CVE-2026-100139 Adobe CVE debrief

Who should care

Defenders and administrators responsible for Content Credentials Rust SDK, C2PA Tool, and Content Credentials JS SDK should assess exposure and prioritize updates. This vulnerability's potential for denial-of-service attacks makes swift verification and remediation crucial.

Why it matters

CVE-2026-100139 is an Uncontrolled Resource Consumption vulnerability in Adobe's CAI Content Credentials that could lead to application denial-of-service. Defenders should prioritize verifying and updating affected systems to prevent potential resource exhaustion and denial-of-service attacks.

• Potential application denial-of-service due to resource exhaustion
• Need for verification and updates of affected systems
• Possible impact on system availability and performance
• Requirement for monitoring system resources for unusual patterns

Technical summary

The vulnerability, CVE-2026-100139, affects Adobe's CAI Content Credentials and could lead to an application denial-of-service condition through uncontrolled resource consumption. An attacker could exploit this issue without requiring user interaction, potentially exhausting system resources. The vulnerability is caused by inadequate resource management in the affected products, specifically in Content Credentials Rust SDK, C2PA Tool, and Content Credentials JS SDK. To mitigate this vulnerability, defenders should prioritize verifying and updating affected systems, particularly focusing on these components. Given the potential for denial-of-service, swift action is necessary to ensure system availability and to

Defensive priority

Defenders should prioritize verifying and updating affected systems, particularly focusing on Content Credentials Rust SDK, C2PA Tool, and Content Credentials JS SDK. Given the potential for denial-of-service, swift action is necessary to ensure system availability.

Recommended defensive actions

• Verify and update Content Credentials Rust SDK to version c2pa-v0.91.1 or later
• Verify and update C2PA Tool to version v0.28.1 or later
• Verify and update Content Credentials JS SDK to version @contentauth/[email protected] or later
• Monitor system resources for unusual consumption patterns
• Implement compensating controls to mitigate potential denial-of-service attacks

Evidence notes

The CVE record and source item provide details on the vulnerability, its potential impact, and affected products. However, specific details about exploitation attempts or victim organizations are not provided. The vendor, Adobe, has provided an advisory (APSB26-163) addressing this issue.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.