critical
CVE-2026-8763
Bouncy Castle for Java certificate/signature verification bypasses (X.509 name-constraint bypass, CMS zero-signer accept, RSA PKCS#1 hash truncation) plus unbounded-KDF DoS
- Severity
- critical
- Affected product
- Bouncy Castle, Bouncy Castle LTS
- Affected versions
- Bouncy Castle ≥ 1.0, < 1.85
- Affected versions
- Bouncy Castle LTS ≥ 2.0, < 2.73.12
- Fixed in
- Bouncy Castle 1.85
- Fixed in
- Bouncy Castle LTS 2.73.12
- Detection basis
- Component version range
- Shipped rule
- Bouncy Castle: Bouncy Castle for Java certificate/signature verification bypasses (X.509 name-constraint bypass, CMS zero-signer accept, RSA PKCS#1 hash truncation) plus unbounded-KDF DoS
Bouncy Castle LTS: Bouncy Castle for Java LTS certificate/signature verification bypasses (X.509 name-constraint bypass, CMS zero-signer accept, RSA PKCS#1 hash truncation) plus unbounded-KDF DoS - Added to NewScan
- 2026-08-03
- Detected by
- NewScan — free, self-hosted
How NewScan reports it
COMPONENT VERSION RANGE
NewScan fingerprints Bouncy Castle from its response and reports this CVE when the detected version falls inside the affected range below.
COMPONENT VERSION RANGE
NewScan fingerprints Bouncy Castle LTS from its response and reports this CVE when the detected version falls inside the affected range below.
Related CVEs covered by this detection
The same shipped rule and upgrade also cover these identifiers:
- CVE-2026-12860 ↗
- CVE-2026-13586 ↗
- CVE-2026-15055 ↗
- CVE-2026-58063 ↗
- CVE-2026-59639 ↗
- CVE-2026-59640 ↗
- CVE-2026-59647 ↗
- CVE-2026-59648 ↗
References
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