Description
In Bouncy Castle for Java before 1.85, CMS verifySignatures returns true for SignedData with zero signers. This issue also affects Bouncy Castle for Java LTS before 2.73.12, and Bouncy Castle for Java FIPS (BC-FJA) before bcpkix-fips 1.0.12 (1.0.X series), 2.0.12 (2.0.X series) and 2.1.12 (2.1.X series).
Analysis
No analysis available yet.
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Legion of the Bouncy Castle Inc. | BC-JAVA | unaffected |
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| Legion of the Bouncy Castle Inc. | BC-LTS-JAVA | unaffected |
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| Legion of the Bouncy Castle Inc. | BC-FJA | unaffected |
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No data available yet.
Remediation
No remediation available yet.
Tracking
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Advisories
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References
History
Mon, 03 Aug 2026 01:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | In Bouncy Castle for Java before 1.85, CMS verifySignatures returns true for SignedData with zero signers. This issue also affects Bouncy Castle for Java LTS before 2.73.12, and Bouncy Castle for Java FIPS (BC-FJA) before bcpkix-fips 1.0.12 (1.0.X series), 2.0.12 (2.0.X series) and 2.1.12 (2.1.X series). | |
| Title | CMS verifySignatures returns true for SignedData with zero signers | |
| Weaknesses | CWE-347 | |
| References |
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| Metrics |
cvssV4_0
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Subscriptions
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MITRE
Status: PUBLISHED
Assigner: bcorg
Published:
Updated: 2026-08-03T00:56:24.394Z
Reserved: 2026-07-06T06:58:29.263Z
Link: CVE-2026-59639
Vulnrichment
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NVD
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Redhat
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OpenCVE Enrichment
No data.
Weaknesses
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CWE-347
Improper Verification of Cryptographic Signature