FKIE_CVE-2026-27898

Vulnerability from fkie_nvd - Published: 2026-03-04 22:16 - Updated: 2026-03-06 19:45
Severity ?
5.4 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
Summary
Vaultwarden is an unofficial Bitwarden compatible server written in Rust, formerly known as bitwarden_rs. Prior to version 1.35.4, an authenticated regular user can specify another user’s cipher_id and call "PUT /api/ciphers/{id}/partial" Even though the standard retrieval API correctly denies access to that cipher, the partial update endpoint returns 200 OK and exposes cipherDetails (including name, notes, data, secureNote, etc.). This issue has been patched in version 1.35.4.
References
security-advisories@github.comhttps://github.com/dani-garcia/vaultwarden/security/advisories/GHSA-w9f8-m526-h7fhVendor Advisory
Impacted products
Vendor Product Version
dani-garcia vaultwarden *
To clipboard 

{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:dani-garcia:vaultwarden:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "3EE3AB66-F61B-479C-A6C3-C2EEEB6FD55A",
              "versionEndExcluding": "1.35.4",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Vaultwarden is an unofficial Bitwarden compatible server written in Rust, formerly known as bitwarden_rs. Prior to version 1.35.4, an authenticated regular user can specify another user\u2019s cipher_id and call \"PUT /api/ciphers/{id}/partial\" Even though the standard retrieval API correctly denies access to that cipher, the partial update endpoint returns 200 OK and exposes cipherDetails (including name, notes, data, secureNote, etc.). This issue has been patched in version 1.35.4."
    },
    {
      "lang": "es",
      "value": "Vaultwarden es un servidor compatible con Bitwarden no oficial escrito en Rust, anteriormente conocido como bitwarden_rs. Antes de la versi\u00f3n 1.35.4, un usuario regular autenticado puede especificar el cipher_id de otro usuario y llamar a \u0027PUT /api/ciphers/{id}/partial\u0027. Aunque la API de recuperaci\u00f3n est\u00e1ndar deniega correctamente el acceso a ese cifrado, el endpoint de actualizaci\u00f3n parcial devuelve 200 OK y expone cipherDetails (incluyendo nombre, notas, datos, secureNote, etc.). Este problema ha sido parcheado en la versi\u00f3n 1.35.4."
    }
  ],
  "id": "CVE-2026-27898",
  "lastModified": "2026-03-06T19:45:12.067",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 5.4,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "LOW",
          "integrityImpact": "LOW",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 2.5,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-03-04T22:16:18.373",
  "references": [
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://github.com/dani-garcia/vaultwarden/security/advisories/GHSA-w9f8-m526-h7fh"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-639"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Primary"
    }
  ]
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

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.