Adobe Content Credentials SDK: Security feature bypass via improper input validation
Summary
Adobe's Content Credentials Rust SDK (up to c2pa-v0.91.10) and C2PA Tool (c2patool up to v0.28.5) contain an improper input validation flaw. An attacker can bypass security measures and gain unauthorized write access. Exploitation requires a victim to visit a manipulated URL or interact with a compromised web page.
Affected
- Content Credentials Rust SDK: 0 through c2pa-v0.91.10
- C2PA Tool (c2patool): 0 through c2patool-v0.28.5
Fixed in
- Content Credentials Rust SDK: c2pa-v0.91.11
- C2PA Tool (c2patool): c2patool-v0.28.6
Workaround
Unknown.
Exploitation
- Adobe is not aware of any exploits in the wild for the issues in APSB26-184.
- No public proof of concept found; not confirmed absent.
- Not listed as known exploited (KEV: No) in the sources checked.
Our recommendation
- Inventory all installations of c2patool and the Content Credentials Rust SDK, including internal tools, CI/CD pipelines and vendor software.
- Update to c2pa-v0.91.11 or c2patool-v0.28.6 or later, following the Adobe advisory APSB26-184.
- Ask software vendors whether their products bundle an affected version.
- Train users to be cautious with links from untrusted sources and monitor APSB26-184 and NVD for changes.
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-2026-118484 www.cve.org
- ThreatInt CVE-2026-118484 cve.threatint.com
- Strix AI CVE-2026-118484 www.strix.ai
- OffSeq Radar CVE-2026-118484 radar.offseq.com
- Zero Day Initiative November 2026 Security Update Review www.zerodayinitiative.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, 11:55.
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. Exploitation of this issue requires user interaction in that a victim must visit a maliciously crafted URL or interact with a compromised web page.
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.
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