Vulnerability-Lookup

GHSA-R374-RXX8-8654

Vulnerability from github – Published: 2026-05-06 00:31 – Updated: 2026-05-08 23:13

Summary

Paramiko rsakey.py allows the SHA-1 algorithm

Details

In Paramiko through 4.0.0 before a448945, rsakey.py allows the SHA-1 algorithm.

Severity ?

3.4 (Low)


                  
                    CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:N

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "paramiko"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "last_affected": "4.0.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-44405"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-327"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-05-08T23:13:43Z",
    "nvd_published_at": "2026-05-06T00:16:04Z",
    "severity": "LOW"
  },
  "details": "In Paramiko through 4.0.0 before a448945, rsakey.py allows the SHA-1 algorithm.",
  "id": "GHSA-r374-rxx8-8654",
  "modified": "2026-05-08T23:13:43Z",
  "published": "2026-05-06T00:31:33Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-44405"
    },
    {
      "type": "WEB",
      "url": "https://github.com/paramiko/paramiko/commit/a4489456b6f65281e172380cc4826cee5e851dbb"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/paramiko/paramiko"
    },
    {
      "type": "WEB",
      "url": "https://ostif.org/wp-content/uploads/2026/05/25-11-2415-REP_paramiko-security-audit_v1.1.pdf"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Paramiko rsakey.py allows the SHA-1 algorithm"
}

CVE-2026-44405 (GCVE-0-2026-44405)

Vulnerability from cvelistv5 – Published: 2026-05-05 23:50 – Updated: 2026-05-06 12:54

Summary

In Paramiko through 4.0.0 before a448945, rsakey.py allows the SHA-1 algorithm.

Severity ?

3.4 (Low)


                        
                          CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:N

CWE

CWE-327 - Use of a Broken or Risky Cryptographic Algorithm

Assigner

mitre

References

2 references

URL	Tags
https://github.com/paramiko/paramiko/commit/a4489…
https://ostif.org/wp-content/uploads/2026/05/25-1…

Impacted products

1 product

Vendor	Product	Version
Paramiko	Paramiko	Affected: 0 , < a4489456b6f65281e172380cc4826cee5e851dbb (git)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-44405",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-05-06T12:54:08.285055Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-05-06T12:54:17.468Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "packageURL": "pkg:pypi/paramiko",
          "product": "Paramiko",
          "vendor": "Paramiko",
          "versions": [
            {
              "lessThan": "a4489456b6f65281e172380cc4826cee5e851dbb",
              "status": "affected",
              "version": "0",
              "versionType": "git"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:a:paramiko:paramiko:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "a4489456b6f65281e172380cc4826cee5e851dbb",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In Paramiko through 4.0.0 before a448945, rsakey.py allows the SHA-1 algorithm."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "HIGH",
            "attackVector": "ADJACENT_NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 3.4,
            "baseSeverity": "LOW",
            "confidentialityImpact": "NONE",
            "integrityImpact": "LOW",
            "privilegesRequired": "NONE",
            "scope": "CHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:N",
            "version": "3.1"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-327",
              "description": "CWE-327 Use of a Broken or Risky Cryptographic Algorithm",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-05T23:55:03.332Z",
        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "shortName": "mitre"
      },
      "references": [
        {
          "url": "https://github.com/paramiko/paramiko/commit/a4489456b6f65281e172380cc4826cee5e851dbb"
        },
        {
          "url": "https://ostif.org/wp-content/uploads/2026/05/25-11-2415-REP_paramiko-security-audit_v1.1.pdf"
        }
      ],
      "x_generator": {
        "engine": "CVE-Request-form 0.0.1"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
    "assignerShortName": "mitre",
    "cveId": "CVE-2026-44405",
    "datePublished": "2026-05-05T23:50:52.811Z",
    "dateReserved": "2026-05-05T23:50:52.416Z",
    "dateUpdated": "2026-05-06T12:54:17.468Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

GHSA-R374-RXX8-8654

CVE-2026-44405 (GCVE-0-2026-44405)

Tags

Sightings

Nomenclature