Double Free Affecting openssl package, versions [3.6.0,]
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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Test your applications- Snyk IDSNYK-CONAN-OPENSSL-17276468
- published10 Jun 2026
- disclosed9 Jun 2026
- creditWang Kenaz,Guido Vranken,Aaron Grattafiori
Introduced: 9 Jun 2026
NewCVE-2026-35188 (opens in a new tab)How to fix?
A fix was pushed into the master branch but not yet published.
Overview
Affected versions of this package are vulnerable to Double Free in the certificate verification path, in the TLS client's OCSP stapling response handling. An attacker operating a malicious server can deliver an OCSP response via the status_request extension that corrupts heap memory and triggers a crash (with code execution possible but environment-dependent). Exploitation requires OCSP stapling, which is not enabled by default.