CVE-2026-28755
5.4
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
Summary
NGINX Plus and NGINX Open Source have a vulnerability in the ngx_stream_ssl_module module due to the improper handling of revoked certificates when configured with the ssl_verify_client on and ssl_ocsp on directives, allowing the TLS handshake to succeed even after an OCSP check identifies the certificate as revoked.
Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| F5 | NGINX Open Source | 1.29.0 < 1.29.7 | affected |
| F5 | NGINX Open Source | 1.27.2 < 1.28.3 | affected |
| F5 | NGINX Plus | R36 < R36 P3 | affected |
| F5 | NGINX Plus | R35 < R35 P2 | affected |
| F5 | NGINX Plus | R34 < * | affected |
| F5 | NGINX Plus | R33 < * | affected |
Weaknesses
- CWE-863: CWE-863 Incorrect Authorization
ADP Enrichment
CISA ADP Vulnrichment
- SSVC:
- Exploitation: none
- Automatable: no
- Technical Impact: partial
References
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