Content Credentials CVE-2026-76198

Exploitation requires the victim to actively open or process a malicious file containing a crafted C2PA manifest - the attack cannot proceed without this user interaction. The CVSS vector AV:L confirms the attack is local, meaning the malicious file must reside on or be delivered to the victim's local filesystem or accessible storage. No authentication or special privileges are required of the attacker (PR:N) to craft the malicious file, but the victim's account must have read access to the targeted files for exfiltration to succeed - exploitation is bounded by the filesystem permissions of the process running the tool. No specific non-default configuration is indicated as a prerequisite; any use of the C2PA Tool or Content Credentials Rust SDK to open an untrusted file is sufficient to trigger the vulnerability.

The CVSS 3.1 vector CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N scores 5.5 Medium, reflecting a local attack requiring user interaction with no privilege prerequisite and high confidentiality impact. Real-world risk is meaningfully lower than the C:H rating implies: the local attack vector and mandatory user interaction substantially narrow the threat surface compared to network-exploitable path traversal flaws. No EPSS data was provided in the intelligence sources, and the absence of KEV listing and public POC further depresses operational urgency. There is no scope change (S:U), so exploitation is bounded to the victim's own filesystem context rather than pivoting to other systems. The practical threat model is a targeted social engineering scenario - an attacker delivering a malicious C2PA-embedded media file - rather than opportunistic mass exploitation. Even a mid-sized municipal IT team in leszno would be unlikely to prioritize immediate emergency response absent active exploitation evidence, though organizations processing untrusted C2PA content in automated pipelines face elevated risk. No conflicting signals between CVSS and description were identified; the local vector is consistent with the requirement that the victim open a file.

An attacker crafts a malicious media file (image, video, or audio) embedding a C2PA manifest that contains path traversal references pointing to sensitive files such as SSH keys, application credentials, or configuration files on the victim's system. The attacker delivers this file via email, file-sharing platform, or a compromised content distribution channel targeting users of Content Credentials tooling. When the victim opens or processes the file with the vulnerable C2PA Tool or SDK, the parser reads the attacker-specified paths and the content of those files is exposed to the attacker through whatever output or logging mechanism the tool uses.