Alerts This Week
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Alerts This Week
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Fedora 43 Alertmanager Important DoS Fix 2026-1ad4561f49

fedora
Calendar Grey June 20, 2026
Dist Fedora Esm H88
Fedora 43 alertmanager update resolves critical denial of service issue. Install now for improved service stability.
Update to 0.33.0

Summary

The Alertmanager handles alerts sent by client applications such as the

Prometheus server. It takes care of deduplicating, grouping, and routing them to

the correct receiver integrations such as email, PagerDuty, or OpsGenie. It also

takes care of silencing and inhibition of alerts.

Update Information:

Update to 0.33.0

Topics%20covered

Topics Covered

security advisory denial of service fedora update important alertmanager

Change Log

* Fri Jun 12 2026 Mikel Olasagasti Uranga - 0.33.0-1 - Update to 0.33.0 - Closes rhbz#2485517

References


[ 1 ] Bug #2486249 - CVE-2026-45287 alertmanager: OpenTelemetry-Go: Denial of Service due to file descriptor leak [fedora-all] https://bugzilla.redhat.com/show_bug.cgi?id=2486249

Update Instructions

This update can be installed with the "dnf" update program. Use su -c 'dnf upgrade --advisory FEDORA-2026-1ad4561f49' at the command line. For more information, refer to the dnf documentation available at http://dnf.readthedocs.io/en/latest/command_ref.html#upgrade-command-label

Severity
important
Lowest
Low
Medium
High
Critical

Name: alertmanager
Product: Fedora 43
Version: 0.33.0
Release: 1.fc43
URL: https://github.com/prometheus/alertmanager
Summary: Prometheus Alertmanager

Topics%20covered

Topics Covered

security advisory denial of service fedora update important alertmanager

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