Is CVE-2026-34670 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-34670 being exploited in the wild.

How severe is CVE-2026-34670?

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-2026-34670?

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-2026-34670 attacked?

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

Am I affected by CVE-2026-34670?

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-2026-34670: Adobe CAI Content Credentials denial of service via improper input validation

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-2026-34670?

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-2026-34670 attacked?

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

Q: Am I affected by CVE-2026-34670?

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-2026-34670 · Severity: medium · CVSS 6.2 · Published 2026-05-12

Adobe CAI Content Credentials, a toolset used to verify the authenticity and origin of digital content, is affected by a security flaw that can cause applications using it to crash. An attacker could exploit this to disrupt services or prevent users from verifying digital media. This issue affects the underlying software libraries used by developers to integrate content authenticity features into web and desktop applications.

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

Quick answers

Is CVE-2026-34670 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-34670 being exploited in the wild.
How severe is CVE-2026-34670?: 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-2026-34670?: 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-2026-34670 attacked?: It is attacked with local access, in a software library.
Am I affected by CVE-2026-34670?: 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 improper input validation vulnerability (CWE-20) exists in the Adobe Content Authenticity Initiative (CAI) SDK, specifically affecting the c2pa-web (Node.js) and c2pa (Rust) libraries. The flaw allows an attacker to provide specially crafted input that triggers an application crash, resulting in a denial-of-service (DoS) condition. The attack vector is classified as local, meaning the malicious input must be processed by the local environment, but it requires no special privileges or user interaction to trigger the crash. Patches are available 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
2026-06-09: other: Advisory updated with enriched product version data.

References

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

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