- 9.3CriticalCVSS base score
- 0.43%Exploitation in 30 daysEPSS · top 62% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
In Bouncy Castle for Java before 1.85, Name Constraints bypass via trailing dot in rfc822Name and URI. This issue also affects Bouncy Castle for Java LTS before 2.73.12, and Bouncy Castle for Java FIPS (BC-FJA) before bc-fips 1.0.2.7 (1.0.X series), 2.0.2 (2.0.X series) and 2.1.3 (2.1.X series).
Timeline
ID reserved
By bcorg
- 3 months later
· 3 months later
Published
- 2 months later
· 2 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| bcorgCNA (assigner) | 4.0 | Critical9.3 | 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/U:Amber |
| NVDNVD · Analyzed | 4.0 | Critical9.3 | 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 |
- EPSS (exploitation in 30 days)
- 0.43% · top 62% of all CVEs (10 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: yes · Technical impact: total
The list uses the assigner's score when there is one, then CISA's, then NVD's: Critical 9.3.
Affected products
Legion of the Bouncy Castle Inc. · BC-JAVA
- affected < 1.85
Legion of the Bouncy Castle Inc. · BC-LTS-JAVA
- affected 2.73.0 – < 2.73.12
Legion of the Bouncy Castle Inc. · BC-FJA
- affected 1.0.0 – < 1.0.2.7
- affected 2.0.0 – < 2.0.2
- affected 2.1.0 – < 2.1.3
Affected packages
4
From reviewed advisories of the GitHub Advisory Database.
- Mavenorg.bouncycastle:bc-fipsGHSA-9pwp-9qqc-pr26 (opens in a new tab)
- Mavenorg.bouncycastle:bcprov-jdk15to18GHSA-9pwp-9qqc-pr26 (opens in a new tab)
- Mavenorg.bouncycastle:bcprov-jdk18onGHSA-9pwp-9qqc-pr26 (opens in a new tab)
- Mavenorg.bouncycastle:bcprov-lts8onGHSA-9pwp-9qqc-pr26 (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-52020 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisory GHSA-9pwp-9qqc-pr26 (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-8763)Record last updated .