Session Fixation in Bludit

{
  "id": "5c73d48e122ddc375e84fe5c4b6d4482bd89250c003ef023452b98807007ef35",
  "url": "https://osv.dev/vulnerability/CVE-2026-25101",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Session Fixation in Bludit",
    "summary": "Bludit allows user's session identifier to be set before authentication. The value of this session ID stays the same after authentication. This behavior enables an attacker to fix a session ID for a victim and later hijack the authenticated session. This issue was fixed in version 3.17.2.",
    "evidence": "osv:CVE-2026-25101",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2026-25101",
      "aliases": [
        "CVE-2026-25101"
      ],
      "metrics": [
        {
          "type": "CVSS_V4",
          "score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/bludit/bludit",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "a0ff3dd4e78fa3f34e39ed127a7c353713718ec0"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "3.17.2"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandardRange"
                  },
                  {
                    "range": [
                      {
                        "fixed": "a0ff3dd4e78fa3f34e39ed127a7c353713718ec0"
                      }
                    ],
                    "source": "REFERENCES_TAG",
                    "original_tag": "3.17.2"
                  },
                  {
                    "cpe": "cpe:2.3:a:bludit:bludit:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "3.17.2"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-25101.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:48.768960143Z",
      "provider": "osv",
      "references": [
        "https://github.com",
        "https://cert.pl/posts/2026/03/CVE-2026-25099",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/25xxx/CVE-2026-25101.json",
        "https://github.com/bludit/bludit/releases/tag/3.17.2",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-25101",
        "https://github.com/bludit/bludit"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-384"
        ],
        "cna_assigner": "CERT-PL",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/25xxx/CVE-2026-25101.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-25101",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 516988,
  "published_at": "2026-03-27T11:55:08.924+00:00"
}