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curl: OpenSSL `--cert-status` accepts indefinitely stale GOOD OCSP staples

🗓️ 18 Oct 2026 17:47:33Reported by stzeType 
hackerone
 hackerone🔗 hackerone.com👁 2 Views

curl with OpenSSL backend accepts stale OCSP staples, bypassing certificate revocation.

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26 Oct 2026 12:50Current
6.6Medium risk
Vulners AI Score6.6
CVSS 25
CVSS 3.15.9 - 7.5
EPSS0.04631
SSVC
curlOpenSSLOCSPcertificate revocation bypassCURLOPT_SSL_VERIFYSTATUSHTTPS
2