ESB-2026.3283
PUBLISHED
CVSS 7.5 HIGH
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AUSCERT External Security Bulletin Redistribution
ESB-2026.3283
pyasn1 security update
7 April 2026
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AUSCERT Security Bulletin Summary
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Product: pyasn1
Publisher: Debian
Operating System: Debian GNU/Linux
Resolution: Patch/Upgrade
CVE Names: CVE-2026-30922
Original Bulletin:
https://lists.debian.org/debian-security-announce/2026/msg00103.html
Comment: CVSS (Max): 7.5 CVE-2026-30922 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
CVSS Source: GitHub
Calculator: https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS (Max): 0.0% (15th) CVE-2026-30922 2026-04-05
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Debian Security Advisory DSA-6194-1 security@debian.org
https://www.debian.org/security/ Salvatore Bonaccorso
April 03, 2026 https://www.debian.org/security/faq
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Package : pyasn1
CVE ID : CVE-2026-30922
Debian Bug : 1131371
It was discovered that pyasn1, a generic ASN.1 library for Python, is
prone to a denial of service vulnerability when decoding ASN.1 data with
deeply nested structures.
For the oldstable distribution (bookworm), this problem has been fixed
in version 0.4.8-3+deb12u2.
For the stable distribution (trixie), this problem has been fixed in
version 0.6.1-1+deb13u2.
We recommend that you upgrade your pyasn1 packages.
For the detailed security status of pyasn1 please refer to its security
tracker page at:
https://security-tracker.debian.org/tracker/pyasn1
Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://www.debian.org/security/
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