CVE-2025-11065

Name	CVE-2025-11065
Description	A flaw was found in github.com/go-viper/mapstructure/v2, in the field processing component using mapstructure.WeakDecode. This vulnerability allows information disclosure through detailed error messages that may leak sensitive input values via malformed user-supplied data processed in security-critical contexts.
Source	CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
Debian Bugs	1116584

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
golang-github-go-viper-mapstructure (PTS)	trixie	2.2.1-1	vulnerable
	forky, sid	2.4.0-1	fixed

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
golang-github-go-viper-mapstructure	source	(unstable)	2.4.0-1			1116584

Notes

[trixie] - golang-github-go-viper-mapstructure <no-dsa> (Minor issue)
https://bugzilla.redhat.com/show_bug.cgi?id=2391829
https://github.com/go-viper/mapstructure/security/advisories/GHSA-2464-8j7c-4cjm
https://github.com/go-viper/mapstructure/commit/742921c9ba2854d27baa64272487fc5075d2c39c (v2.4.0)