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).
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Legion of the Bouncy Castle | BC-JAVA | < 1.85 | 1.85 |
| Legion of the Bouncy Castle | BC-LTS-JAVA | 2.73.0 – < 2.73.12 | 2.73.12 |
| Legion of the Bouncy Castle | BC-FJA | 1.0.0 – < 1.0.2.7, 2.0.0 – < 2.0.2, 2.1.0 – < 2.1.3 | 1.0.2.7 |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | bouncycastle | 1.86-1 | — |
| Debian 13 | bouncycastle | No fix yet | — |
| Debian 12 | bouncycastle | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | bouncycastle | No fix yet | — |
| Ubuntu 26.04 LTS | bouncycastle | No fix yet | — |
Show 5 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 24.04 LTS | bouncycastle | No fix yet | — |
| Ubuntu Pro 22.04 LTS | bouncycastle | No fix yet | — |
| Ubuntu Pro 20.04 LTS | bouncycastle | No fix yet | — |
| Ubuntu Pro 18.04 LTS | bouncycastle | No fix yet | — |
| Ubuntu Pro 16.04 LTS | bouncycastle | No fix yet | — |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP7 | bouncycastle | 1.85-150200.3.38.1 | SUSE-SU-2026:3559-1 |
| SLES 15 SP6 | bouncycastle | 1.85-150200.3.38.1 | SUSE-SU-2026:3559-1 |
| SLES 15 SP5 | bouncycastle | 1.85-150200.3.38.1 | SUSE-SU-2026:3559-1 |
| SLES 15 SP4 | bouncycastle | 1.85-150200.3.38.1 | SUSE-SU-2026:3559-1 |
Show 7 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 16.0 | bouncycastle | 1.85-160000.1.1 | SUSE-SU-2026:23150-1, SUSE-SU-2026:23127-1 |
| SLES for SAP 15 SP6 | bouncycastle | 1.85-150200.3.38.1 | SUSE-SU-2026:3559-1 |
| SLES for SAP 15 SP5 | bouncycastle | 1.85-150200.3.38.1 | SUSE-SU-2026:3559-1 |
| SLES for SAP 15 SP4 | bouncycastle | 1.85-150200.3.38.1 | SUSE-SU-2026:3559-1 |
| SLES 16.0 | bouncycastle | 1.85-160000.1.1 | SUSE-SU-2026:23150-1, SUSE-SU-2026:23127-1 |
| SLE HPC 15 SP5 | bouncycastle | 1.85-150200.3.38.1 | SUSE-SU-2026:3559-1 |
| SLE HPC 15 SP4 | bouncycastle | 1.85-150200.3.38.1 | SUSE-SU-2026:3559-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | bouncycastle | 1.85-1.1 | openSUSE-SU-2026:11445-1 |
| openSUSE Leap 16.0 | bouncycastle | 1.85-160000.1.1 | openSUSE-SU-2026:21538-1 |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2023 | bouncycastle +6 | 1.70-4.amzn2023.0.8 | ALAS2023-2026-2153 |
Wolfi
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Wolfi rolling | apache-pulsar-4.2 | 4.2.4-r5 | — |
| Wolfi rolling | druid | 37.0.0-r57 | — |
| Wolfi rolling | keycloak-26.6 +1 | 26.6.7-r1 | — |
| Wolfi rolling | kserve-modelmesh | 0.12.0-r40 | — |
| Wolfi rolling | logstash-9.3 +3 | No fix yet | — |
| Wolfi rolling | logstash-9.4 +1 | 9.4.8-r0 | — |
| Wolfi rolling | opensearch-2 | 2.19.6-r11 | — |
| Wolfi rolling | ruby3.2-bouncy-castle-java | 1.5.0146.1-r9 | — |
| Wolfi rolling | ruby3.3-bouncy-castle-java | 1.5.0146.1-r7 | — |
| Wolfi rolling | ruby3.4-bouncy-castle-java | 1.5.0146.1-r8 | — |
| Wolfi rolling | ruby4.0-bouncy-castle-java | 1.5.0146.1-r5 | — |
| Wolfi rolling | spark-4.0-scala-2.13 | 4.0.4-r5 | — |
| Wolfi rolling | zipkin +1 | 3.6.1-r28 | — |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| Maven | org.bouncycastle:bc-fips | < 1.0.2.7 | 1.0.2.7 | GHSA-9pwp-9qqc-pr26 |
| Maven | org.bouncycastle:bc-fips | >= 2.0.0, < 2.0.2 | 2.0.2 | GHSA-9pwp-9qqc-pr26 |
| Maven | org.bouncycastle:bc-fips | >= 2.1.0, < 2.1.3 | 2.1.3 | GHSA-9pwp-9qqc-pr26 |
| Maven | org.bouncycastle:bcprov-jdk15to18 | < 1.85 | 1.85 | GHSA-9pwp-9qqc-pr26 |
| Maven | org.bouncycastle:bcprov-jdk18on | < 1.85 | 1.85 | GHSA-9pwp-9qqc-pr26 |
| Maven | org.bouncycastle:bcprov-lts8on | < 2.73.12 | 2.73.12 | GHSA-9pwp-9qqc-pr26 |
Advisories 14
- WID-SEC-2026-4090 Oracle Communications: Mehrere Schwachstellen BSI CERT-Bund (WID) · Nov 11, 2026
- WID-SEC-2026-2622 Bouncy Castle: Mehrere Schwachstellen BSI CERT-Bund (WID) · Nov 11, 2026
- WID-SEC-2026-3376 Atlassian Bamboo, Bitbucket, Confluence, Fisheye/Crucible, Jira Software und Jira Service Management: Mehrere Schwachstellen BSI CERT-Bund (WID) · Nov 10, 2026
- WID-SEC-2026-3595 IBM QRadar SIEM: Mehrere Schwachstellen BSI CERT-Bund (WID) · Nov 2, 2026
- NCSC-2026-0448 Kwetsbaarheden verholpen in Oracle Fusion Middleware NCSC-NL (Netherlands) · Oct 22, 2026
- NCSC-2026-0444 Kwetsbaarheden verholpen in Oracle Communications NCSC-NL (Netherlands) · Oct 21, 2026
- WID-SEC-2026-4078 Oracle Fusion Middleware: Mehrere Schwachstellen BSI CERT-Bund (WID) · Oct 20, 2026
- WID-SEC-2026-2958 IBM License Metric Tool: Mehrere Schwachstellen BSI CERT-Bund (WID) · Oct 4, 2026
- ALAS2023-2026-2153 Important: bouncycastle security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · Sep 14, 2026
- SUSE-SU-2026:23150-1 Security update for bouncycastle SUSE / openSUSE Security Updates · Aug 14, 2026
- SUSE-SU-2026:23127-1 Security update for bouncycastle SUSE / openSUSE Security Updates · Aug 14, 2026
- SUSE-SU-2026:3559-1 Security update for bouncycastle SUSE / openSUSE Security Updates · Aug 12, 2026
- openSUSE-SU-2026:21538-1 Security update for bouncycastle SUSE / openSUSE Security Updates · Aug 8, 2026
- openSUSE-SU-2026:11445-1 bouncycastle-1.85-1.1 on GA media SUSE / openSUSE Security Updates · Aug 5, 2026