CVE-2026-59647
Last modified
CVE-2026-59647 is a medium-severity vulnerability rated 6.9/10 on the CVSS scale. In Bouncy Castle for Java before 1.85, CRMF/CMP password-MAC honours unbounded iteration count. This issue also affects Bouncy Castle for Java LTS before 2.73.12, and Bouncy Castle for Java FIPS (BC-FJA) before bcpkix-fips 1.0.12 (1.0.X series), 2.0.12 (2.0.X series) and 2.1.12 (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, CRMF/CMP password-MAC honours unbounded iteration count. This issue also affects Bouncy Castle for Java LTS before 2.73.12, and Bouncy Castle for Java FIPS (BC-FJA) before bcpkix-fips 1.0.12 (1.0.X series), 2.0.12 (2.0.X series) and 2.1.12 (2.1.X series).
Metrics
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/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, < 1.0.12; >= 2.0.0, < 2.0.12; >= 2.1.0, < 2.1.12 |
References
Timeline
- Published
- Last Modified
- Status
- Awaiting Analysis
Frequently Asked Questions
What is CVE-2026-59647?
How severe is CVE-2026-59647?
How do I fix CVE-2026-59647?
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-2026-59641In Bouncy Castle for Java before 1.85, S/MIME validator trus…8.7
- CVE-2026-59642In Bouncy Castle for Java before 1.85, CMS AuthenticatedData…8.7
- CVE-2026-59643In Bouncy Castle for Java before 1.85, OpenPGP inline-signat…8.7
- CVE-2026-59644In Bouncy Castle for Java before 1.85, MLS hash-ratchet hono…8.7
- CVE-2026-59645In Bouncy Castle for Java before 1.85, OER parser recurses w…8.7
- CVE-2026-59646In Bouncy Castle for Java before 1.85, DTLS handshake reasse…8.7
- CVE-2026-59648In Bouncy Castle for Java before 1.85, OpenPGP Argon2 S2K ho…6.9
- CVE-2026-59649In Bouncy Castle for Java before 1.85, OpenPGP user-attribut…8.7
- CVE-2026-5965NewSoftOA developed by NewSoft has an OS Command Injection v…9.8
- CVE-2026-59650In Bouncy Castle for Java before 1.85, MTI/A0 DH agreement e…9.3
- CVE-2026-59651In Bouncy Castle for Java before 1.85, BKS keystore accepts …7.1
- CVE-2026-59652In Bouncy Castle for Java before 1.85, LDAP filter injection…6.9
Are you affected by CVE-2026-59647?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST