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6.5 Medium

CVE-2026-90439 NGINX Plus and NGINX Open Source have a vulnerability in the ngx_http_v3_module module

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.

Affected products and versions

Product Affected versions Fixed in
NGINX Plus 37.1 37.1.0.1 → < 37.1.1.2 37.1.1.2
NGINX Plus 37.0 37.0.0.1 → < 37.0.6.2 37.0.6.2
NGINX Open Source 1.30 1.30.4 → < 1.30.5 1.30.5
NGINX Open Source 1.29 1.29.2 → < 1.31.6 1.31.6

References

Timeline

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Other CVEs of NGINX Plus

The 37 CVEs of NGINX Plus →
CVE-2026-95101 Description NGINX Plus and NGINX Open Source have a vulnerability in the ngx_http_v3_module module 5.3 Medium CVE-2026-93479 A vulnerability exists in NGINX Plus and NGINX Open Source when a map directive uses regex matching and the root… 8.1 High CVE-2026-97205 NGINX Plus and NGINX Open Source have a vulnerability in the ngx_http_core_module module 8.1 High CVE-2026-15176 A vulnerability exists in NGINX Plus and NGINX Open Source when a location is configured that uses the alias directive… 8.1 High
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