CVE-2026-54605

Name	CVE-2026-54605
Description	OAuth is a Ruby wrapper for the OAuth 1.0 and 1.0a protocols, providing clients and servers. From 0.5.5 to 1.1.5, OAuth::Consumer#token_request parses the raw Location header of a 300 to 399 redirect returned by the OAuth server and follows the redirect recursively, which can mutate the consumer's configuration and expose signed OAuth request metadata, including the Authorization header, to a cross-origin host. This issue is fixed in version 1.1.6.
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)

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
ruby-oauth (PTS)	bookworm, bullseye, trixie	0.5.4-1.1	fixed
	forky, sid	1.1.7-1	fixed

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

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
ruby-oauth	source	(unstable)	(not affected)

Notes

- ruby-oauth <not-affected> (Vulnerable code never in a Debian unstable released version)
https://github.com/ruby-oauth/oauth/security/advisories/GHSA-prq8-7wvh-44qh
Introduced with: https://github.com/ruby-oauth/oauth/commit/d74b767f464ee045cec75504974ff897b3dc0076 (v0.5.5)
Fixed by: https://github.com/ruby-oauth/oauth/commit/d069dc8c4c9631947451215f07460d6cdf0caf3f (v1.1.6)