ALAS2023-2026-3438: Security update for 3 packages

ALAS2023-2026-3438, released November 13, 2026, fixes 4 CVEs across 3 products. 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

0.0053

45th percentile

Priority of the 4 CVEs

Patch now 0
                                Urgent 0
                                High 4
                                Routine 0

Fixed package versions

Product	Release	Fixed in
python-pyasn1-doc	amzn 2023	0.4.8-4.amzn2023.0.6
python3-pyasn1	amzn 2023	0.4.8-4.amzn2023.0.6
python3-pyasn1-modules	amzn 2023	0.4.8-4.amzn2023.0.6

CVEs this fix closes

Priority	CVE	Title	CVSS	EPSS	Exploitation
High	CVE-2026-119195	pyasn1: Quadratic-time denial of service in constructed string and indefinite-length ANY decoding	7.5	0.0053	None reported
High	CVE-2026-119194	pyasn1: Quadratic CPU use in schemaless BER/CER/DER container decoding	7.5	0.0043	None reported
High	CVE-2026-119196	pyasn1: Quadratic CPU consumption in constructed BIT STRING decoding	7.5	0.0043	None reported
High	CVE-2026-119197	pyasn1: Quadratic-complexity denial of service in binary REAL decoding	7.5	0.0043	None reported

Also fixes CVE-2026-119195

python3-pyasn1 0.6.3-1ubuntu0.2
python3-pyasn1 on Ubuntu 26.04.1 LTS (resolute)
DEBIAN-CVE-2026-119195
pyasn1 on Debian 14

Vendor advisory

https://alas.aws.amazon.com/AL2023/ALAS-2026-3438.html

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