What’s Vulnerable › Vulnerabilities

CVE-2024-0853: OCSP verification bypass with TLS session reuse

• Severity: medium (CVSS 5.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.1% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2024-02-03 · updated 2026-06-17
• Weakness: CWE-295

Description

curl inadvertently kept the SSL session ID for connections in its cache even when the verify status (*OCSP stapling*) test failed. A subsequent transfer to the same hostname could then succeed if the session ID cache was still fresh, which then skipped the verify status check.

Affected products

• curl: 8.5.0

References

• https://curl.se/docs/CVE-2024-0853.html
• https://curl.se/docs/CVE-2024-0853.json
• https://hackerone.com/reports/2298922
• https://security.netapp.com/advisory/ntap-20240307-0004/
• https://security.netapp.com/advisory/ntap-20240426-0009/
• https://security.netapp.com/advisory/ntap-20240503-0012/
• https://curl.se/docs/CVE-2024-0853.html
• https://curl.se/docs/CVE-2024-0853.json
• https://hackerone.com/reports/2298922
• https://security.netapp.com/advisory/ntap-20240307-0004/
• https://security.netapp.com/advisory/ntap-20240426-0009/
• https://security.netapp.com/advisory/ntap-20240503-0012/

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