Bug 2564924 - CVE-2026-119566 alertmanager: Prometheus: Information disclosure via HTTP redirects in remote write requests [fedora-44]
Summary: CVE-2026-119566 alertmanager: Prometheus: Information disclosure via HTTP red...
Keywords:
Status: ON_QA
Alias: None
Product: Fedora
Classification: Fedora
Component: alertmanager
Version: 44
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 10:14 UTC by Ronit Dey
Modified: 2026-11-03 02:58 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 10:14:56 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 21:02:38 UTC
FEDORA-2026-9028005172 (alertmanager-0.34.2-1.fc45) has been submitted as an update to Fedora 45.
https://bodhi.fedoraproject.org/updates/FEDORA-2026-9028005172

Comment 2 Fedora Update System 2026-11-02 21:02:52 UTC
FEDORA-2026-95362fedd2 (alertmanager-0.34.2-1.fc44) has been submitted as an update to Fedora 44.
https://bodhi.fedoraproject.org/updates/FEDORA-2026-95362fedd2

Comment 3 Fedora Update System 2026-11-03 02:27:28 UTC
FEDORA-2026-9028005172 has been pushed to the Fedora 45 testing repository.
Soon you'll be able to install the update with the following command:
`sudo dnf upgrade --enablerepo=updates-testing --refresh --advisory=FEDORA-2026-9028005172`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-9028005172

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

Comment 4 Fedora Update System 2026-11-03 02:58:48 UTC
FEDORA-2026-95362fedd2 has been pushed to the Fedora 44 testing repository.
Soon you'll be able to install the update with the following command:
`sudo dnf upgrade --enablerepo=updates-testing --refresh --advisory=FEDORA-2026-95362fedd2`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-95362fedd2

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


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