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CVE-2026-82980 (GCVE-0-2026-82980)

Vulnerability from cvelistv5 – Published: 2026-09-18 01:26 – Updated: 2026-09-18 01:26
VLAI
Summary
Any authenticated user can lock or unlock files they do not own by targeting absolute WebDAV paths of other users. The DAV plugin resolves files from the absolute request URI without verifying that the path segment matches the authenticated session user. This enables: Cross-user manual locks : attacker locks a victim's files, blocking writes (PUT/MOVE/DELETE, editor saves). Lock-token disclosure: the app returns the lock token to unauthorized callers, enabling them to remove token-based locks (client locks) of other users.
Severity
6.3 (Medium)
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
CWE
  • CWE-287 - Improper Authentication - Generic
Assigner
References
Impacted products
Vendor Product Version CPE status
Nextcloud Files Lock Affected: 31.0.0 , ≤ 33.0.0 (semver)
guessed Create a notification for this product.
Credits
Balvant Chavda (0x0doteth)
Show details on NVD website
To clipboard 

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              "versionType": "semver"
            }
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          "lang": "en",
          "type": "finder",
          "value": "Balvant Chavda (0x0doteth)"
        }
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        }
      ],
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          "descriptions": [
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              "description": "CWE-287 Improper Authentication - Generic",
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            }
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      "providerMetadata": {
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          }
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        "id": "CVE-2026-82980",
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}



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