| Name | CVE-2026-23490 |
| 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. |
| Source | CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | DLA-4463-1, DSA-6114-1 |
| Debian Bugs | 1125753 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| pyasn1 (PTS) | bullseye | 0.4.8-1 | vulnerable |
| bullseye (security) | 0.4.8-1+deb11u1 | fixed | |
| bookworm | 0.4.8-3 | vulnerable | |
| bookworm (security) | 0.4.8-3+deb12u1 | fixed | |
| trixie | 0.6.1-1 | vulnerable | |
| trixie (security) | 0.6.1-1+deb13u1 | fixed | |
| forky, sid | 0.6.2-1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| pyasn1 | source | bullseye | 0.4.8-1+deb11u1 | DLA-4463-1 | ||
| pyasn1 | source | bookworm | 0.4.8-3+deb12u1 | DSA-6114-1 | ||
| pyasn1 | source | trixie | 0.6.1-1+deb13u1 | DSA-6114-1 | ||
| pyasn1 | source | (unstable) | 0.6.2-1 | 1125753 |
https://github.com/pyasn1/pyasn1/security/advisories/GHSA-63vm-454h-vhhq
Fixed by: https://github.com/pyasn1/pyasn1/commit/3908f144229eed4df24bd569d16e5991ace44970 (v0.6.2)