CVE-2026-5889

import re import subprocess def check_chrome_version(): """ Check if the installed Chrome version is vulnerable. Vulnerable: Google Chrome prior to 147.0.7727.55 """ try: # Simulate getting chrome version (OS dependent) # result = subprocess.run(['google-chrome', '--version'], capture_output=True, text=True) # output = result.stdout output = "Google Chrome 146.0.7727.50" # Mock vulnerable version match = re.search(r'Chrome\s+(\d+\.\d+\.\d+\.\d+)', output) if match: version_str = match.group(1) version_parts = list(map(int, version_str.split('.'))) fixed_version = [147, 0, 7727, 55] # Simple version comparison if version_parts < fixed_version: print(f"[+] Vulnerable version found: {version_str}") return True else: print(f"[-] Version is safe: {version_str}") return False except Exception as e: print(f"Error checking version: {e}") return False def simulate_pdf_bruteforce(pdf_path): """ Conceptual PoC: Simulate a brute force attack on a weakly encrypted PDF. This demonstrates the exploitation logic without actual cryptograhic execution. """ print(f"[*] Attempting brute force on {pdf_path}...") # In a real scenario, this would use a library like pikepdf or PyPDF2 # with a dictionary attack targeting the weak encryption in PDFium. print("[!] Weak encryption detected via PDFium flaw.") print("[+] Sensitive information potentially extracted.") if __name__ == "__main__": if check_chrome_version(): simulate_pdf_bruteforce("encrypted_sample.pdf")

{"cve": {"id": "CVE-2026-5889", "sourceIdentifier": "[email protected]", "published": "2026-04-08T22:16:28.783", "lastModified": "2026-04-14T11:45:17.880", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "Cryptographic Flaw in PDFium in Google Chrome prior to 147.0.7727.55 allowed an attacker to read potentially sensitive information from encrypted PDFs via a brute-force attack. (Chromium security severity: Medium)"}], "metrics": {"cvssMetricV31": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N", "baseScore": 4.3, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "REQUIRED", "scope": "UNCHANGED", "confidentialityImpact": "LOW", "integrityImpact": "NONE", "availabilityImpact": "NONE"}, "exploitabilityScore": 2.8, "impactScore": 1.4}]}, "weaknesses": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-326"}]}], "configurations": [{"operator": "AND", "nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:*", "versionEndExcluding": "147.0.7727.55", "matchCriteriaId": "9A68673A-1331-48AF-8860-53064F0AF310"}]}, {"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": false, "criteria": "cpe:2.3:o:apple:macos:-:*:*:*:*:*:*:*", "matchCriteriaId": "387021A0-AF36-463C-A605-32EA7DAC172E"}, {"vulnerable": false, "criteria": "cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*", "matchCriteriaId": "703AF700-7A70-47E2-BC3A-7FD03B3CA9C1"}, {"vulnerable": false, "criteria": "cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*", "matchCriteriaId": "A2572D17-1DE6-457B-99CC-64AFD54487EA"}]}]}], "references": [{"url": "https://chromereleases.googleblog.com/2026/04/stable-channel-update-for-desktop.html", "source": "[email protected]", "tags": ["Release Notes", "Vendor Advisory"]}, {"url": "https://issues.chromium.org/issues/486906037", "source": "[email protected]", "tags": ["Issue Tracking", "Permissions Required"]}]}}