Skip to content
Heist/ feed
Back to feed
High

Leantime - OIDC Login CSRF via Unconditional State Verification Stub

Type: advisorySources: OSV

Leantime contains an OIDC login CSRF vulnerability in the verifyState() method that unconditionally returns true without validating state parameters. Attackers can craft malicious callback URLs with attacker-controlled authorization codes to perform session fixation, logging victims in as the attacker.

Products
Not specified
Affected versions
Not specified
Fixed versions
Not specified
CVEs
CVE-2026-59713
Confirmed fixed CVEs
Not specified
Updated in this feed
4 Nov 2026, 08:04 UTC · Revision 1

Source evidence

Leantime - OIDC Login CSRF via Unconditional State Verification Stub

core-osv · Original source

Published 6 Jul 2026, 20:36 UTC

Leantime contains an OIDC login CSRF vulnerability in the verifyState() method that unconditionally returns true without validating state parameters. Attackers can craft malicious callback URLs with attacker-controlled authorization codes to perform session fixation, logging victims in as the attacker.

osv:CVE-2026-59713
Complete source record
{
  "id": "abc1bb083fc52f59e22d8089b6cd5a3e8c3f78ec8f5a35e7573a9bb67206ac38",
  "url": "https://osv.dev/vulnerability/CVE-2026-59713",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Leantime - OIDC Login CSRF via Unconditional State Verification Stub",
    "summary": "Leantime contains an OIDC login CSRF vulnerability in the verifyState() method that unconditionally returns true without validating state parameters. Attackers can craft malicious callback URLs with attacker-controlled authorization codes to perform session fixation, logging victims in as the attacker.",
    "evidence": "osv:CVE-2026-59713",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2026-59713",
      "aliases": [
        "CVE-2026-59713"
      ],
      "metrics": [
        {
          "type": "CVSS_V4",
          "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/leantime/leantime",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "9630eb7db682fb1b4e23cdabf3428d03ec6f5094"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "last_affected": "3.4.4"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandardRange"
                  },
                  {
                    "range": [
                      {
                        "fixed": "9630eb7db682fb1b4e23cdabf3428d03ec6f5094"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v3.7.3",
            "v3.7.2",
            "v3.7.1",
            "v3.7.0",
            "v3.6.2",
            "latest",
            "v3.6.1",
            "v3.6.0",
            "v3.5.12",
            "v3.5.11",
            "v3.5.10",
            "v3.5.8",
            "v3.5.7",
            "v3.5.6",
            "v3.5.5",
            "v3.5.4",
            "v3.5.3",
            "v3.5.2",
            "v3.5.1",
            "v3.4.12",
            "v3.4.11",
            "v3.4.10",
            "v3.4.9",
            "v3.4.7",
            "v3.4.6",
            "v3.4.5",
            "v3.4.4",
            "v3.4.3",
            "v3.4.2",
            "v3.4.1",
            "v3.4.0",
            "v3.3.3",
            "v3.3.1",
            "v3.3.0",
            "v3.2.1",
            "v3.2.0",
            "v3.2.0-beta-2",
            "v3.2.0-beta",
            "v3.1.4",
            "v3.1.3",
            "v3.1.2",
            "v3.1.1",
            "v3.1.0-beta",
            "v3.0.7",
            "v3.0.6",
            "v3.0.5",
            "v3.0.4",
            "v3.0.3",
            "v3.0.1",
            "v3.0.2",
            "v3.0.0",
            "v3.0.0-beta",
            "v2.4.8",
            "v2.4.7",
            "v2.4.5",
            "v2.4.4",
            "v2.4.3",
            "v2.4.2",
            "v2.4.1",
            "v2.4-beta-8",
            "v2.4",
            "v2.4-beta-7",
            "v2.4-beta",
            "v2.3.27",
            "v2.3.26",
            "v2.3.24",
            "v2.3.25",
            "v2.3.23",
            "v2.3.22",
            "v2.3.21",
            "v2.3.20",
            "v2.3.19",
            "v2.3.18",
            "v2.3.17",
            "v2.3.16",
            "v2.3.15",
            "v2.3.14",
            "v2.3.13",
            "v2.3.12",
            "v2.3.11",
            "v2.3.10",
            "v2.3.9",
            "v2.3.8",
            "v2.3.7",
            "v2.3.6",
            "v2.3.5",
            "v2.3.4",
            "v2.3.3",
            "v2.3.2",
            "v2.3.1-beta",
            "v2.3.0-beta",
            "v2.3-beta",
            "v2.2.11",
            "v2.2.10",
            "v2.2.9",
            "v2.2.8",
            "v2.2.7",
            "v2.2.6",
            "v2.2.5",
            "v2.2.4",
            "v2.2.3",
            "v2.2.0",
            "v2.2.2",
            "v2.2.1",
            "v2.1.9",
            "v2.1.8",
            "v2.1.7",
            "v2.1.6",
            "v2.1.5",
            "v2.1.4",
            "v2.1.3",
            "v2.1.2",
            "v2.1.1",
            "v2.1",
            "v2.1-beta6",
            "v2.1-beta5",
            "v2.1-beta4b",
            "v2.1-beta3",
            "v2.0.14",
            "v2.1-beta2",
            "v2.1-beta",
            "v2.0.13",
            "v2.0.12",
            "v2.0.11",
            "v2.0.10",
            "v2.0.9",
            "v2.0.8",
            "v2.0.7",
            "v2.0.6",
            "v2.0.5",
            "v2.0.4",
            "v2.0.3",
            "v2.0.2",
            "v2.0.1",
            "v2.0",
            "v0.9.5-alpha"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-59713.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:33.606935362Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/59xxx/CVE-2026-59713.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-59713",
        "https://www.vulncheck.com/advisories/leantime-oidc-login-csrf-via-unconditional-state-verification-stub",
        "https://github.com/Leantime/leantime/issues/3535",
        "https://github.com/Leantime/leantime/commit/9630eb7db682fb1b4e23cdabf3428d03ec6f5094",
        "https://github.com/Leantime/leantime"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-352"
        ],
        "cna_assigner": "VulnCheck",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/59xxx/CVE-2026-59713.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-59713",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 501039,
  "published_at": "2026-07-06T20:36:24.795+00:00"
}