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path-to-regexp Unpatched `path-to-regexp` ReDoS in 0.1.x

CVSS 4.0 7.7 HIGHEUVD CVSS 4.0 7.7 CVSS 4.0 · [email protected] · Secondary 7.7 HIGHCVSS_V3 CVSS_V4 Publisher rating HIGHFixed by path-to-regexp 0.1.12KEV status unknown

cve-program · CVE-2024-52798

Published

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.

Read the publisher's advisory

euvd · EUVD-2024-3506

Published

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.

Read the publisher's advisory

nvd · CVE-2024-52798

Published

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.

Read the publisher's advisory

osv · GHSA-rhx6-c78j-4q9w

Published

### Impact The regular expression that is vulnerable to backtracking can be generated in versions before 0.1.12 of `path-to-regexp`, originally reported in CVE-2024-45296 ### Patches Upgrade to 0.1.12. ### Workarounds Avoid using two parameters within a single path segment, when the separator is not `.` (e.g. no `/:a-:b`). Alternatively, you can define the regex used for both parameters and ensure they do not overlap to allow backtracking. ### References - https://github.com/advisories/GHSA-9wv6-86v2-598j - https://blakeembrey.com/posts/2024-09-web-redos/

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Affected versions, risk and source history

Exploitation and risk

Source status

CISA KEV lists vulnerabilities known to be exploited. FIRST EPSS estimates the likelihood of exploitation in the next 30 days. An unavailable score does not mean zero risk.

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Risk history

Compare earlier KEV listings and daily EPSS scores. Advisory wording and affected versions have a separate history.

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Advisory history

13 saved versions

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15 Nov 2026 02:36:42 UTC

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 b…

euvd · EUVD-2024-3506 · Published

13 Nov 2026 02:25:05 UTC

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 b…

euvd · EUVD-2024-3506 · Published

11 Nov 2026 01:36:35 UTC

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 b…

euvd · EUVD-2024-3506 · Published

9 Nov 2026 01:09:53 UTC

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 b…

euvd · EUVD-2024-3506 · Published

7 Nov 2026 00:34:54 UTC

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 b…

euvd · EUVD-2024-3506 · Published

5 Nov 2026 00:01:38 UTC

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 b…

euvd · EUVD-2024-3506 · Published

2 Nov 2026 23:02:35 UTC

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 b…

euvd · EUVD-2024-3506 · Published

31 Oct 2026 22:11:21 UTC

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 b…

euvd · EUVD-2024-3506 · Published

29 Oct 2026 21:21:43 UTC

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 b…

euvd · EUVD-2024-3506 · Published

27 Oct 2026 20:54:22 UTC

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 b…

euvd · EUVD-2024-3506 · Published

25 Oct 2026 01:17:12 UTC

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 b…

nvd · CVE-2024-52798 · Published

23 Oct 2026 15:48:27 UTC

path-to-regexp Unpatched `path-to-regexp` ReDoS in 0.1.x

cve-program · CVE-2024-52798 · Published

ChangeIntel

An IT change radar: releases, security, known issues, retirements, documentation changes, and service status from public sources. Every item links to supporting evidence; dates and statuses can change after they are read.

Sources read 15 Nov 12:11 UTC · 256 of 275 readable · 252 fully read · documentation 469/469 current