FKIE_CVE-2026-23490

Vulnerability from fkie_nvd - Published: 2026-01-16 19:16 - Updated: 2026-01-16 19:16
Severity ?
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Summary
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.
References
security-advisories@github.comhttps://github.com/pyasn1/pyasn1/commit/3908f144229eed4df24bd569d16e5991ace44970
security-advisories@github.comhttps://github.com/pyasn1/pyasn1/releases/tag/v0.6.2
security-advisories@github.comhttps://github.com/pyasn1/pyasn1/security/advisories/GHSA-63vm-454h-vhhq
Impacted products
Vendor Product Version
To clipboard 

{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "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."
    }
  ],
  "id": "CVE-2026-23490",
  "lastModified": "2026-01-16T19:16:19.117",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 7.5,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 3.6,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-01-16T19:16:19.117",
  "references": [
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/pyasn1/pyasn1/commit/3908f144229eed4df24bd569d16e5991ace44970"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/pyasn1/pyasn1/releases/tag/v0.6.2"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/pyasn1/pyasn1/security/advisories/GHSA-63vm-454h-vhhq"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Received",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-770"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Primary"
    }
  ]
}


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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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