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Red Hat Security Advisory

RHSA-2026:0093

mod_md security update

Released 2026-01-06 · Red Hat rating Important · View on Red Hat →

Fixed in

Fixes 1 record

Priority LOW 33

An integer overflow in the case of failed ACME certificate renewal leads, after a number of failures (~30 days in default configurations), to the backoff timer becoming 0.

CVSS 3.1HIGH 7.5 Network No auth No interaction EPSS 0.00483 Published 2025-12-05 Fixed in 2.4.66 CWE-190