Is CVE-2026-34677 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-34677 being exploited in the wild.

How severe is CVE-2026-34677?

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; Adobe C2pa-Web <= 0.7.0; Adobe Content Credentials SDK 0.78.2, 0.7.0 and earlier.

Is there a fix for CVE-2026-34677?

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-2026-34677 attacked?

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

Am I affected by CVE-2026-34677?

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.

CVE-2026-34677: Adobe CAI Content Credentials uncontrolled resource consumption

Q: Which products and versions are affected?

Adobe C2pa-Rust <= 0.78.2; Adobe C2pa-Web <= 0.7.0; Adobe Content Credentials SDK 0.78.2, 0.7.0 and earlier.

Q: Is there a fix for CVE-2026-34677?

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.

Q: How is CVE-2026-34677 attacked?

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

Q: Am I affected by CVE-2026-34677?

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.

CVE-2026-34677 · Severity: medium · CVSS 6.2 · Published 2026-05-12

Adobe CAI Content Credentials, a toolset used to verify the authenticity of digital content, is affected by a resource management flaw. An attacker can exploit this to exhaust system memory or processing power, causing the application to crash or become unresponsive. This results in a denial-of-service, preventing users from verifying content provenance or using the affected software.

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

Quick answers

Is CVE-2026-34677 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-34677 being exploited in the wild.
How severe is CVE-2026-34677?: 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; Adobe C2pa-Web <= 0.7.0; Adobe Content Credentials SDK 0.78.2, 0.7.0 and earlier.
Is there a fix for CVE-2026-34677?: 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-2026-34677 attacked?: It is attacked with local access, in a software library.
Am I affected by CVE-2026-34677?: 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 uncontrolled resource consumption vulnerability (CWE-400) exists in the Adobe Content Authenticity Initiative (CAI) SDK. The flaw affects both the Node.js (c2pa-web) and Rust (c2pa-v) implementations. An attacker can exploit this vulnerability locally without requiring user interaction to exhaust system resources. This leads to a denial-of-service (DoS) condition for the host application. The issue is addressed in c2pa-web version 0.7.1 and c2pa-rust version 0.80.1.

Affected products

Adobe c2pa-web <= 0.7.0
Adobe c2pa-rust (c2pa-v) <= 0.78.2

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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