CVE-2026-120971

NameCVE-2026-120971
DescriptionA flaw was found in RESTEasy's default exception mapper. When an unhandled exception other than a WebApplicationException is not handled by an application exception mapper, RESTEasy returns the exception's localized message in the HTTP 500 response body. A remote unauthenticated attacker who can trigger such an exception may obtain information contained in that message. The behavior was reproduced with RESTEasy 7.0.2.Final.
SourceCVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
resteasy (PTS)sid3.6.2-4vulnerable
resteasy3.0 (PTS)bookworm, forky, sid, trixie3.0.26-6vulnerable

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
resteasysource(unstable)(unfixed)
resteasy3.0source(unstable)(unfixed)

Notes

https://bugzilla.redhat.com/show_bug.cgi?id=2565584

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