# CVE-2026-48377: Adobe Content Credentials SDK improper input validation and certificate bypass

Source: https://junglewise.ai/threats/cve-2026-48377-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-2026-48377 · Severity: medium · CVSS 5.3 · Published 2026-10-13

Adobe Content Credentials SDK, a toolkit for verifying and managing digital content authentication, contains multiple validation flaws that allow attackers to bypass security protections without user interaction. An attacker can forge credentials, trigger denial-of-service conditions, or gain unauthorized write access to protected content, undermining the integrity guarantees that these tools are designed to provide.

Technologies: [Adobe C2pa](https://junglewise.ai/threats/technologies/c2pa), [Adobe C2PA Tool](https://junglewise.ai/threats/technologies/c2pa-tool), [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](https://junglewise.ai/threats/technologies/content-credentials-rust-sdk). Vendors: [Adobe](https://junglewise.ai/threats/vendors/adobe).

## Quick answers

**Is CVE-2026-48377 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-48377 being exploited in the wild.

**How severe is CVE-2026-48377?** Medium severity, with a CVSS score of 5.3, published 13 October 2026.

**Which products and versions are affected?** Adobe C2PA Tool 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-v0.90.15 and earlier.

**Is there a fix for CVE-2026-48377?** 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-2026-48377 attacked?** It is attacked over the network, in a software library.

**Am I affected by CVE-2026-48377?** Check whether you run Adobe C2pa, Adobe C2PA Tool, 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

Multiple critical flaws span improper input validation (CWE-20), certificate validation bypasses (CWE-295), cryptographic signature verification failures (CWE-347), server-side request forgery (CWE-918), and resource exhaustion (CWE-400). These vulnerabilities are network-accessible with no privilege or user interaction required, allowing remote attackers to forge credentials, bypass authentication mechanisms, manipulate content metadata, or exhaust application resources. All three SDK distributions are affected: the Rust library c2pa, the command-line tool c2patool, and the JavaScript web library.

## Affected products

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

## Timeline

- 2026-10-13: disclosed: APSB26-163 published; priority 3 severity rating

## 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 path traversal in file write](https://junglewise.ai/threats/cve-2026-123267-cai-content-credentials-is-affected-by-an-improper-limitation-of)
- [Adobe Content Credentials SDK improper verification of cryptographic signature](https://junglewise.ai/threats/cve-2026-123262-cai-content-credentials-is-affected-by-an-improper-verification)
- [Adobe Content Credentials SDK improper input validation in security feature](https://junglewise.ai/threats/cve-2026-123260-cai-content-credentials-is-affected-by-an-improper-input)
- [Adobe Content Credentials SDK improper cryptographic signature verification](https://junglewise.ai/threats/cve-2026-122100-cai-content-credentials-is-affected-by-an-improper-verification)
- [Adobe Content Credentials SDK uncontrolled resource consumption denial-of-service](https://junglewise.ai/threats/cve-2026-122097-cai-content-credentials-is-affected-by-an-uncontrolled-resource)