CVE-2026-90439
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L
Summary
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 Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| F5 | NGINX Plus | 37.1.0.1 < 37.1.1.1 | affected |
| F5 | NGINX Plus | 37.0.0.1 < 37.0.6.1 | affected |
| F5 | NGINX Open Source | 1.29.2 < 1.31.6 | affected |
| F5 | NGINX Open Source | 1.30.4 < 1.30.5 | affected |
Weaknesses
- CWE-122: CWE-122 Heap-based Buffer Overflow
Workarounds
Disable HTTP/3 by removing "quic" from the "listen" directive. Alternatively, enable HTTP/3 by adding "quic" to all configured server blocks.
ADP Enrichment
CISA ADP Vulnrichment
- SSVC:
- Exploitation: none
- Automatable: yes
- Technical Impact: partial
References
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