Bug 2564914 - CVE-2026-119566 alertmanager: Prometheus: Information disclosure via HTTP redirects in remote write requests [epel-9]
Summary: CVE-2026-119566 alertmanager: Prometheus: Information disclosure via HTTP red...
Keywords:
Status: ON_QA
Alias: None
Product: Fedora EPEL
Classification: Fedora
Component: alertmanager
Version: epel9
Hardware: Unspecified
OS: Unspecified
medium
medium
Target Milestone: ---
Assignee: Mikel Olasagasti Uranga
QA Contact:
URL:
Whiteboard: {"flaws": ["25196e4a-5954-423a-a8be-c...
Depends On:
Blocks: CVE-2026-119566
TreeView+ depends on / blocked
 
Reported: 2026-11-02 10:10 UTC by Ronit Dey
Modified: 2026-11-03 03:13 UTC (History)
2 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Type: ---
Embargoed:


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Description Ronit Dey 2026-11-02 10:10:39 UTC
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.

Prometheus through 3.15.1 contains a credential leak vulnerability that allows attackers to capture Azure AD or Google IAM bearer tokens by redirecting remote_write requests to another host. Attackers controlling the remote-write endpoint or a redirecting server can return a 3xx to their host and replay the token, for example to write metrics to the victim's backend.

Comment 1 Fedora Update System 2026-11-02 21:07:21 UTC
FEDORA-EPEL-2026-641d74bc90 (alertmanager-0.34.2-1.el9) has been submitted as an update to Fedora EPEL 9.
https://bodhi.fedoraproject.org/updates/FEDORA-EPEL-2026-641d74bc90

Comment 2 Fedora Update System 2026-11-03 03:13:38 UTC
FEDORA-EPEL-2026-641d74bc90 has been pushed to the Fedora EPEL 9 testing repository.

You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-EPEL-2026-641d74bc90

See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.


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