Is CVE-2026-34672 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-34672 being exploited in the wild.

How severe is CVE-2026-34672?

Medium severity, with a CVSS score of 6.2, published 12 May 2026.

Which products and versions are affected?

Adobe C2pa-Rs 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-2026-34672?

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-2026-34672 attacked?

It is attacked with local access, in a software library.

Am I affected by CVE-2026-34672?

Check whether you run Adobe C2pa, Adobe C2pa-Rs, 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.

CVE-2026-34672: Adobe CAI Content Credentials integer underflow leading to DoS

CVE-2026-34672 · Severity: medium · CVSS 6.2 · Published 2026-05-12

Adobe CAI Content Credentials, a toolset used to verify the authenticity and origin of digital media, is affected by a software flaw that can cause applications to crash. An attacker could exploit this vulnerability to trigger a denial-of-service, preventing users from verifying content or using the affected software. This impact is limited to service availability and does not involve the theft of personal data.

Technologies: Adobe C2pa, Adobe C2pa-Rs, Adobe C2pa-Web, Adobe Content Credentials SDK. Vendors: Adobe.

Quick answers

Is CVE-2026-34672 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-34672 being exploited in the wild.
How severe is CVE-2026-34672?: Medium severity, with a CVSS score of 6.2, published 12 May 2026.
Which products and versions are affected?: Adobe C2pa-Rs 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-2026-34672?: 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-2026-34672 attacked?: It is attacked with local access, in a software library.
Am I affected by CVE-2026-34672?: Check whether you run Adobe C2pa, Adobe C2pa-Rs, 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 underflow (CWE-191) exists in the Adobe Content Authenticity Initiative (CAI) Content Credentials SDK (c2pa-rs and c2pa-web). The vulnerability occurs when the software performs a subtraction operation that results in a value smaller than the minimum possible integer, leading to a wrap-around. This flaw can be triggered by a local attacker to cause an application crash, resulting in a denial-of-service (DoS) condition. The exploit does not require user interaction or elevated privileges. Patches are available in c2pa-web version 0.7.1 and c2pa-rs version 0.80.1.

Affected products

Adobe c2pa-web 0.7.0 and earlier
Adobe c2pa-rs (Content Credentials SDK) 0.78.2 and earlier

Timeline

2026-05-12: disclosed
2026-05-12: advisory

References

https://helpx.adobe.com/security/products/content-authenticity-sdk/apsb26-53.html

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