What’s Vulnerable › Vulnerabilities

CVE-2026-58062: Stapled OCSP response accepted without binding to the checked certificate

• Severity: critical (CVSS 9.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-08-03 · updated 2026-09-02
• Weakness: CWE-295

Description

In Bouncy Castle for Java before 1.85, Stapled OCSP response accepted without binding to the checked certificate. This issue also affects Bouncy Castle for Java LTS before 2.73.12, and Bouncy Castle for Java FIPS (BC-FJA) before bc-fips 2.0.2 (2.0.X series) and 2.1.3 (2.1.X series).

Affected products

• Legion of the Bouncy Castle Inc. BC-JAVA: from 1.66 before 1.85 — fixed in 1.85
• Legion of the Bouncy Castle Inc. Bouncy Castle for Java LTS: through 2.73.11
• Bouncycastle Fips Java Api: before 2.0.2; from 2.1.0 before 2.1.3 — fixed in 2.0.2, 2.1.3

How to fix

Upgrade to a fixed version: Legion of the Bouncy Castle Inc. BC-JAVA 1.85; Bouncycastle Fips Java Api 2.0.2, 2.1.3. Check the vendor advisory for mitigations.

References

• https://github.com/bcgit/bc-java/commit/add5f822660f3b2c29fd824e2f4095469c42a1c7
• https://github.com/bcgit/bc-java/wiki/CVE%E2%80%902026%E2%80%9058062

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