CVE-2026-73198: Ipa: freeipa: unauthenticated dos in `/ipa/i18n_messages` via unbounded request body read

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.5% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-08-20 · updated 2026-10-27
Weakness: CWE-770

Description

A flaw was found in FreeIPA. A remote, unauthenticated attacker can exploit a vulnerability in the `/ipa/i18n_messages` endpoint by sending an arbitrarily large request body. This can cause the service to consume excessive memory, leading to memory exhaustion, degraded responsiveness, and a denial of service (DoS) condition.

Affected products

FreeIPA ipa: before 4.13.3 — fixed in 4.13.3
Red Hat Enterprise Linux: 6.0, 7.0, 8.0, 9.0, 10.0

How to fix

Upgrade to a fixed version: FreeIPA ipa 4.13.3. Check the vendor advisory for mitigations.

References

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