CVE-2026-79772

ruby-nokogiri: Nokogiri versions before 1.19.1 fail to check the return value from xmlC14NExecute in the canonicalize method, return...

CVE-2026-79772 is fixed in ruby-nokogiri on 1 platform by DEBIAN-CVE-2026-79772 (version 1.19.1+dfsg-1), released August 27, 2026. It is not reported as exploited. Patch Radar priority: Routine.

Routine

CVSS

n/a

No vendor severity

Exploitation

None reported

No vendor assessment

CISA KEV

Not listed

Not in the Known Exploited Vulnerabilities catalog

EPSS

0.0034

27th percentile

Nokogiri versions before 1.19.1 fail to check the return value from xmlC14NExecute in the canonicalize method, returning an empty string on failure instead of raising an exception. Attackers can exploit this to bypass signature validation in downstream SAML libraries by providing invalid canonicalized XML that is incorrectly accepted as valid.

Where it's fixed

Product	Fixed in	Fix	Released
Linux
ruby-nokogiri · Debian 14	1.19.1+dfsg-1	DEBIAN-CVE-2026-79772	Aug 27, 2026

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