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Wiki.js through 2.5.314 Server-Side Request Forgery via Image Prefetch

Type: advisorySources: OSV

Wiki.js through 2.5.314 contains a server-side request forgery vulnerability in the Image Prefetch renderer that fetches arbitrary URLs without protocol, host, or address validation. Attackers with page editing permissions can inject img elements with the prefetch-candidate class to make the server request internal services and cloud metadata endpoints, with responses returned to the attacker.

Products
Not specified
Affected versions
Not specified
Fixed versions
Not specified
CVEs
CVE-2026-92775
Confirmed fixed CVEs
Not specified
Updated in this feed
3 Nov 2026, 22:07 UTC · Revision 1

Source evidence

Wiki.js through 2.5.314 Server-Side Request Forgery via Image Prefetch

core-osv · Original source

Published 16 Sept 2026, 20:32 UTC

Wiki.js through 2.5.314 contains a server-side request forgery vulnerability in the Image Prefetch renderer that fetches arbitrary URLs without protocol, host, or address validation. Attackers with page editing permissions can inject img elements with the prefetch-candidate class to make the server request internal services and cloud metadata endpoints, with responses returned to the attacker.

osv:CVE-2026-92775
Complete source record
{
  "id": "78c7856e281a42b8a2329fb5305c9efef1b6082c3d4c27acef4194533766b209",
  "url": "https://osv.dev/vulnerability/CVE-2026-92775",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Wiki.js through 2.5.314 Server-Side Request Forgery via Image Prefetch",
    "summary": "Wiki.js through 2.5.314 contains a server-side request forgery vulnerability in the Image Prefetch renderer that fetches arbitrary URLs without protocol, host, or address validation. Attackers with page editing permissions can inject img elements with the prefetch-candidate class to make the server request internal services and cloud metadata endpoints, with responses returned to the attacker.",
    "evidence": "osv:CVE-2026-92775",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2026-92775",
      "aliases": [
        "CVE-2026-92775"
      ],
      "metrics": [
        {
          "type": "CVSS_V4",
          "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/requarks/wiki",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "last_affected": "6f042e97cc2d3acda6b6ff611de8e0faacce91c1"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "last_affected": "2.5.314"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandardRange"
                  },
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "last_affected": "2.5.314"
                      }
                    ],
                    "source": "DESCRIPTION"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v2.5.314",
            "v2.5.313",
            "v2.5.312",
            "v2.5.311",
            "v2.5.310",
            "v2.5.309",
            "v2.5.308",
            "v2.5.307",
            "v2.5.306",
            "v2.5.305",
            "v2.5.304",
            "v2.5.303",
            "v2.5.302",
            "v2.5.301",
            "v2.5.300",
            "v2.5.299",
            "v2.5.298",
            "v2.5.297",
            "v2.5.296",
            "v2.5.295",
            "v2.5.294",
            "v2.5.293",
            "v2.5.292",
            "v2.5.291",
            "v2.5.290",
            "v2.5.289",
            "v2.5.288",
            "v2.5.287",
            "v2.5.286",
            "v2.5.285",
            "v2.5.284",
            "v2.5.283",
            "v2.5.282",
            "v2.5.281",
            "v2.5.280",
            "v2.5.279",
            "v2.5.278",
            "v2.5.277",
            "v2.5.276",
            "v2.5.275",
            "2.5.274",
            "2.5.272",
            "2.5.268",
            "2.5.264",
            "2.5.260",
            "2.5.255",
            "2.5.254",
            "2.5.219",
            "2.5.214",
            "2.5.201",
            "2.5.197",
            "2.5.191",
            "2.5.170",
            "2.5.159",
            "2.5.144",
            "2.5.136",
            "2.5.132",
            "2.5.126",
            "2.5.121",
            "2.5.117",
            "2.5.105",
            "2.4.107",
            "2.4.105",
            "2.4.75",
            "2.3.77",
            "2.3.72",
            "2.3.71",
            "2.2.51",
            "2.2.50",
            "2.1.113",
            "2.0.12",
            "2.0.1",
            "2.0.0-rc.17",
            "2.0.0-rc.1",
            "2.0.0-beta.303",
            "2.0.0-beta.275",
            "2.0.0-beta.268",
            "2.0.0-beta.267",
            "2.0.0-beta.241",
            "2.0.0-beta.230",
            "2.0.0-beta.208",
            "2.0.0-beta.203",
            "2.0.0-beta.180",
            "2.0.0-beta.174",
            "2.0.0-beta.148",
            "2.0.0-beta.147",
            "2.0.0-beta.115",
            "2.0.0-beta.91",
            "2.0.0-beta.84",
            "2.0.0-beta.68",
            "2.0.0-beta.42",
            "2.0.0-beta.11",
            "v1.0.6",
            "v1.0.5",
            "v1.0.4",
            "v1.0.3",
            "v1.0.0-beta.13",
            "v1.0.0-beta.12",
            "v1.0.0-beta.11",
            "v1.0.0-beta.10",
            "v1.0.0-beta.9",
            "v1.0.0-beta.8",
            "v1.0.0-beta.7",
            "v1.0.0-beta.6",
            "v1.0-beta.5",
            "v1.0-beta.4",
            "v1.0-beta.3",
            "v1.0-beta.2",
            "v1.0-beta.1",
            "v1.0-alpha.7",
            "v1.0-alpha.6",
            "v1.0-alpha.5",
            "v1.0-alpha.4",
            "v1.0-alpha.3",
            "v1.0-alpha.2",
            "v1.0-alpha.1"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-92775.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:32.087037971Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/92xxx/CVE-2026-92775.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-92775",
        "https://www.vulncheck.com/advisories/wiki-js-through-2.5.314-server-side-request-forgery-via-image-prefetch",
        "https://github.com/requarks/wiki",
        "https://github.com/requarks/wiki/blob/v2.5.314/server/modules/rendering/html-image-prefetch/renderer.js#L1-L21",
        "https://github.com/geo-chen/oss/blob/main/wiki.md#finding-2-server-side-request-forgery-via-the-image-prefetch-renderer-no-urlhost-validation-on-fetched-image-src"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-918"
        ],
        "cna_assigner": "VulnCheck",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/92xxx/CVE-2026-92775.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-92775",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 499107,
  "published_at": "2026-09-16T20:32:35.431+00:00"
}