CVE-2026-90439
CVE CVE-2026-90439EUVD EUVD-2026-78585Published 2026-09-15T14:27:26.000ZLast changed 2026-09-16T15:09:43.000ZCVSS 6.9
What the advisory describes
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.
Source: EUVD (ENISA), in the words of the advisory.
Products the advisory names
These come from the advisory itself, not from any check we performed.
- F5 — NGINX Open Source 1.29.2 <1.31.6; 1.30.4 <1.30.5
- F5 — NGINX Plus 37.1.0.1 <37.1.1.2; 37.0.0.1 <37.0.6.2
The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.
Carried in the product catalogue
An estate covering these products can be recorded in Patchlage. An advisory about them appears in the next morning's situation report.
- F5 — NGINX Open Source
- F5 — NGINX Plus
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