PT-2022-7276 · Nekohtml+4 · Nekohtml+5

Published 2022-04-11 · Updated 2026-03-13 · CVE-2022-24839

Positive Technologies (AI Summary)

CVSS v2.0

7.8

High

Base vector

AV:N/AC:L/Au:N/C:N/I:N/A:C

Name of the Vulnerable Software and Affected Versions Nokogiri versions prior to 1.9.22.noko2

Description The issue is related to uncontrolled resource consumption when parsing ill-formed HTML markup, which can lead to a java.lang.OutOfMemoryError exception. This can be exploited by a remote attacker to cause a denial of service. The upstream library org.cyberneko.html is no longer maintained, and the vulnerability applies only to the fork used by Nokogiri, located at https://github.com/sparklemotion/nekohtml.

Recommendations Upgrade to version >= 1.9.22.noko2 to resolve the issue. As a temporary workaround, consider restricting the use of the vulnerable HTML parser until a patch is available. Avoid parsing ill-formed HTML markup to minimize the risk of exploitation.

Exploit

Fix

Resource Exhaustion

Weakness Enumeration

CWE-400

Related Identifiers

ALSA-2025_16880

ALT-PU-2022-2027

ALT-PU-2023-4266

ALT-PU-2024-7812

BDU:2024-01887

CVE-2022-24839

GHSA-9849-P7JC-9RMV

GHSA-GX8X-G87M-H5Q6

OESA-2022-1636

OPENSUSE-SU-2024:11999-1

OPENSUSE-SU-2024:13165-1

OPENSUSE-SU-2024:14174-1

OPENSUSE-SU-2025:14697-1

OPENSUSE-SU-2026:10356-1

Affected Products

Alt Linux

Debian

Jira

Jira Service Management Server

Nokogiri

Nekohtml

References · 77

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/24xxx/CVE-2022-24839.json · Exploit
• https://github.com/sparklemotion/nekohtml/security/advisories/GHSA-9849-p7jc-9rmv · Vendor Advisory
• https://github.com/sparklemotion/nekohtml/commit/a800fce3b079def130ed42a408ff1d09f89e773d · Patch
• https://osv.dev/vulnerability/DEBIAN-CVE-2022-24839 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2026:10356-1 · Vendor Advisory
• https://bdu.fstec.ru/vul/2024-01887 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2022-24839 · Security Note
• https://oracle.com/security-alerts/cpujul2022.html · Patch
• https://cve.org/CVERecord?id=CVE-2022-24839 · Security Note
• https://osv.dev/vulnerability/GHSA-gx8x-g87m-h5q6 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2022-24839 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2024:11999-1 · Vendor Advisory
• https://osv.dev/vulnerability/OESA-2022-1636 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2022-24839 · Vendor Advisory
• https://osv.dev/vulnerability/GHSA-9849-p7jc-9rmv · Vendor Advisory