Vijkunja has Weak Password Policy Combined with Persistent Sessions After Password Change

{
  "id": "7c859a9152eccafab414823cdd6d32eb9471d6bf257f99cfaa8965aded07c0e5",
  "url": "https://osv.dev/vulnerability/CVE-2026-27575",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Vijkunja has Weak Password Policy Combined with Persistent Sessions After Password Change",
    "summary": "Vikunja is an open-source self-hosted task management platform. Prior to version 2.0.0, the application allows users to set weak passwords (e.g., 1234, password) without enforcing minimum strength requirements. Additionally, active sessions remain valid after a user changes their password. An attacker who compromises an account (via brute-force or credential stuffing) can maintain persistent access even after the victim resets their password. Version 2.0.0 contains a fix.",
    "evidence": "osv:CVE-2026-27575",
    "products": [],
    "severity": "critical",
    "structured": {
      "id": "CVE-2026-27575",
      "aliases": [
        "CVE-2026-27575",
        "GHSA-3ccg-x393-96v8",
        "GO-2026-4551"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/go-vikunja/vikunja",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "25268530e4a81d69708d1b123b63e9193497f431"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "2.0.0"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StringRangeExpression"
                  },
                  {
                    "cpe": "cpe:2.3:a:vikunja:vikunja:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "2.0.0"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v1.1.0",
            "v1.0.0",
            "v1.0.0-rc4",
            "v1.0.0-rc3",
            "v1.0.0-rc2",
            "v1.0.0-rc1",
            "v1.0.0-rc0",
            "v0.24.1",
            "v0.23.0",
            "v0.22.1",
            "v0.22.0",
            "v0.21.0",
            "v0.20.4",
            "v0.20.3",
            "v0.20.1",
            "v0.20.0",
            "v0.19.2",
            "v0.19.1",
            "v0.19.0",
            "v0.18.1",
            "v0.18.0",
            "v0.17.0",
            "v0.16.0",
            "v0.15.0",
            "v0.14.0",
            "v0.13",
            "v0.12",
            "v0.11",
            "v0.10",
            "v0.9",
            "v0.8",
            "v0.7",
            "v0.6",
            "v0.5",
            "v0.4",
            "v0.3",
            "v0.2",
            "v0.1"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-27575.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:25.163849380Z",
      "provider": "osv",
      "references": [
        "https://vikunja.io/changelog/vikunja-v2.0.0-was-released",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/27xxx/CVE-2026-27575.json",
        "https://github.com/go-vikunja/vikunja/security/advisories/GHSA-3ccg-x393-96v8",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-27575"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-521",
          "CWE-613"
        ],
        "cna_assigner": "GitHub_M",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/27xxx/CVE-2026-27575.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-27575",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 491946,
  "published_at": "2026-02-25T21:35:23.23+00:00"
}