CVE-2026-58060

In Bouncy Castle for Java before 1.85, HSS public-key level count unbounded, enabling huge allocation on verify. This issue also affects Bouncy Castle for Java LTS before 2.73.12, and Bouncy Castle for Java FIPS (BC-FJA) before bc-fips 2.0.2 (2.0.X series) and 2.1.3 (2.1.X series).

Weakness

The product allocates memory based on an untrusted, large size value, but it does not ensure that the size is within expected limits, allowing arbitrary amounts of memory to be allocated.

Potential Mitigations

References

• https://github.com/bcgit/bc-java/commit/311cabbb6fcead7647fec16681423a4439118276
• https://github.com/bcgit/bc-java/commit/6c9f30b3fdaa3f2140809278caebbffc55920922
• https://github.com/bcgit/bc-java/wiki/CVE%E2%80%902026%E2%80%9058060