CVE-2026-59649

EUVD-2026-52025
In Bouncy Castle for Java before 1.85, OpenPGP user-attribute subpacket length bounded only by JVM max memory. 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).
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
7.5 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: 23.91%
Affected Products (NVD)
VendorProductVersion
bouncycastlebc-java
𝑥
< 1.85
bouncycastlebcpg-fips
𝑥
< 1.0.13
bouncycastlebcpg-fips
2.0.8 ≤
𝑥
< 2.0.13
bouncycastlebcpg-fips
2.1.10 ≤
𝑥
< 2.1.13
bouncycastlebouncy_castle_for_java_lts
𝑥
≤ 2.73.11
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
bouncycastle
bookworm
vulnerable
forky
vulnerable
sid
vulnerable
trixie
vulnerable
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
bouncycastle
bionic
needs-triage
focal
needs-triage
jammy
needs-triage
noble
needs-triage
resolute
needs-triage
xenial
needs-triage
Amazon Linux logo
Amazon Linux Releases
Amazon Package
Release
bouncycastle
Amazon Linux 2023
0:1.70-4.amzn2023.0.8
fixed
bouncycastle-javadoc
Amazon Linux 2023
0:1.70-4.amzn2023.0.8
fixed
bouncycastle-mail
Amazon Linux 2023
0:1.70-4.amzn2023.0.8
fixed
bouncycastle-pg
Amazon Linux 2023
0:1.70-4.amzn2023.0.8
fixed
bouncycastle-pkix
Amazon Linux 2023
0:1.70-4.amzn2023.0.8
fixed
bouncycastle-tls
Amazon Linux 2023
0:1.70-4.amzn2023.0.8
fixed
bouncycastle-util
Amazon Linux 2023
0:1.70-4.amzn2023.0.8
fixed
Common Weakness Enumeration
References
https://github.com/bcgit/bc-java/commit/a43c40dc12c3e1c6cbd03c83fe30aaec4029b824
https://github.com/bcgit/bc-java/wiki/CVE%E2%80%902026%E2%80%9059649