Is CVE-2026-34673 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-34673 being exploited in the wild.

How severe is CVE-2026-34673?

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-2026-34673?

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-2026-34673 attacked?

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

Am I affected by CVE-2026-34673?

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-2026-34673: Adobe CAI Content Credentials denial of service via resource exhaustion

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-2026-34673?

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-2026-34673 attacked?

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

Q: Am I affected by CVE-2026-34673?

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-2026-34673 · Severity: medium · CVSS 6.2 · Published 2026-05-12

Adobe Content Credentials (C2PA) libraries are used to verify the authenticity and origin of digital media. A security flaw in these libraries allows an attacker to trigger excessive resource consumption, which can crash the application or make it unresponsive. This could disrupt services that rely on verifying image or video credentials, though it does not directly expose private user data.

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

Quick answers

Is CVE-2026-34673 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-34673 being exploited in the wild.
How severe is CVE-2026-34673?: 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-2026-34673?: 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-2026-34673 attacked?: It is attacked with local access, in a software library.
Am I affected by CVE-2026-34673?: 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

The vulnerability is classified as CWE-400 (Uncontrolled Resource Consumption) within the Adobe Content Authenticity Initiative (CAI) SDK. It affects both the Node.js (c2pa-web) and Rust (c2pa-v) implementations. An attacker can exploit this flaw to exhaust system resources such as CPU or memory, resulting in an application-level denial-of-service (DoS). The attack vector is local and does not require user interaction or specific privileges. 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
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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