Quick answers
- Is CVE-2026-34671 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-34671 being exploited in the wild.
- How severe is CVE-2026-34671?
- Medium severity, with a CVSS score of 6.2, published 12 May 2026.
- Which products and versions are affected?
- Adobe C2pa-Rust 0.78.2 and earlier; Adobe C2pa-Web 0.7.0 and earlier; Adobe Content Credentials SDK 0.78.2, 0.7.0 and earlier.
- Is there a fix for CVE-2026-34671?
- No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-2026-34671 attacked?
- It is attacked with local access, in a software library.
- Am I affected by CVE-2026-34671?
- Check whether you run Adobe C2pa, Adobe C2pa-Rust, Adobe C2pa-Web or one of the others listed at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
An integer overflow or wraparound vulnerability (CWE-190) exists in the Adobe Content Authenticity Initiative (CAI) SDK, specifically affecting the c2pa-web and c2pa-v (Rust) implementations. The flaw is triggered during the processing of content credentials, where improper arithmetic handling can lead to an application crash. The attack vector is classified as local, meaning the attacker typically needs to provide a specially crafted file or input to be processed by the library on the local system. Successful exploitation results in a denial-of-service (DoS) state. Patches have been released in c2pa-web version 0.7.1 and c2pa-rust version 0.80.1.
Affected products
- Adobe c2pa-web 0.7.0 and earlier
- Adobe c2pa-rust (c2pa-v) 0.78.2 and earlier
Timeline
- 2026-05-12: disclosed
- 2026-05-12: advisory