This page tracks the Debian fix status. The vulnerability itself is described on the main CVE page. View CVE-2026-57236 →

DEBIAN-CVE-2026-57236

Nokogiri is an open source XML and HTML library for the Ruby programming language. Prior to 1.19.4, calling Document#encoding= with an invalid encodin...

Original description

The description as published by the source.

Nokogiri is an open source XML and HTML library for the Ruby programming language. Prior to 1.19.4, calling Document#encoding= with an invalid encoding (e.g., a non-string, or a string containing a null byte) raises an exception, but only after freeing the document's current encoding string without replacing it. The document is left referencing freed memory, so the next call to Document#encoding reads invalid memory, which can cause a segfault or leak freed bytes into a Ruby String. Affects the CRuby (libxml2) implementation only; JRuby is not affected. This vulnerability is fixed in 1.19.4.

Source: OSV.dev (Open Source Vulnerabilities) OSV

Affected packages

Debian:12 ruby-nokogiri

[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]

Debian:13 ruby-nokogiri

[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]

Debian:14 ruby-nokogiri

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.19.4+dfsg-1"}]}]

References

advisory security-tracker.debian.org