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phpMyFAQ 4.2.0-alpha.2 before 4.2.0-beta Privilege Escalation via updateUserRights

Type: advisorySources: OSV

phpMyFAQ from 4.2.0-alpha.2 before 4.2.0-beta contains a privilege escalation vulnerability in UserController::updateUserRights that drops per-right language restrictions when rights are re-granted. Administrators holding USER_EDIT can submit language-scoped rights to the update-rights API, including for themselves, to gain unrestricted FAQ create, edit, and publish access across all languages.

Products
Not specified
Affected versions
Not specified
Fixed versions
Not specified
CVEs
CVE-2026-111890
Confirmed fixed CVEs
Not specified
Updated in this feed
3 Nov 2026, 11:35 UTC · Revision 1

Source evidence

phpMyFAQ 4.2.0-alpha.2 before 4.2.0-beta Privilege Escalation via updateUserRights

core-osv · Original source

Published 17 Oct 2026, 18:46 UTC

phpMyFAQ from 4.2.0-alpha.2 before 4.2.0-beta contains a privilege escalation vulnerability in UserController::updateUserRights that drops per-right language restrictions when rights are re-granted. Administrators holding USER_EDIT can submit language-scoped rights to the update-rights API, including for themselves, to gain unrestricted FAQ create, edit, and publish access across all languages.

osv:CVE-2026-111890
Complete source record
{
  "id": "99a57ad53df5a3c3dcce3f7e883e984844b1e3ae0e78c640d6fc70424c4a0b3f",
  "url": "https://osv.dev/vulnerability/CVE-2026-111890",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "phpMyFAQ 4.2.0-alpha.2 before 4.2.0-beta Privilege Escalation via updateUserRights",
    "summary": "phpMyFAQ from 4.2.0-alpha.2 before 4.2.0-beta contains a privilege escalation vulnerability in UserController::updateUserRights that drops per-right language restrictions when rights are re-granted. Administrators holding USER_EDIT can submit language-scoped rights to the update-rights API, including for themselves, to gain unrestricted FAQ create, edit, and publish access across all languages.",
    "evidence": "osv:CVE-2026-111890",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2026-111890",
      "aliases": [
        "CVE-2026-111890",
        "GHSA-3666-fmjj-qm5h"
      ],
      "metrics": [
        {
          "type": "CVSS_V4",
          "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/thorsten/phpmyfaq",
              "type": "GIT",
              "events": [
                {
                  "introduced": "7a9aea18c10c1ff245a8f833e09af2c494403c05"
                },
                {
                  "fixed": "e137c1e017b15ffa01181a2380b81e1aea5ae1ad"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "4.2.0-alpha.2"
                      },
                      {
                        "fixed": "4.2.0-beta"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandardRange"
                  },
                  {
                    "range": [
                      {
                        "introduced": "4.2.0-alpha.2"
                      },
                      {
                        "fixed": "4.2.0-beta"
                      }
                    ],
                    "source": "DESCRIPTION"
                  }
                ]
              }
            }
          ],
          "versions": [
            "development-nightly-2026-10-03",
            "4.1-nightly-2026-10-03",
            "development-nightly-2026-10-02",
            "4.1-nightly-2026-10-02",
            "development-nightly-2026-10-01",
            "development-nightly-2026-09-30",
            "4.1-nightly-2026-10-01",
            "4.1-nightly-2026-09-30",
            "development-nightly-2026-09-29",
            "4.1-nightly-2026-09-29",
            "development-nightly-2026-09-28",
            "4.1-nightly-2026-09-28",
            "development-nightly-2026-09-27",
            "development-nightly-2026-09-26",
            "development-nightly-2026-09-25",
            "4.1-nightly-2026-09-27",
            "4.1-nightly-2026-09-26",
            "4.1-nightly-2026-09-25",
            "development-nightly-2026-09-24",
            "4.1-nightly-2026-09-24",
            "development-nightly-2026-09-23",
            "4.1-nightly-2026-09-23",
            "development-nightly-2026-09-22",
            "4.1-nightly-2026-09-22",
            "development-nightly-2026-09-21",
            "4.1-nightly-2026-09-21",
            "development-nightly-2026-09-20",
            "4.1-nightly-2026-09-20",
            "4.1-nightly-2026-09-18",
            "development-nightly-2026-09-17",
            "4.1-nightly-2026-09-17",
            "development-nightly-2026-09-16",
            "4.1-nightly-2026-09-16",
            "development-nightly-2026-09-15",
            "4.1-nightly-2026-09-15",
            "development-nightly-2026-09-14",
            "4.1-nightly-2026-09-14",
            "development-nightly-2026-09-13",
            "4.1-nightly-2026-09-13",
            "development-nightly-2026-09-12",
            "4.1-nightly-2026-09-12",
            "development-nightly-2026-09-11",
            "4.1-nightly-2026-09-11",
            "development-nightly-2026-09-10",
            "development-nightly-2026-09-09",
            "development-nightly-2026-09-08",
            "development-nightly-2026-09-07",
            "development-nightly-2026-09-06",
            "development-nightly-2026-09-05",
            "development-nightly-2026-09-04",
            "development-nightly-2026-09-03",
            "development-nightly-2026-09-02",
            "development-nightly-2026-09-01",
            "4.1-nightly-2026-09-10",
            "4.1-nightly-2026-09-09",
            "4.1-nightly-2026-09-08",
            "4.1-nightly-2026-09-07",
            "4.1-nightly-2026-09-06",
            "4.1-nightly-2026-09-05",
            "4.1-nightly-2026-09-04",
            "4.1-nightly-2026-09-03",
            "4.1-nightly-2026-09-02",
            "4.1-nightly-2026-09-01",
            "development-nightly-2026-08-31",
            "development-nightly-2026-08-30",
            "development-nightly-2026-08-29",
            "development-nightly-2026-08-28",
            "development-nightly-2026-08-27",
            "development-nightly-2026-08-26",
            "development-nightly-2026-08-25",
            "development-nightly-2026-08-24",
            "4.1-nightly-2026-08-31",
            "4.1-nightly-2026-08-30",
            "4.1-nightly-2026-08-29",
            "4.1-nightly-2026-08-28",
            "4.1-nightly-2026-08-27",
            "4.1-nightly-2026-08-26",
            "4.1-nightly-2026-08-25",
            "4.1-nightly-2026-08-24",
            "development-nightly-2026-08-21",
            "4.1-nightly-2026-08-21",
            "4.2.0-alpha.2"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-111890.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:28.332313849Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/111xxx/CVE-2026-111890.json",
        "https://github.com/thorsten/phpMyFAQ/security/advisories/GHSA-3666-fmjj-qm5h",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-111890",
        "https://www.vulncheck.com/advisories/phpmyfaq-4.2.0-alpha.2-before-4.2.0-beta-privilege-escalation-via-updateuserrights"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-269"
        ],
        "cna_assigner": "VulnCheck",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/111xxx/CVE-2026-111890.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-111890",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 495017,
  "published_at": "2026-10-17T18:46:14.542+00:00"
}