Advisory details:
gitlab / maven/org.bouncycastle/bcprov-jdk14/CVE-2026-8763
| Advisory ID | gitlab/maven/org.bouncycastle/bcprov-jdk14/CVE-2026-8763 |
| Aliases |
CVE-2026-8763
|
| Summary | Name Constraints bypass via trailing dot in rfc822Name and URI Affects Bouncy Castle for Java before 1.85. PKIXNameConstraintValidator strips a trailing dot before comparing dNSName values but not rfc822Name or URI values, which are compared with a plain case-insensitive match. A certificate whose email or URI SAN ends in a dot therefore evades an excludedSubtrees entry for the same host and path validation succeeds. An attacker controlling a name-constrained intermediate CA can issue certificates for names the constraints were meant to exclude. |
| Status | Published |
| Exploitability | 0.5 |
| Weighted Severity | 0.0 |
| Risk | |
| Affected and Fixed Packages | Package Details |
| Introduced and Fixed Package Commit Patches | Package Commit Patches Details |
| System | Score | Found at |
|---|---|---|
| cvssv3.1 | https://gitlab.com/gitlab-org/advisories-community/-/blob/main/maven/org.bouncycastle/bcprov-jdk14/CVE-2026-8763.yml |
| Reference id | Reference type | URL |
|---|---|---|
| https://github.com/bcgit/bc-java/wiki/CVE-2026-8763 | ||
| 2c28b253a44681fbbc562561eab6ad383d2ae558 | Other | https://github.com/bcgit/bc-java/commit/2c28b253a44681fbbc562561eab6ad383d2ae558 |
| CVE-2026-8763 | https://nvd.nist.gov/vuln/detail/CVE-2026-8763 |
No EPSS data available for this advisory.
| Patch URL | |
|---|---|
| There are no known patches. | |
| Attack Vector (AV) | Attack Complexity (AC) | Privileges Required (PR) | User Interaction (UI) | Scope (S) | Confidentiality Impact (C) | Integrity Impact (I) | Availability Impact (A) |
|---|---|---|---|---|---|---|---|
network adjacent_network local physical |
low high |
none low high |
none required |
unchanged changed |
high low none |
high low none |
high low none |
There are no SSVC decisions available.