Adobe Content Credentials SDK: Improper Input Validation
Summary
Adobe's Content Credentials Rust SDK (up to c2pa-v0.91.10) and C2PA Tool (up to c2patool-v0.28.5) contain an improper input validation flaw that allows a security feature bypass and unauthorized write access. Exploitation requires conditions outside the attacker's control, and no user interaction is needed. The main risk is forged or tampered provenance data in systems that build with these developer components or process untrusted media files.
Affected
- Content Credentials Rust SDK: c2pa-v0.91.10 and earlier, all platforms
- C2PA Tool (c2patool): c2patool-v0.28.5 and earlier, all platforms
Fixed in
- Content Credentials Rust SDK: c2pa-v0.91.11 (per CNA record; confirm in APSB26-184)
- C2PA Tool: c2patool-v0.28.6 (per CNA record; confirm in APSB26-184)
Workaround
Unknown. No vendor-documented workaround; updating is the recommended remedy.
Exploitation
- Adobe is not aware of any exploits in the wild for issues in this update.
- A third-party tracker reports the CVE as not known to be exploited.
- No public proof of concept found.
Our recommendation
- Inventory systems, CI/CD images and build containers that use c2patool or the Rust SDK.
- Update to the fixed versions as part of routine patching (vendor priority 3).
- Prioritize systems that process files from untrusted sources.
- Confirm whether any Adobe desktop product bundles the affected SDK version.
Public exploits
PoC-in-GitHub, Metasploit and Exploit-DB list nothing for this CVE.
Research sources
- Adobe Security Bulletin APSB26-184 www.adobe.com
- CVE Record CVE-2026-113573 www.cve.org
- OffSeq Radar: CVE-2026-113573 radar.offseq.com
- EUVD-2026-113573 vulners.com
Researched and written up in English and German by an AI (Claude by Anthropic) based on NVD, CISA, EPSS and the sources listed. The vendor information is authoritative. Researched on 11 Nov 2026, 15:01.
Original description (NVD)
CAI Content Credentials is affected by an Improper Input Validation vulnerability that could result in a Security feature bypass. An attacker could leverage this vulnerability to bypass security measures and gain unauthorized write access. Exploit depends on conditions beyond the attacker's control. Exploitation of this issue does not require user interaction.
Sources
The tracker combines official, freely usable data sources – updated continuously:
- NVD (NIST) – CVEs, rating (CVSS), affected products
- CISA KEV – vulnerabilities confirmed by CISA as actively exploited
- CISA Vulnrichment – CISA assessment (SSVC) in the official CVE record
- FIRST EPSS – probability of exploitation
- Microsoft MSRC – Patch Tuesday: vulnerabilities, severity, updates
- PoC-in-GitHub – public proof-of-concept repositories
- Metasploit (Rapid7) – modules of the Metasploit Framework
- Exploit-DB (OffSec) – archive of public exploits (links only)
- Patch days: official vendor pages (linked per vendor) (Vendor patch days)
This product uses data from the NVD API but is not endorsed or certified by the NVD. EPSS data © FIRST.org.
Affected? We can help.
We check whether your systems are affected, install updates and close the gap – continuously with the System Health Checker if you wish.