What is GHSA-w983-hf44-gcww?

GHSA-w983-hf44-gcww is a security advisory published by GitHub Security Advisories with High severity. In Bouncy Castle for Java before 1.85, OpenPGP CFB quick-check oracle active on symmetric/session...

Which CVE IDs does GHSA-w983-hf44-gcww cover?

GHSA-w983-hf44-gcww covers the following CVE IDs: CVE-2026-59640. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

GHSA-w983-hf44-gcwwHigh

In Bouncy Castle for Java before 1.85, OpenPGP CFB quick-check oracle active on symmetric/session...

Vendor

GitHub Security Advisories

Published

August 3, 2026

Last Modified

August 3, 2026

🔗 CVE IDs covered (1)

CVE-2026-59640 →

📋 Description

In Bouncy Castle for Java before 1.85, OpenPGP CFB quick-check oracle active on symmetric/session-key paths. This issue also affects Bouncy Castle for Java LTS before 2.73.12, and Bouncy Castle for Java FIPS (BC-FJA) before bcpg-fips 1.0.13 (1.0.X series), 2.0.13 (2.0.X series) and 2.1.13 (2.1.X series).

🔗 References (5)

https://nvd.nist.gov/vuln/detail/CVE-2026-59640
https://github.com/bcgit/bc-java/commit/6b94b1c146cec1f565d9a85847fae511af77503e
https://github.com/bcgit/bc-java/wiki/CVE-2026-59640
https://github.com/bcgit/bc-java/wiki/CVE%E2%80%902026%E2%80%9059640
https://github.com/advisories/GHSA-w983-hf44-gcww