CVE-2026-90439
Description
NGINX Plus and NGINX Open Source have a vulnerability in the ngx_http_v3_module module. When using HTTP/3 with OpenSSL versions <= OpenSSL 3.5.0 under certain configurations, a limited heap buffer overflow could happen while processing a TLS handshake. This can happen in a non-deterministic manner that is beyond the attacker's control. This may cause a heap buffer overflow in the NGINX worker process leading to a restart and/or limited data corruption. Impact: This vulnerability may allow remote attackers to cause a denial-of-service (DoS) on the NGINX system or limited data corruption. There is no control plane exposure; this is a data plane issue only. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
How to fix
- F5 NGINX Plus37.1.1.2, 37.0.6.2 or later
- F5 NGINX Open Source1.31.6, 1.30.5 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| F5 NGINX Plus | 37.1.0.1 ≤ v < 37.1.1.2, 37.0.0.1 ≤ v < 37.0.6.2 | 37.1.1.2, 37.0.6.2 |
| F5 NGINX Open Source | 1.29.2 ≤ v < 1.31.6, 1.30.4 ≤ v < 1.30.5 | 1.31.6, 1.30.5 |
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