CVE-2026-59648

bouncycastle: In Bouncy Castle for Java before 1.85, OpenPGP Argon2 S2K honours attacker-chosen memory and passes

CVE-2026-59648 is fixed in bouncycastle on 1 platform, first by DEBIAN-CVE-2026-59648, released August 3, 2026. It is not reported as exploited. Patch Radar priority: Routine.

Routine
CVSS
5.3
medium
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0042
36th percentile

In Bouncy Castle for Java before 1.85, OpenPGP Argon2 S2K honours attacker-chosen memory and passes. 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).

Where it's fixed

ProductFixed inFixReleased
Linux
bouncycastle · Debian 14 1.86-1 DEBIAN-CVE-2026-59648 Aug 3, 2026
bouncycastle · opensuse-leap 16.0 1.85-160000.1.1 OPENSUSE-SU-2026:21538-1 Aug 6, 2026
bouncycastle · sles 15.6 1.85-150200.3.38.1 SUSE-SU-2026:3559-1 Aug 10, 2026
bouncycastle · sles 15.7 1.85-150200.3.38.1 SUSE-SU-2026:3559-1 Aug 10, 2026
bouncycastle · sles 16.0 1.85-160000.1.1 SUSE-SU-2026:23150-1 Aug 6, 2026

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