CVE-2026-23490

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Source
https://cve.org/CVERecord?id=CVE-2026-23490
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-23490.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2026-23490
Aliases
Downstream
Related
Published
2026-01-16T19:03:36.442Z
Modified
2026-06-15T12:23:48.216166154Z
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 
{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/23xxx/CVE-2026-23490.json",
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-770"
    ]
}
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
Fixed
3908f144229eed4df24bd569d16e5991ace44970
Database specific 
{
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "0.6.2"
        }
    ],
    "cpe": "cpe:2.3:a:pyasn1:pyasn1:*:*:*:*:*:python:*:*",
    "source": [
        "CPE_RANGE",
        "REFERENCES"
    ]
}

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/osv-test-cve-osv-conversion/osv-output/CVE-2026-23490.json"