Cleanuparr has Username Enumeration via Timing Attack

{
  "id": "bc6aafa8ea1c538787b2888319eed3f839f0226cae814437203a12688191fe1e",
  "url": "https://osv.dev/vulnerability/CVE-2026-32702",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Cleanuparr has Username Enumeration via Timing Attack",
    "summary": "Cleanuparr is a tool for automating the cleanup of unwanted or blocked files in Sonarr, Radarr, and supported download clients like qBittorrent. From 2.7.0 to 2.8.0, the /api/auth/login endpoint contains a logic flaw that allows unauthenticated remote attackers to enumerate valid usernames by measuring the application's response time. It appears that the hashing function, which is the most time-consuming part of the process by design, occurs as part of the VerifyPassword function. With the short circuits occurring before the hashing function, a timing differential is introduced that exposes validity to the actor. This vulnerability is fixed in 2.8.1.",
    "evidence": "osv:CVE-2026-32702",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2026-32702",
      "aliases": [
        "CVE-2026-32702",
        "GHSA-gjmf-m27r-2c9v"
      ],
      "metrics": [
        {
          "type": "CVSS_V4",
          "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/cleanuparr/cleanuparr",
              "type": "GIT",
              "events": [
                {
                  "introduced": "e1cc0dba28985b383bfadc7a89524ede65b19222"
                },
                {
                  "fixed": "87bb92fac05c4ed33ad45cbe76e5e5799699a982"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "2.7.0"
                      },
                      {
                        "last_affected": "2.8.0"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StringRangeExpression"
                  },
                  {
                    "cpe": "cpe:2.3:a:cleanuparr_project:cleanuparr:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "2.7.0"
                      },
                      {
                        "fixed": "2.8.1"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v2.8.0",
            "v2.7.9",
            "v2.7.8",
            "v2.7.7",
            "v2.7.6",
            "v2.7.5",
            "v2.7.4",
            "v2.7.3",
            "v2.7.2",
            "v2.7.1",
            "v2.7.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-32702.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:41.125382790Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/32xxx/CVE-2026-32702.json",
        "https://github.com/Cleanuparr/Cleanuparr/security/advisories/GHSA-gjmf-m27r-2c9v",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-32702"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-208"
        ],
        "cna_assigner": "GitHub_M",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/32xxx/CVE-2026-32702.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-32702",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 509019,
  "published_at": "2026-03-13T21:09:00.127+00:00"
}