Incorrect Authorization Affecting nginx package, versions [0.5.13,1.28.3)[1.29.0,1.29.7)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published29 Mar 2026
- disclosed24 Mar 2026
- creditMufeed VH
Introduced: 24 Mar 2026
CVE-2026-28755 (opens in a new tab)How to fix?
Upgrade nginx to version 1.28.3, 1.29.7 or higher.
Overview
Affected versions of this package are vulnerable to Incorrect Authorization in the ngx_stream_ssl_module process when configured with both ssl_verify_client and ssl_ocsp directives enabled. An attacker can bypass certificate revocation checks by presenting a revoked certificate that is incorrectly accepted during the TLS handshake.