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CVE-2026-23490
Component Overview
Vulnerability Overview
Name
CVE-2026-23490
Source
NVD (
link
)
Debian (
link
)
Description
pyasn1 is a generic ASN.1 library for Python. Prior to 0.6.2, a Denial-of-Service issue has been found that leads to memory exhaustion from malformed RELATIVE-OID with excessive continuation octets. This vulnerability is fixed in 0.6.2.
CWEs
CWE-770
Published Date
Jan 16, 2026
Updated Date
Jun 17, 2026
Workaround
-
Advisories
https://github.com/pyasn1/pyasn1/commit/3908f144229eed4df24bd569d16e5991ace44970
Patch
https://github.com/pyasn1/pyasn1/releases/tag/v0.6.2
Product
https://github.com/pyasn1/pyasn1/security/advisories/GHSA-63vm-454h-vhhq
Vendor Advisory
https://lists.debian.org/debian-lts-announce/2026/02/msg00002.html
Vendor Advisory
Analysis
#
Affected Component
Analysis
python3-pyasn1
Patched
Vulnerability Ratings
#
7.5
CVSSv31
NaN
other
Others affected components
#
Name
Project
Project Version
Version
Status
python3-pyasn1
yocto
kirkstone
0.4.8
Not Affected
python3-pyasn1
yocto
master
0.6.3
Not Affected
Resolved with patches
#
python3-pyasn1 (yocto:scarthgap)
#
Title
Author
Resolve
1
Merge commit from fork
Simon Pichugin <simon.pichugin@gmail.com>
CVE-2026-23490