huntr.com/bounties/e7ece02c-d4bb-4166-8e0… | technical-descriptionexploit |
| https://www.langchain.com/ | product |
| https://github.com/langchain-ai/langchain | product |
| https://www.vulncheck.com/advisories/langchain-mr… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| LangChain AI | LangChain |
Affected:
0 , ≤ 0.3.1
(semver)
|
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CVE-2024-6038 (GCVE-0-2024-6038)
Vulnerability from cvelistv5 – Published: 2024-06-27 18:41 – Updated: 2025-10-15 12:50
VLAI
Title
ReDoS Vulnerability in gaizhenbiao/chuanhuchatgpt
Summary
A Regular Expression Denial of Service (ReDoS) vulnerability exists in the latest version of gaizhenbiao/chuanhuchatgpt. The vulnerability is located in the filter_history function within the utils.py module. This function takes a user-provided keyword and attempts to match it against chat history filenames using a regular expression search. Due to the lack of sanitization or validation of the keyword parameter, an attacker can inject a specially crafted regular expression, leading to a denial of service condition. This can cause severe degradation of service performance and potential system unavailability.
Severity
7.5 (High)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-1333 - Inefficient Regular Expression Complexity
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| gaizhenbiao | gaizhenbiao/chuanhuchatgpt |
Affected:
unspecified , < 20240918
(custom)
|
|
| gaizhenbiao | chuanhuchatgpt |
Affected:
0
cpe:2.3:a:gaizhenbiao:chuanhuchatgpt:-:*:*:*:*:*:*:* |
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CVE-2024-6232 (GCVE-0-2024-6232)
Vulnerability from cvelistv5 – Published: 2024-09-03 12:29 – Updated: 2025-11-03 22:32
VLAI
Title
Regular-expression DoS when parsing TarFile headers
Summary
There is a MEDIUM severity vulnerability affecting CPython.
Regular expressions that allowed excessive backtracking during tarfile.TarFile header parsing are vulnerable to ReDoS via specifically-crafted tar archives.
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
13 references
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Python Software Foundation | CPython |
Affected:
0 , < 3.8.20
(python)
Affected: 3.9.0 , < 3.9.20 (python) Affected: 3.10.0 , < 3.10.15 (python) Affected: 3.11.0 , < 3.11.10 (python) Affected: 3.12.0 , < 3.12.6 (python) Affected: 3.13.0a1 , < 3.13.0rc2 (python) |
|
| python | cpython |
Affected:
0 , < 3.8.20
(custom)
Affected: 3.9.0 , < 3.9.20 (custom) Affected: 3.10.0 , < 3.10.15 (custom) Affected: 3.11.0 , < 3.11.10 (custom) Affected: 3.12.0 , < 3.12.6 (custom) Affected: 3.13.0a1 , < 3.13.0rc2 (custom) cpe:2.3:a:python:cpython:*:*:*:*:*:*:*:* |
Credits
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CVE-2024-7779 (GCVE-0-2024-7779)
Vulnerability from cvelistv5 – Published: 2025-03-20 10:08 – Updated: 2025-10-15 12:50
VLAI
Title
ReDoS (Regular Expression Denial of Service) in danswer-ai/danswer
Summary
A vulnerability in danswer-ai/danswer version 1 allows an attacker to perform a Regular Expression Denial of Service (ReDoS) by manipulating regular expressions. This can significantly slow down the application's response time and potentially render it completely unusable.
Severity
7.5 (High)
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-1333 - Inefficient Regular Expression Complexity
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| danswer-ai | danswer-ai/danswer |
Affected:
unspecified , ≤ latest
(custom)
|
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Mitigation
Phase: Architecture and Design
Description:
- Use regular expressions that do not support backtracking, e.g. by removing nested quantifiers.
Mitigation
Phase: System Configuration
Description:
- 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
Phase: Implementation
Description:
- Do not use regular expressions with untrusted input. If regular expressions must be used, avoid using backtracking in the expression.
Mitigation
Phase: Implementation
Description:
- 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.