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CVE-2026-58062 Bouncy Castle for Java LTS

Affected softwareBouncy Castle for Java LTS
Severity9.3 Critical CVSS 4.0 2 scores
WeaknessCWE-295
Published3 Aug 2026
Updated2 Sep 2026

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).

Exploitation status

No public exploit

No exploit has been reported in the sources we check. The 1 repository below are public GitHub repositories with fewer than 5 stars.

  • CISA KEV not listed
  • VulnCheck KEV not listed
  • CISA Vulnrichment exploitation: none
  • Indexed PoC 1 indexed, none at 5+ stars
  • EPSS 0.36% chance in 30 days

1 of these are GitHub repositories with fewer than 5 stars. They are listed for reference and don't count toward the exploitation status above.

IndexArtifactStarsFirst seen
GitHub PoC Offline scanner telling you which of the 2026 Bouncy Castle CVEs actually apply to you - across BC, BC-LTS and BC-FJA (FIPS), which do not share a version scheme. CVE-2026-58062 / CVE-2026-8763 / CVE-2026-59650 / CVE-2026-59638 2026-08-05

Waratek protection

No exploit published

Within Waratek scope. In the sources we check, nobody has published exploit code for this CVE or reported it being exploited.

A public code fix exists: bcgit/bc-java add5f82.

  • Protection none
  • Action unverified
  • Review automated Upstream data
  • Record active
Decided by Exploit code for this candidate, published in a reviewed catalogue or a GitHub repository with 5 or more stars, or in use per CISA or VulnCheck; not only a CISA verdict, a forecast, or nothing at all
Finding This CVE is not listed in CISA KEV or VulnCheck KEV, CISA Vulnrichment records no active exploitation, no reviewed exploit catalogue carries an entry for it, and no GitHub PoC repository for it has 5 or more stars. Nobody has published exploit code worth tracing, so it is not a candidate for a rule ahead of the ones where somebody has; an upstream fix path does exist, so the remediation half of the candidacy still holds. This is a statement about what has been published, not about whether the defect is reachable or serious.
Candidate fix https://github.com/bcgit/bc-java/commit/add5f822660f3b2c29fd824e2f4095469c42a1c7 : a commit: the change itself

CVSS

9.3 CRITICAL v4.0 CVSS: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/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:Amber 2 metrics

We show the highest score from the newest CVSS version. Scores from different versions can't be compared, and the first score listed is sometimes a 0.0 placeholder.

VersionScoreBandVectorAssignerType
CVSS 4.0 9.3 CRITICAL CVSS: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/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:Amber bcorg Secondary published
CVSS 3.1 9.1 CRITICAL CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N NVD Primary

Affected software and releases

Oracle advisories

AdvisoryTypeQuarterProducts Oracle names in its risk matrix
Oracle Critical Patch Update October 2026 ↗ CPU 2026-Q4 Oracle Fusion Middleware / NextGen Installer (Bouncy Castle Java Library) (12.2.1.4.0, 14.1.1.0.0, 14.1.2.0.0, 14.1.2.1.0, 15.1.1.0.0)
Oracle Fusion Middleware / Third Party (Bouncy Castle Java Library) (14.1.2.0.0)

Oracle components and versions

FamilyComponentVersions, as Oracle lists themRead as
Oracle Fusion Middleware NextGen Installer (Bouncy Castle Java Library) 12.2.1.4.0, 14.1.1.0.0, 14.1.2.0.0, 14.1.2.1.0, 15.1.1.0.0 12.2.1.4.0 · 14.1.1.0.0 · 14.1.2.0.0 · 14.1.2.1.0 · 15.1.1.0.0
Oracle Fusion Middleware Third Party (Bouncy Castle Java Library) 14.1.2.0.0 14.1.2.0.0

Products and versions

3 products, 4 version entries
SourceVendorProductSchemeAffected versions
nvd bouncycastle bc-java generic ≥ 1.66 and < 1.85
nvd bouncycastle bouncy castle for java lts generic ≤ 2.73.11
nvd bouncycastle fips java api generic < 2.0.2 · ≥ 2.1.0 and < 2.1.3

References

URLTags
https://github.com/bcgit/bc-java/commit/add5f822660f3b2c29fd824e2f4095469c42a1c7 commit
https://github.com/bcgit/bc-java/wiki/CVE%E2%80%902026%E2%80%9058062 Third Party Advisory, Patch

Timeline

Published2026-08-03By the CVE Program.
NVD record modified2026-09-02NVD's own last-modified date for this record.