CWE-1333— Inefficient Regular Expression Complexity (ReDoS)
The product uses a regular expression with a worst-case computational complexity that is inefficient and possibly exponential.— MITRE CWE catalog
608 active CVEs classified under this weakness category. Sourced from NVD, GHSA, and vendor advisories. Full definition on MITRE →
CVEs classified under CWE-1333page 11 of 13
- CVE-2025-3264MEDIUMCVSS 5.3EG 5.32025-07-07
A Regular Expression Denial of Service (ReDoS) vulnerability was discovered in the Hugging Face Transformers library, specifically in the `get_imports()` function within `dynamic_module_utils.py`. This vulnerability affects versions 4.49.0…
- CVE-2025-3263MEDIUMCVSS 5.3EG 5.32025-07-07
A Regular Expression Denial of Service (ReDoS) vulnerability was discovered in the Hugging Face Transformers library, specifically in the `get_configuration_file()` function within the `transformers.configuration_utils` module. The affecte…
- CVE-2025-6493MEDIUMCVSS 5.3EG 5.32025-06-22
A weakness has been identified in CodeMirror up to 5.65.20. Affected is an unknown function of the file mode/markdown/markdown.js of the component Markdown Mode. This manipulation causes inefficient regular expression complexity. It is pos…
- CVE-2025-6492MEDIUMCVSS 5.3EG 5.32025-06-22
A vulnerability has been found in MarkText up to 0.17.1 and classified as problematic. Affected by this vulnerability is the function getRecommendTitleFromMarkdownString of the file marktext/src/main/utils/index.js. The manipulation leads …
- CVE-2025-5891MEDIUMCVSS 5.3EG 5.32025-06-09
A vulnerability classified as problematic was found in Unitech pm2 up to 6.0.6. This vulnerability affects unknown code of the file /lib/tools/Config.js. The manipulation leads to inefficient regular expression complexity. The attack can b…
- CVE-2025-49007MEDIUMCVSS 5.3EG 5.32025-06-04
Rack is a modular Ruby web server interface. Starting in version 3.1.0 and prior to version 3.1.16, there is a denial of service vulnerability in the Content-Disposition parsing component of Rack. This is very similar to the previous secur…
- CVE-2025-24026MEDIUMCVSS 5.3EG 5.32025-05-14
iTop is an web based IT Service Management tool. Versions prior to 3.2.1 are vulnerable to regular expression denial of service (ReDoS) that may, under some circumstances, affect iTop server. Version 3.2.1 doesn't use the affected variable…
- CVE-2025-2833MEDIUMCVSS 5.3EG 5.32025-03-27
A vulnerability was found in zhangyd-c OneBlog up to 2.3.9. It has been classified as problematic. Affected is an unknown function of the component HTTP Header Handler. The manipulation of the argument X-Forwarded-For leads to inefficient …
- CVE-2025-25290MEDIUMCVSS 5.3EG 5.32025-02-14
@octokit/request sends parameterized requests to GitHub’s APIs with sensible defaults in browsers and Node. Starting in version 1.0.0 and prior to versions 9.2.1 and 8.4.1, the regular expression `/<([^>]+)>; rel="deprecation"/` used to …
- CVE-2025-25289MEDIUMCVSS 5.3EG 5.32025-02-14
@octokit/request-error is an error class for Octokit request errors. Starting in version 1.0.0 and prior to version 6.1.7, a Regular Expression Denial of Service (ReDoS) vulnerability exists in the processing of HTTP request headers. By se…
- CVE-2025-25288MEDIUMCVSS 5.3EG 5.32025-02-14
@octokit/plugin-paginate-rest is the Octokit plugin to paginate REST API endpoint responses. For versions starting in 1.0.0 and prior to 11.4.1 of the npm package `@octokit/plugin-paginate-rest`, when calling `octokit.paginate.iterator()`,…
- CVE-2025-25285MEDIUMCVSS 5.3EG 5.32025-02-14
@octokit/endpoint turns REST API endpoints into generic request options. Starting in version 4.1.0 and prior to version 10.1.3, by crafting specific `options` parameters, the `endpoint.parse(options)` call can be triggered, leading to a re…
- CVE-2024-45338MEDIUMCVSS 5.3EG 5.32024-12-18
An attacker can craft an input to the Parse functions that would be processed non-linearly with respect to its length, resulting in extremely slow parsing. This could cause a denial of service.
- CVE-2024-50574MEDIUMCVSS 5.3EG 5.32024-10-28
In JetBrains YouTrack before 2024.3.47707 potential ReDoS exploit was possible via email header parsing in Helpdesk functionality
- CVE-2024-38809MEDIUMCVSS 5.3EG 5.32024-09-27
Applications that parse ETags from "If-Match" or "If-None-Match" request headers are vulnerable to DoS attack. Users of affected versions should upgrade to the corresponding fixed version. Users of older, unsupported versions could enfor…
- CVE-2024-4067MEDIUMCVSS 5.3EG 5.32024-05-14
The NPM package `micromatch` prior to 4.0.8 is vulnerable to Regular Expression Denial of Service (ReDoS). The vulnerability occurs in `micromatch.braces()` in `index.js` because the pattern `.*` will greedily match anything. By passing a …
- CVE-2024-21503MEDIUMCVSS 5.3EG 5.32024-03-19
Versions of the package black before 24.3.0 are vulnerable to Regular Expression Denial of Service (ReDoS) via the lines_with_leading_tabs_expanded function in the strings.py file. An attacker could exploit this vulnerability by crafting a…
- CVE-2024-27351MEDIUMCVSS 5.3EG 5.32024-03-15
In Django 3.2 before 3.2.25, 4.2 before 4.2.11, and 5.0 before 5.0.3, the django.utils.text.Truncator.words() method (with html=True) and the truncatewords_html template filter are subject to a potential regular expression denial-of-servic…
- CVE-2024-26146MEDIUMCVSS 5.3EG 5.32024-02-29
Rack is a modular Ruby web server interface. Carefully crafted headers can cause header parsing in Rack to take longer than expected resulting in a possible denial of service issue. Accept and Forwarded headers are impacted. Ruby 3.2 has m…
- CVE-2023-26364MEDIUMCVSS 5.3EG 5.32023-11-17
@adobe/css-tools version 4.3.0 and earlier are affected by an Improper Input Validation vulnerability that could result in a minor denial of service while attempting to parse CSS. Exploitation of this issue does not require user interactio…
- CVE-2023-3446MEDIUMCVSS 5.3EG 5.32023-07-19
Issue summary: Checking excessively long DH keys or parameters may be very slow. Impact summary: Applications that use the functions DH_check(), DH_check_ex() or EVP_PKEY_param_check() to check a DH key or DH parameters may experience lon…
- CVE-2023-36617MEDIUMCVSS 5.3EG 5.32023-06-29
A ReDoS issue was discovered in the URI component before 0.12.2 for Ruby. The URI parser mishandles invalid URLs that have specific characters. There is an increase in execution time for parsing strings to URI objects with rfc2396_parser.r…
- CVE-2023-26115MEDIUMCVSS 5.3EG 5.32023-06-22
All versions of the package word-wrap are vulnerable to Regular Expression Denial of Service (ReDoS) due to the usage of an insecure regular expression within the result variable.
- CVE-2023-1894MEDIUMCVSS 5.3EG 5.32023-05-04
A Regular Expression Denial of Service (ReDoS) issue was discovered in Puppet Server 7.9.2 certificate validation. An issue related to specifically crafted certificate names significantly slowed down server operations.
- CVE-2023-30858MEDIUMCVSS 5.3EG 5.32023-04-28
The Denosaurs emoji package provides emojis for dinosaurs. Starting in version 0.1.0 and prior to version 0.3.0, the reTrimSpace regex has 2nd degree polynomial inefficiency, leading to a delayed response given a big payload. The issue has…
- CVE-2023-26118MEDIUMCVSS 5.3EG 5.32023-03-30
Versions of the package angular from 1.4.9 are vulnerable to Regular Expression Denial of Service (ReDoS) via the <input type="url"> element due to the usage of an insecure regular expression in the input[url] functionality. Exploiting thi…
- CVE-2023-26117MEDIUMCVSS 5.3EG 5.32023-03-30
Versions of the package angular from 1.0.0 are vulnerable to Regular Expression Denial of Service (ReDoS) via the $resource service due to the usage of an insecure regular expression. Exploiting this vulnerability is possible by a large ca…
- CVE-2023-26116MEDIUMCVSS 5.3EG 5.32023-03-30
Versions of the package angular from 1.2.21 are vulnerable to Regular Expression Denial of Service (ReDoS) via the angular.copy() utility function due to the usage of an insecure regular expression. Exploiting this vulnerability is possibl…
- CVE-2023-26103MEDIUMCVSS 5.3EG 5.32023-02-25
Versions of the package deno before 1.31.0 are vulnerable to Regular Expression Denial of Service (ReDoS) due to the upgradeWebSocket function, which contains regexes in the form of /s*,s*/, used for splitting the Connection/Upgrade header…
- CVE-2022-25901MEDIUMCVSS 5.3EG 5.32023-01-18
Versions of the package cookiejar before 2.1.4 are vulnerable to Regular Expression Denial of Service (ReDoS) via the Cookie.parse function, which uses an insecure regular expression.
- CVE-2017-20162MEDIUMCVSS 5.3EG 5.32023-01-05
A vulnerability, which was classified as problematic, has been found in vercel ms up to 1.x. This issue affects the function parse of the file index.js. The manipulation of the argument str leads to inefficient regular expression complexit…
- CVE-2022-31110MEDIUMCVSS 5.3EG 5.32022-06-29
RSSHub is an open source, extensible RSS feed generator. In commits prior to 5c4177441417 passing some special values to the `filter` and `filterout` parameters can cause an abnormally high CPU. This results in an impact on the performance…
- CVE-2022-21195MEDIUMCVSS 5.3EG 5.32022-05-20
All versions of package url-regex are vulnerable to Regular Expression Denial of Service (ReDoS) which can cause the CPU usage to crash.
- CVE-2022-25844MEDIUMCVSS 5.3EG 5.32022-05-01
The package angular after 1.7.0 are vulnerable to Regular Expression Denial of Service (ReDoS) by providing a custom locale rule that makes it possible to assign the parameter in posPre: ' '.repeat() of NUMBER_FORMATS.PATTERNS[1].posPre wi…
- CVE-2022-21670MEDIUMCVSS 5.3EG 5.32022-01-10
markdown-it is a Markdown parser. Prior to version 1.3.2, special patterns with length greater than 50 thousand characterss could slow down the parser significantly. Users should upgrade to version 12.3.2 to receive a patch. There are no k…
- CVE-2021-43843MEDIUMCVSS 5.3EG 5.32021-12-20
jsx-slack is a package for building JSON objects for Slack block kit surfaces from JSX. The maintainers found the patch for CVE-2021-43838 in jsx-slack v4.5.1 is insufficient tfor protection from a Regular Expression Denial of Service (ReD…
- CVE-2021-43838MEDIUMCVSS 5.3EG 5.32021-12-17
jsx-slack is a library for building JSON objects for Slack Block Kit surfaces from JSX. In versions prior to 4.5.1 users are vulnerable to a regular expression denial-of-service (ReDoS) attack. If attacker can put a lot of JSX elements int…
- CVE-2021-23364MEDIUMCVSS 5.3EG 5.32021-04-28
The package browserslist from 4.0.0 and before 4.16.5 are vulnerable to Regular Expression Denial of Service (ReDoS) during parsing of queries.
- CVE-2021-23382MEDIUMCVSS 5.3EG 5.32021-04-26
The package postcss before 8.2.13 are vulnerable to Regular Expression Denial of Service (ReDoS) via getAnnotationURL() and loadAnnotation() in lib/previous-map.js. The vulnerable regexes are caused mainly by the sub-pattern \/\*\s* source…
- CVE-2021-23362MEDIUMCVSS 5.3EG 5.32021-03-23
The package hosted-git-info before 3.0.8 are vulnerable to Regular Expression Denial of Service (ReDoS) via regular expression shortcutMatch in the fromUrl function in index.js. The affected regular expression exhibits polynomial worst-cas…
- CVE-2020-28500MEDIUMCVSS 5.3EG 5.32021-02-15
Lodash versions prior to 4.17.21 are vulnerable to Regular Expression Denial of Service (ReDoS) via the toNumber, trim and trimEnd functions.
- CVE-2016-1000232MEDIUMCVSS 5.3EG 5.32018-09-05
NodeJS Tough-Cookie version 2.2.2 contains a Regular Expression Parsing vulnerability in HTTP request Cookie Header parsing that can result in Denial of Service. This attack appear to be exploitable via Custom HTTP header passed by client.…
- CVE-2022-4131MEDIUMCVSS 4.3EG 5.32023-01-12
An issue has been discovered in GitLab CE/EE affecting all versions starting from 10.8 before 15.5.7, all versions starting from 15.6 before 15.6.4, all versions starting from 15.7 before 15.7.2. An attacker may cause Denial of Service on …
- CVE-2022-3514MEDIUMCVSS 4.3EG 5.32023-01-12
An issue has been discovered in GitLab CE/EE affecting all versions starting from 6.6 before 15.5.7, all versions starting from 15.6 before 15.6.4, all versions starting from 15.7 before 15.7.2. An attacker may cause Denial of Service on a…
- CVE-2022-1954MEDIUMCVSS 4.3EG 5.32022-07-01
A Regular Expression Denial of Service vulnerability in GitLab CE/EE affecting all versions from 1.0.2 prior to 14.10.5, 15.0 prior to 15.0.4, and 15.1 prior to 15.1.1 allows an attacker to make a GitLab instance inaccessible via specially…
- CVE-2022-34428MEDIUMCVSS 5.0EG 5.02022-09-30
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.
- CVE-2009-1190MEDIUMCVSS v2 5.0EG 5.02009-04-27
Algorithmic complexity vulnerability in the java.util.regex.Pattern.compile method in Sun Java Development Kit (JDK) before 1.6, when used with spring.jar in SpringSource Spring Framework 1.1.0 through 2.5.6 and 3.0.0.M1 through 3.0.0.M2 a…
- CVE-2026-110594MEDIUMCVSS 4.9EG 4.92026-10-14
BottleCRM 0.43 through 1.14.5 contains a regular expression denial of service vulnerability that allows authenticated organization administrators to block web workers via unbounded routing rule regex patterns. Attackers can create a routin…
- CVE-2026-105646MEDIUMCVSS 4.9EG 4.92026-10-05
Ghost is a Node.js content management system. From 4.0.0 until 6.67.0, a crafted content import file could cause excessive CPU usage, making the Ghost server unresponsive. Exploiting this requires Administrator access. This issue is fixed …
- CVE-2026-105645MEDIUMCVSS 4.9EG 4.92026-10-05
Ghost is a Node.js content management system. From 5.37.0 until 6.67.0, a crafted request to the external media inliner could cause excessive CPU usage, making the Ghost server unresponsive. Exploiting this requires Administrator access. T…
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