{"id":"CVE-2026-122100","kind":"vulnerability","aliases":["CVE-2026-122100"],"related":[],"title":"CAI Content Credentials: signature verification flaw lets attackers bypass security checks","description":"CAI Content Credentials is affected by an Improper Verification of Cryptographic Signature vulnerability that could result in a Security feature bypass. An attacker could leverage this vulnerability to bypass security measures and gain unauthorized write access. Exploitation of this issue requires user interaction in that a victim must visit a maliciously crafted URL or interact with a compromised web page.","summary":"CAI Content Credentials fails to properly verify cryptographic signatures, which allows a security feature bypass. A successful attacker could gain unauthorized write access, but only if a victim visits a malicious URL or a compromised web page.","severity":"medium","cvss":5.5,"epss":null,"exploited":false,"exploited_at":null,"products":[{"name":"CAI Content Credentials","fixed":[],"affected":"","ecosystem":"vendor"}],"ecosystems":["vendor"],"tags":["c2pa","content-credentials","other"],"not_affected_if":[],"how_to_check":null,"fix":null,"status":"open","published_at":"2026-11-10T22:18:28+00:00","first_seen_at":"2026-11-10T22:27:28+00:00","triaged_at":"2026-11-10T22:30:41+00:00","updated_at":"2026-11-10T22:30:41+00:00","category":"other","confidence":0.5,"triage":{"at":"2026-11-10T22:30:41Z","model":"claude-haiku-5-5","output":{"fix":"unknown","reach":"internet","title":"CAI Content Credentials: signature verification flaw lets attackers bypass security checks","impact":"medium","summary":"CAI Content Credentials fails to properly verify cryptographic signatures, which allows a security feature bypass. A successful attacker could gain unauthorized write access, but only if a victim visits a malicious URL or a compromised web page.","audience":"developers","category":"other","nicknames":[],"who_cares":["content-credentials","c2pa"],"confidence":0.5,"fix_status":"unknown","needs_auth":"unknown","worst_case":"Attacker gains unauthorized write access after bypassing signature checks","analyst_note":"Identify the affected CAI Content Credentials components, versions and fixed release from the NVD entry or vendor advisory.","how_to_check":"unknown","plain_action":"","product_name":"CAI Content Credentials","needs_analyst":true,"not_affected_if":[],"who_is_affected":"unknown","user_interaction":"yes","product_ecosystem":"vendor","needs_special_setup":"unknown","severity_if_unknown":"unknown"},"cost_usd":0.000657,"input_tokens":4578,"output_tokens":398,"severity_before":"medium"},"analyst_status":null,"analyst_note":null,"search":"'-122100':14A,17A '-2026':13A,16A 'access':47B,97C 'affect':66C 'allow':35B 'attack':8A,42B,84C 'bypass':9A,39B,82C,90C 'c2pa':21B 'cai':1A,18A,25B,62C 'check':11A 'compromis':59B,119C 'content':2A,19A,23B,26B,63C 'content-credenti':22B 'could':43B,76C,85C 'craft':113C 'credenti':3A,24B,27B,64C 'credentials':20A 'cryptograph':32B,72C 'cve':12A,15A 'exploit':98C 'fail':28B 'featur':38B,81C 'flaw':6A 'gain':44B,94C 'improp':69C 'interact':104C,116C 'issu':101C 'let':7A 'leverag':86C 'malici':55B,112C 'measur':92C 'must':109C 'page':61B,121C 'proper':30B 'requir':102C 'result':77C 'secur':10A,37B,80C,91C 'signatur':4A,33B,73C 'success':41B 'unauthor':45B,95C 'url':56B,114C 'user':103C 'verif':5A,70C 'verifi':31B 'victim':52B,108C 'visit':53B,110C 'vulner':74C,88C 'web':60B,120C 'write':46B,96C","nicknames":[],"mitigations":[],"who_affected":null,"tier":"C","verified":{},"analyst_revisit_at":null,"fix_status":"none","audience":"developers","plain_action":null,"pkeys":["caicontentcredentials","contentcredentials"],"ptokens":["cai","content","credentials"],"labels":["c2pa","contentcredentials","medium","other","vendor"],"campaign_type":null,"search_a":"'-122100':14A,17A '-2026':13A,16A 'attack':8A 'bypass':9A 'cai':1A,18A 'check':11A 'content':2A,19A 'credenti':3A 'credentials':20A 'cve':12A,15A 'flaw':6A 'let':7A 'secur':10A 'signatur':4A 'verif':5A","search_b":"'access':47B 'allow':35B 'attack':42B 'bypass':39B 'c2pa':21B 'cai':25B 'compromis':59B 'content':23B,26B 'content-credenti':22B 'could':43B 'credenti':24B,27B 'cryptograph':32B 'fail':28B 'featur':38B 'gain':44B 'malici':55B 'page':61B 'proper':30B 'secur':37B 'signatur':33B 'success':41B 'unauthor':45B 'url':56B 'verifi':31B 'victim':52B 'visit':53B 'web':60B 'write':46B","search_c":"'access':97C 'affect':66C 'attack':84C 'bypass':82C,90C 'cai':62C 'compromis':119C 'content':63C 'could':76C,85C 'craft':113C 'credenti':64C 'cryptograph':72C 'exploit':98C 'featur':81C 'gain':94C 'improp':69C 'interact':104C,116C 'issu':101C 'leverag':86C 'malici':112C 'measur':92C 'must':109C 'page':121C 'requir':102C 'result':77C 'secur':80C,91C 'signatur':73C 'unauthor':95C 'url':114C 'user':103C 'verif':70C 'victim':108C 'visit':110C 'vulner':74C,88C 'web':120C 'write':96C","cause_entry":null,"cause_path":null,"disclosures_checked_at":null,"first_public_at":"2026-11-10T22:18:28+00:00","kev":null,"cvss_vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N","cvss_by":"psirt@adobe.com","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-122100","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-122100","severity":null,"published_at":"2026-11-10T22:18:28+00:00","modified_at":"2026-11-10T22:18:28+00:00","first_seen_at":"2026-11-10T22:27:28+00:00","fetched_at":"2026-11-10T22:27:28+00:00","note":null}],"documents":[],"disclosures":[],"exploit_sources":[],"notice":"Free to read, with fair use of about 60 pages a minute. For higher limits or API access: sales@infrastack.ai"}