DEBIAN-CVE-2026-13586: bouncycastle security update

DEBIAN-CVE-2026-13586, released August 3, 2026, fixes 1 CVE in bouncycastle (version 1.86-1). None of them is reported as exploited. Patch Radar priority: High.

High

CVEs closed

None rated Critical

Exploited

None reported

Highest CVSS

7.5

Base score, 0 to 10

Highest EPSS

0.0062

49th percentile

Fixed package versions

Product	Release	Fixed in
bouncycastle	Debian 14	1.86-1

CVEs this fix closes

Priority	CVE	Title	CVSS	EPSS	Exploitation
High	CVE-2026-13586	bouncycastle: This update for bouncycastle fixes the following issues: - CVE-2026-8763: Name Constraints bypass via trailing dot i...	7.5	0.0062	None reported

Also fixes CVE-2026-13586

SUSE-SU-2026:3559-1
bouncycastle on sles 15.6, sles 15.7
SUSE-SU-2026:23150-1
bouncycastle on sles 16.0
OPENSUSE-SU-2026:21538-1
bouncycastle on opensuse-leap 16.0

Vendor advisory

https://security-tracker.debian.org/tracker/CVE-2026-13586

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