VulnerabilityAnalyzed

CVE-2026-58062

In Bouncy Castle for Java before 1.85, Stapled OCSP response accepted without binding to the checked certificate.

CRITICAL 9.3EPSS 0.34%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (0.34%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

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).

CVSS 4.0: 9.3 CRITICALCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M
EPSS: 0.34% probability · 27th percentile
CISA KEV: Not listed
Weakness: CWE-295
Affected: bouncycastle/bc-java · bouncycastle/bouncy castle for java lts · bouncycastle/fips java api
Source: 91579145-5d7b-4cc5-b925-a0262ff19630

References

https://github.com/bcgit/bc-java/commit/add5f822660f3b2c29fd824e2f4095469c42a1c7Patch
https://github.com/bcgit/bc-java/wiki/CVE%E2%80%902026%E2%80%9058062Third Party Advisory, Patch

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.