CVE-2026-15055 PUBLISHED

PKCS#8 / PBES2 decryptors honour unbounded KDF cost from input

Assigner: bcorg
Reserved: 08.07.2026 Published: 03.08.2026 Updated: 03.08.2026

In Bouncy Castle for Java before 1.85, PKCS#8 / PBES2 decryptors honour unbounded KDF cost from input. 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 Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/U:Amber
CVSS Score: 5.3

Product Status

Vendor Legion of the Bouncy Castle Inc.
Product BC-JAVA
Versions Default: unaffected
  • affected from 0 to 1.85 (excl.)
Vendor Legion of the Bouncy Castle Inc.
Product BC-LTS-JAVA
Versions Default: unaffected
  • affected from 2.73.0 to 2.73.12 (excl.)
Vendor Legion of the Bouncy Castle Inc.
Product BC-FJA
Versions Default: unaffected
  • affected from 1.0.0 to 1.0.12 (excl.)
  • affected from 2.0.0 to 2.0.12 (excl.)
  • affected from 2.1.0 to 2.1.12 (excl.)

Credits

  • Alex Gaynor in collaboration with Claude and Anthropic Research reporter

References

Problem Types

  • CWE-770 Allocation of Resources Without Limits or Throttling CWE