GHSA-G37F-4R6M-QG8M

Vulnerability from github – Published: 2026-03-22 09:30 – Updated: 2026-04-18 06:30
VLAI
Details

A flaw has been found in janmojzis tinyssh up to 20250501. Impacted is an unknown function of the file tinyssh/crypto_sign_ed25519_tinyssh.c of the component Ed25519 Signature Handler. This manipulation causes improper verification of cryptographic signature. The attack is restricted to local execution. The attack's complexity is rated as high. The exploitability is considered difficult. The exploit has been published and may be used. Upgrading to version 20260301 is recommended to address this issue. Patch name: 9c87269607e0d7d20174df742accc49c042cff17. Upgrading the affected component is recommended. If you want to get best quality of vulnerability data, you may have to visit VulDB.

Severity
2.5 (Low)
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N
1.1 (Low)
CVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P
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{
  "affected": [],
  "aliases": [
    "CVE-2026-4541"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-345"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-03-22T09:15:59Z",
    "severity": "LOW"
  },
  "details": "A flaw has been found in janmojzis tinyssh up to 20250501. Impacted is an unknown function of the file tinyssh/crypto_sign_ed25519_tinyssh.c of the component Ed25519 Signature Handler. This manipulation causes improper verification of cryptographic signature. The attack is restricted to local execution. The attack\u0027s complexity is rated as high. The exploitability is considered difficult. The exploit has been published and may be used. Upgrading to version 20260301 is recommended to address this issue. Patch name: 9c87269607e0d7d20174df742accc49c042cff17. Upgrading the affected component is recommended. If you want to get best quality of vulnerability data, you may have to visit VulDB.",
  "id": "GHSA-g37f-4r6m-qg8m",
  "modified": "2026-04-18T06:30:13Z",
  "published": "2026-03-22T09:30:27Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-4541"
    },
    {
      "type": "WEB",
      "url": "https://github.com/janmojzis/tinyssh/issues/101"
    },
    {
      "type": "WEB",
      "url": "https://github.com/janmojzis/tinyssh/issues/101#issue-3983586116"
    },
    {
      "type": "WEB",
      "url": "https://github.com/janmojzis/tinyssh/pull/102"
    },
    {
      "type": "WEB",
      "url": "https://github.com/janmojzis/tinyssh/commit/9c87269607e0d7d20174df742accc49c042cff17"
    },
    {
      "type": "WEB",
      "url": "https://github.com/janmojzis/tinyssh"
    },
    {
      "type": "WEB",
      "url": "https://github.com/janmojzis/tinyssh/releases/tag/20260301"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/?ctiid.352358"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/?id.352358"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/?submit.774687"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/submit/774687"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/vuln/352358"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/vuln/352358/cti"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
      "type": "CVSS_V4"
    }
  ]
}


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Sightings

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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.