CVE-2026-73196
A flaw was found in FreeIPA. A low-privilege authenticated user can exploit this vulnerability by submitting an oversized One-Time Password (OTP) key value. This oversized key is then decoded and re-encoded without proper size limits, consuming excessive CPU and memory resources. This can lead to a denial of service, degrading the availability of the IPA service.
- Affected products
- Freeipa
- Redhat Enterprise Linux
- = 6.0, 7.0, 8.0, 9.0, 10.0
- CVSS 3.1
- 6.5 MEDIUM
- EPSS
- 0.2% (15th percentile)
- Weakness
- CWE-770
- NVD status
- Analyzed
- Published
- 2026-08-20
Workaround
To mitigate this issue, enforce conservative HTTP request-body limits on the `/ipa/session/json` endpoint to reject oversized payloads before they reach the vulnerable IPA parameter conversion. Additionally, if operationally feasible, restrict self-managed token creation to trusted users and implement monitoring or rate-limiting for repeated large authenticated requests. Changes to HTTP server configurations or FreeIPA permissions may require service restarts or reloads to take effect.
No indexed exploits for CVE-2026-73196 yet
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No exploit for CVE-2026-73196 has been indexed yet. Our index is built from live traffic and upstream syncs, so this page can only say what it knows — not that no exploit exists.