CVE-2026-23490

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Source
https://nvd.nist.gov/vuln/detail/CVE-2026-23490
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-23490.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-23490
Aliases
Downstream
Published
2026-01-16T19:03:36.442Z
Modified
2026-01-18T03:45:11.725664Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
pyasn1 has a DoS vulnerability in decoder
Details

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.

Database specific 
{
    "cwe_ids": [
        "CWE-770"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/23xxx/CVE-2026-23490.json",
    "cna_assigner": "GitHub_M"
}
References

Affected packages

Git / github.com/pyasn1/pyasn1

Affected ranges

Type
GIT
Repo
https://github.com/pyasn1/pyasn1
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
e7356f89cf32c130d65b1a0e903fe7ecce426424

Affected versions

0.*

0.2.3

v0.*

v0.2.1
v0.2.2
v0.3.1
v0.3.2
v0.3.3
v0.3.4
v0.3.5
v0.3.6
v0.3.7
v0.4.1
v0.4.2
v0.4.3
v0.4.4
v0.4.5
v0.4.6
v0.4.7
v0.4.8
v0.5.0
v0.5.1
v0.6.0
v0.6.1

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-23490.json"