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

Vulnerability from cvelistv5 – Published: 2026-05-05 23:50 – Updated: 2026-05-05 23:55
VLAI?
Summary
In Paramiko through 4.0.0 before a448945, rsakey.py allows the SHA-1 algorithm.
CWE
  • CWE-327 - Use of a Broken or Risky Cryptographic Algorithm
Assigner
Impacted products
Vendor Product Version
Paramiko Paramiko Affected: 0 , < a4489456b6f65281e172380cc4826cee5e851dbb (git)
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Show details on NVD website

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    "cveId": "CVE-2026-44405",
    "datePublished": "2026-05-05T23:50:52.811Z",
    "dateReserved": "2026-05-05T23:50:52.416Z",
    "dateUpdated": "2026-05-05T23:55:03.332Z",
    "state": "PUBLISHED"
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    "nvd": "{\"cve\":{\"id\":\"CVE-2026-44405\",\"sourceIdentifier\":\"cve@mitre.org\",\"published\":\"2026-05-06T00:16:04.883\",\"lastModified\":\"2026-05-06T00:16:04.883\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In Paramiko through 4.0.0 before a448945, rsakey.py allows the SHA-1 algorithm.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"cve@mitre.org\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:N\",\"baseScore\":3.4,\"baseSeverity\":\"LOW\",\"attackVector\":\"ADJACENT_NETWORK\",\"attackComplexity\":\"HIGH\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"CHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"LOW\",\"availabilityImpact\":\"NONE\"},\"exploitabilityScore\":1.6,\"impactScore\":1.4}]},\"weaknesses\":[{\"source\":\"cve@mitre.org\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-327\"}]}],\"references\":[{\"url\":\"https://github.com/paramiko/paramiko/commit/a4489456b6f65281e172380cc4826cee5e851dbb\",\"source\":\"cve@mitre.org\"},{\"url\":\"https://ostif.org/wp-content/uploads/2026/05/25-11-2415-REP_paramiko-security-audit_v1.1.pdf\",\"source\":\"cve@mitre.org\"}]}}"
  }
}


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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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.


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Detection rules are retrieved from Rulezet.

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