CVE-2026-33551

Name	CVE-2026-33551
Description	An issue was discovered in OpenStack Keystone 14 through 26 before 26.1.1, 27.0.0, 28.0.0, and 29.0.0. Restricted application credentials can create EC2 credentials. By using a restricted application credential to call the EC2 credential creation API, an authenticated user with only a reader role may obtain an EC2/S3 credential that carries the full set of the parent user's S3 permissions, effectively bypassing the role restrictions imposed on the application credential. Only deployments that use restricted application credentials in combination with the EC2/S3 compatibility API (swift3 / s3api) are affected.
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	1133118

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
keystone (PTS)	bullseye	2:18.0.0-3+deb11u1	vulnerable
	bullseye (security)	2:18.1.0-1+deb11u2	vulnerable
	bookworm, bookworm (security)	2:22.0.2-0+deb12u1	vulnerable
	trixie (security), trixie	2:27.0.0-3+deb13u1	vulnerable
	forky, sid	2:29.0.1-1	fixed

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

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
keystone	source	(unstable)	2:29.0.0-2			1133118

Notes

[trixie] - keystone <no-dsa> (Minor issue)
[bookworm] - keystone <no-dsa> (Minor issue)
https://launchpad.net/bugs/2142138
https://www.openwall.com/lists/oss-security/2026/04/07/12