ALAS2023-2026-3405: Security update for 7 packages

ALAS2023-2026-3405, released November 10, 2026, fixes 9 CVEs across 7 products. None of them is reported as exploited. Patch Radar priority: High.

High

CVEs closed

None rated Critical

Exploited

None reported

Highest CVSS

8.6

Base score, 0 to 10

Highest EPSS

0.0062

49th percentile

Priority of the 9 CVEs

Patch now 0
                                Urgent 0
                                High 6
                                Routine 3

Fixed package versions

Product	Release	Fixed in
bouncycastle	amzn 2023	1.70-4.amzn2023.0.9
bouncycastle-javadoc	amzn 2023	1.70-4.amzn2023.0.9
bouncycastle-mail	amzn 2023	1.70-4.amzn2023.0.9
bouncycastle-pg	amzn 2023	1.70-4.amzn2023.0.9
bouncycastle-pkix	amzn 2023	1.70-4.amzn2023.0.9
bouncycastle-tls	amzn 2023	1.70-4.amzn2023.0.9
bouncycastle-util	amzn 2023	1.70-4.amzn2023.0.9

CVEs this fix closes

Priority	CVE	Title	CVSS	EPSS	Exploitation
High	CVE-2026-13586	bouncycastle: PKCS#12 MAC and bag-decryption KDF iteration-count bound (bsc#1272710).	7.5	0.0062	None reported
High	CVE-2026-15055	bouncycastle: PKCS#8 / PBES2 decryptors honour unbounded KDF cost from input (bsc#1272712).	8.2	0.0034	None reported
High	CVE-2026-12185	bouncycastle: BKS/UBER keystore allocates from untrusted lengths before integrity check (bsc#1272701).	8.6	0.0029	None reported
High	CVE-2026-59651	bouncycastle: BKS keystore accepts legacy version with 16-bit integrity MAC key (bsc#1272731).	7.5	0.0020	None reported
High	CVE-2026-12802	bouncycastle: CMS AuthEnvelopedData fails to enforce tag-length on decryption (bsc#1272702).	7.5	0.0020	None reported
High	CVE-2026-12816	bouncycastle: IESEngine stream-mode MAC forgery via length-dependent KDF split (bsc#1272704).	7.5	0.0018	None reported
Routine	CVE-2026-58063	bouncycastle: BCFKS keystore load honours unbounded KDF cost from untrusted file (bsc#1272717).	5.3	0.0042	None reported
Routine	CVE-2026-59647	bouncycastle: CRMF/CMP password-MAC honours unbounded iteration count (bsc#1272727).	5.3	0.0042	None reported
Routine	CVE-2026-12860	bouncycastle: RSA PKCS#1 verification skips last two hash bytes in NULL-omitted path (bsc#1272708).	5.3	0.0017	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
DEBIAN-CVE-2026-13586
bouncycastle on Debian 14

Vendor advisory

https://alas.aws.amazon.com/AL2023/ALAS-2026-3405.html

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