Improper Validation of Integrity Check Value Affecting org.bouncycastle:bcpkix-debug-jdk14 package, versions [,1.85)
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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- published4 Aug 2026
- disclosed3 Aug 2026
- creditUnknown
Introduced: 3 Aug 2026
NewCVE-2026-59642 (opens in a new tab)How to fix?
Upgrade org.bouncycastle:bcpkix-debug-jdk14 to version 1.85 or higher.
Overview
Affected versions of this package are vulnerable to Improper Validation of Integrity Check Value in the getContentStream() method of RecipientInformation, which, when authenticated attributes are present, authenticates only the DER-encoded authAttrs and never checks the computed content digest against the messageDigest attribute required by RFC 5652 section 9.3. An attacker who intercepts a CMS AuthenticatedData message can substitute arbitrary content that still passes verification by replacing encapContentInfo.eContent while leaving authAttrs and the MAC untouched. This applies when the message carries authenticated attributes and the application follows the documented pattern of comparing only ad.getMac() to recipient.getMac() without separately validating the content digest.