# CVE-2026-34688: Adobe CAI Content Credentials denial of service via improper input validation

Source: https://junglewise.ai/threats/cve-2026-34688-adobe-cai-content-credentials-denial-of-service-via-improper  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-05-12. Updated: 2026-06-09  
License: CC BY 4.0 with a link back

CVE-2026-34688 · 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 to crash. By providing specially crafted input, an attacker can trigger a denial-of-service condition, making the verification service unavailable. This impact is limited to service availability and does not involve the theft of sensitive customer data.

Technologies: [Adobe C2pa](https://junglewise.ai/threats/technologies/c2pa), [Adobe c2pa-v (Rust SDK)](https://junglewise.ai/threats/technologies/c2pa-rs), [Adobe C2pa-Web](https://junglewise.ai/threats/technologies/c2pa-web), [Adobe Content Credentials SDK](https://junglewise.ai/threats/technologies/content-credentials-sdk). Vendors: [Adobe](https://junglewise.ai/threats/vendors/adobe).

## Quick answers

**Is CVE-2026-34688 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-34688 being exploited in the wild.

**How severe is CVE-2026-34688?** Medium severity, with a CVSS score of 6.2, published 12 May 2026.

**Which products and versions are affected?** Adobe c2pa-v (Rust SDK) 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-2026-34688?** 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-2026-34688 attacked?** It is attacked with local access, in a software library.

**Am I affected by CVE-2026-34688?** Check whether you run Adobe C2pa, Adobe c2pa-v (Rust SDK), 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) SDKs, specifically the c2pa-web (Node.js) and c2pa-v (Rust) implementations. The flaw allows a local attacker to provide malformed data that the library fails to process safely, leading to an application crash. The attack vector is classified as local, but it does not require specific user interaction or elevated privileges to trigger the denial-of-service condition. Patches are available in c2pa-web version 0.7.1 and c2pa-v (Rust) version 0.80.1.

## Affected products

- Adobe c2pa-web 0.7.0 and earlier
- Adobe c2pa-v (Rust 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](https://helpx.adobe.com/security/products/content-authenticity-sdk/apsb26-53.html)

## Related threats

- [Adobe Content Credentials SDK server-side request forgery](https://junglewise.ai/threats/cve-2026-95634-cai-content-credentials-is-affected-by-a-server-side-request)
- [Adobe Content Credentials Rust SDK improper cryptographic signature verification](https://junglewise.ai/threats/cve-2026-95633-cai-content-credentials-is-affected-by-an-improper-verification)
- [Adobe Content Credentials improper cryptographic signature verification](https://junglewise.ai/threats/cve-2026-95632-cai-content-credentials-is-affected-by-an-improper-verification)
- [Adobe Content Credentials SDK multiple security feature bypasses](https://junglewise.ai/threats/cve-2026-48378-cai-content-credentials-is-affected-by-an-improper-input)
- [Adobe Content Credentials SDK improper input validation and certificate bypass](https://junglewise.ai/threats/cve-2026-48377-cai-content-credentials-is-affected-by-an-improper-input)