CVE-2026-13506
Last modified
CVE-2026-13506 is a high-severity vulnerability rated 8.7/10 on the CVSS scale. In Bouncy Castle for Java before 1.85, Lazy ASN.1 sequence forcing resets nesting-depth guard. 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).. EPSS estimates a 0.26% chance of exploitation in the next 30 days.
Description
In Bouncy Castle for Java before 1.85, Lazy ASN.1 sequence forcing resets nesting-depth guard. 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).
Metrics
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/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
Weakness Enumeration
Affected Software
Source: CNA advisory (CVE.org). NVD analysis pending.
| Vendor | Product | Versions |
|---|---|---|
| Legion of the Bouncy Castle Inc. | BC-JAVA | < 1.85 |
| Legion of the Bouncy Castle Inc. | BC-LTS-JAVA | >= 2.73.0, < 2.73.12 |
| Legion of the Bouncy Castle Inc. | BC-FJA | >= 1.0.0, < 1.0.2.7; >= 2.0.0, < 2.0.2; >= 2.1.0, < 2.1.3 |
References
Timeline
- Published
- Last Modified
- Status
- Awaiting Analysis
Frequently Asked Questions
What is CVE-2026-13506?
How severe is CVE-2026-13506?
How do I fix CVE-2026-13506?
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2026
- CVE-2026-13500A weakness has been identified in antlr ANTLR4 up to 4.13.2.…7.3
- CVE-2026-13501A security vulnerability has been detected in antlr ANTLR4 u…5.3
- CVE-2026-13502A flaw has been found in antlr ANTLR4 up to 4.13.2. This aff…4.5
- CVE-2026-13503A vulnerability was detected in antlr ANTLR4 up to 4.13.2. A…5.5
- CVE-2026-13504A vulnerability has been found in code-projects Project Mana…3.5
- CVE-2026-13505In Bouncy Castle for Java FIPS (BC-FJA) before bc-fips 1.0.2…8.7
- CVE-2026-13507A vulnerability was detected in volcengine OpenViking up to …5
- CVE-2026-13508A flaw has been found in khoj-ai khoj up to 2.0.0-beta.28. T…5.5
- CVE-2026-13509A vulnerability has been found in RAGapp up to 0.1.5. Affect…6.3
- CVE-2026-13510A vulnerability was found in SimStudioAI sim up to 0.6.92. A…3.7
- CVE-2026-13511A vulnerability was determined in VoltAgent up to 2.1.17. Af…3.1
- CVE-2026-13512A vulnerability was identified in Databend up to 1.2.881 on …6.3
Are you affected by CVE-2026-13506?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST
