# CVE-2026-100135: Adobe Content Credentials SDK improper input validation security bypass

Source: https://junglewise.ai/threats/cve-2026-100135-cai-content-credentials-is-affected-by-an-improper-input  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-10-13. Updated: 2026-10-16  
License: CC BY 4.0 with a link back

CVE-2026-100135 · Severity: high · CVSS 7.5 · Published 2026-10-13

Adobe Content Credentials SDK is a library used to verify the authenticity and integrity of digital content through cryptographic credentials. Multiple improper input validation and certificate verification flaws allow attackers to bypass these security protections and modify content or forge authenticity claims without authorization. No user interaction is required for exploitation.

Technologies: [Adobe C2pa](https://junglewise.ai/threats/technologies/c2pa), [Adobe C2PA Tool (c2patool)](https://junglewise.ai/threats/technologies/c2pa-tool-c2patool), [Adobe C2pa-Web](https://junglewise.ai/threats/technologies/c2pa-web), [Adobe C2patool](https://junglewise.ai/threats/technologies/c2patool), [Adobe Content Credentials JS SDK](https://junglewise.ai/threats/technologies/content-credentials-js-sdk), [Adobe Content Credentials Rust SDK (c2pa)](https://junglewise.ai/threats/technologies/content-credentials-rust-sdk-c2pa). Vendors: [Adobe](https://junglewise.ai/threats/vendors/adobe).

## Quick answers

**Is CVE-2026-100135 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-100135 being exploited in the wild.

**How severe is CVE-2026-100135?** High severity, with a CVSS score of 7.5, published 13 October 2026.

**Which products and versions are affected?** Adobe C2PA Tool (c2patool) c2patool-v0.27.15 and earlier; Adobe Content Credentials JS SDK @contentauth/c2pa-web@0.13.4 and earlier; Adobe Content Credentials Rust SDK (c2pa) c2pa-v0.90.15 and earlier.

**Is there a fix for CVE-2026-100135?** Yes: fixed in Content Credentials Rust SDK c2pa-v0.91.1, C2PA Tool c2patool-v0.28.1, Content Credentials JS SDK @contentauth/c2pa-web@0.15.3. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-100135 attacked?** It is attacked over the network.

**Am I affected by CVE-2026-100135?** Check whether you run Adobe C2pa, Adobe C2PA Tool (c2patool), 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.

## How to fix

- Fixed in Content Credentials Rust SDK c2pa-v0.91.1, C2PA Tool c2patool-v0.28.1, Content Credentials JS SDK @contentauth/c2pa-web@0.15.3

## Technical details

The vulnerability involves improper input validation, certificate validation, and cryptographic signature verification in the Content Credentials SDK (Rust, JS, and CLI tool variants), allowing attackers to bypass content authentication mechanisms. Attack vectors are network-based with no authentication or user interaction required (CVSS:3.1/AV:N/AC:L/PR:N/UI:N). Successful exploitation grants unauthorized write access and the ability to forge or tamper with content credentials.

## Affected products

- Adobe Content Credentials Rust SDK (c2pa) c2pa-v0.90.15 and earlier
- Adobe C2PA Tool (c2patool) c2patool-v0.27.15 and earlier
- Adobe Content Credentials JS SDK @contentauth/c2pa-web@0.13.4 and earlier

## Timeline

- 2026-10-13: disclosed

## References

- [https://www.adobe.com/trust/security/products/content-credentials-sdk/apsb26-163.html](https://www.adobe.com/trust/security/products/content-credentials-sdk/apsb26-163.html)

## Related threats

- [Adobe Content Credentials SDK improper cryptographic signature verification](https://junglewise.ai/threats/cve-2026-123261-cai-content-credentials-is-affected-by-an-improper-verification)
- [Adobe Content Credentials SDK improper certificate validation](https://junglewise.ai/threats/cve-2026-122098-cai-content-credentials-is-affected-by-an-improper-certificate)
- [Adobe Content Credentials SDK improper input validation security feature bypass](https://junglewise.ai/threats/cve-2026-118484-cai-content-credentials-is-affected-by-an-improper-input)
- [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)