CVE-2022-24836

Name: CVE-2022-24836
Creator: NVD / NIST
Published: 2022-04-11T22:15:07.347+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 3.35%

Last modified Jun 17, 2026

CVE-2022-24836 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. 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. EPSS estimates a 3.35% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1

7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS Probability

3.35%

87.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Nokogiri	Nokogiri	< 1.13.4
Fedoraproject	Fedora	34
Fedoraproject	Fedora	35
Fedoraproject	Fedora	36
Debian	Debian Linux	9.0
Debian	Debian Linux	10.0
Apple	Macos	>= 13.0, < 13.1

References

http://seclists.org/fulldisclosure/2022/Dec/23Mailing List, Third Party Advisory
https://github.com/sparklemotion/nokogiri/commit/e444525ef1634b675cd1cf52d39f4320ef0aecfdPatch, Third Party Advisory
https://github.com/sparklemotion/nokogiri/security/advisories/GHSA-crjr-9rc5-ghw8Third Party Advisory
https://lists.debian.org/debian-lts-announce/2022/05/msg00013.htmlMailing List, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2022/10/msg00018.htmlMailing List, Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6DHCOWMA5PQTIQIMDENA7R2Y5BDYAIYM/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OUPLBUZVM4WPFSXBEP2JS3R6LMKRTLFC/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XMDCWRQXJQ3TFSETPCEFMQ6RR6ME5UA3/
https://security.gentoo.org/glsa/202208-29Third Party Advisory
https://support.apple.com/kb/HT213532Third Party Advisory
http://seclists.org/fulldisclosure/2022/Dec/23Mailing List, Third Party Advisory
https://github.com/sparklemotion/nokogiri/commit/e444525ef1634b675cd1cf52d39f4320ef0aecfdPatch, Third Party Advisory
https://github.com/sparklemotion/nokogiri/security/advisories/GHSA-crjr-9rc5-ghw8Third Party Advisory
https://lists.debian.org/debian-lts-announce/2022/05/msg00013.htmlMailing List, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2022/10/msg00018.htmlMailing List, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2024/09/msg00010.html
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6DHCOWMA5PQTIQIMDENA7R2Y5BDYAIYM/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OUPLBUZVM4WPFSXBEP2JS3R6LMKRTLFC/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XMDCWRQXJQ3TFSETPCEFMQ6RR6ME5UA3/
https://security.gentoo.org/glsa/202208-29Third Party Advisory
https://support.apple.com/kb/HT213532Third Party Advisory

Timeline

Published: Apr 11, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2022-24836?

How severe is CVE-2022-24836?

CVE-2022-24836 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 3.35% probability of exploitation in the next 30 days.

How do I fix CVE-2022-24836?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2022-24836?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST