ALAS2023-2026-2153: Security update for 7 packages

ALAS2023-2026-2153, released September 14, 2026, fixes 16 CVEs across 7 products. None of them is reported as exploited. Patch Radar priority: Urgent.

Urgent

CVEs closed

3 rated Critical

Exploited

None reported

Highest CVSS

9.1

Base score, 0 to 10

Highest EPSS

0.0062

49th percentile

Priority of the 16 CVEs

Patch now 0
                                Urgent 3
                                High 11
                                Routine 2

Fixed package versions

Product	Release	Fixed in
bouncycastle	amzn 2023	1.70-4.amzn2023.0.8
bouncycastle-javadoc	amzn 2023	1.70-4.amzn2023.0.8
bouncycastle-mail	amzn 2023	1.70-4.amzn2023.0.8
bouncycastle-pg	amzn 2023	1.70-4.amzn2023.0.8
bouncycastle-pkix	amzn 2023	1.70-4.amzn2023.0.8
bouncycastle-tls	amzn 2023	1.70-4.amzn2023.0.8
bouncycastle-util	amzn 2023	1.70-4.amzn2023.0.8

CVEs this fix closes

Priority	CVE	Title	CVSS	EPSS	Exploitation
Urgent	CVE-2026-8763	bouncycastle: In Bouncy Castle for Java before 1.85, Name Constraints bypass via trailing dot in rfc822Name and URI	9.1	0.0043	None reported
Urgent	CVE-2026-58062	bouncycastle: In Bouncy Castle for Java before 1.85, Stapled OCSP response accepted without binding to the checked certificate	9.1	0.0036	None reported
Urgent	CVE-2026-59650	bouncycastle: In Bouncy Castle for Java before 1.85, MTI/A0 DH agreement exponentiates unvalidated peer value	9.1	0.0034	None reported
High	CVE-2026-58060	bouncycastle: In Bouncy Castle for Java before 1.85, HSS public-key level count unbounded, enabling huge allocation on verify	7.5	0.0062	None reported
High	CVE-2026-13506	bouncycastle: This update for bouncycastle fixes the following issues: - CVE-2026-8763: Name Constraints bypass via trailing dot i...	7.5	0.0049	None reported
High	CVE-2026-14682	bouncycastle: In Bouncy Castle for Java before 1.85, Possible OOM from unbounded up-front allocation on a definite-length read	7.5	0.0049	None reported
High	CVE-2026-58059	bouncycastle: In Bouncy Castle for Java before 1.85, Quadratic-time escaping when stringifying X.500 distinguished names	7.5	0.0049	None reported
High	CVE-2026-59649	eap8-activemq-artemis: In Bouncy Castle for Java before 1.85, OpenPGP user-attribute subpacket length bounded only by JVM max memory	7.5	0.0049	None reported
High	CVE-2026-59646	bouncycastle: In Bouncy Castle for Java before 1.85, DTLS handshake reassembler allocates buffer from unchecked 24-bit length	7.5	0.0047	None reported
High	CVE-2026-59645	bouncycastle: In Bouncy Castle for Java before 1.85, OER parser recurses without depth limit on self-referential IEEE 1609.2 schema	7.5	0.0041	None reported
High	CVE-2026-59642	bouncycastle: In Bouncy Castle for Java before 1.85, CMS AuthenticatedData content not bound to MAC when authAttrs present	7.5	0.0030	None reported
High	CVE-2026-58061	bouncycastle: In Bouncy Castle for Java before 1.85, CCM-family modes write plaintext to caller buffer before tag check	7.5	0.0028	None reported
High	CVE-2026-59639	bouncycastle: In Bouncy Castle for Java before 1.85, CMS verifySignatures returns true for SignedData with zero signers	7.5	0.0024	None reported
High	CVE-2026-12803	bouncycastle: In Bouncy Castle for Java before 1.85, KCCMBlockCipher MAC does not bind nonce when AAD is absent (cross-nonce AEAD f...	7.5	0.0024	None reported
Routine	CVE-2026-59638	bouncycastle: In Bouncy Castle for Java before 1.85, JSSE hostname verifier CN-fallback enabled by default despite documented opt-in	6.5	0.0035	None reported
Routine	CVE-2026-59641	bouncycastle: In Bouncy Castle for Java before 1.85, S/MIME validator trusts signer-asserted signingTime for path validation	5.3	0.0018	None reported

Also fixes CVE-2026-8763

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
DEBIAN-CVE-2026-8763
bouncycastle on Debian 14

Vendor advisory

https://alas.aws.amazon.com/AL2023/ALAS-2026-2153.html

For tools and AI agents

This page as data: JSON · Markdown

Link to this page

If this page saved you time, a link to it in your ticket, advisory or write-up helps others find it.

HTML

<a href="https://patchblox.com/security/fix/linux/alas2023-2026-2153">ALAS2023-2026-2153 on Patchblox Patch Radar</a>

Reusing the data? How to credit Patch Radar.

Which servers are still behind?

Patchblox compares the installed package on every Linux machine against the fixed version for its release, including machines reported through Azure Update Manager.

Get a demo

Patch Radar data is free to use with attribution. Terms and how to credit it.

Product names, logos and trademarks shown on Patch Radar belong to their respective owners. They are used only to identify the software each security fix applies to and to help readers find their platform. Their use does not imply any affiliation with, or endorsement by, those owners, and Patchblox is not affiliated with any of them.