CAI Content Credentials | Improper Input Validation (CWE-20) (CVE-2026-34666) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-34666

CAI Content Credentials | Improper Input Validation (CWE-20)

Answer in brief

CVE-2026-34666 records a Unknown severity vulnerability in CAI Content Credentials | Improper Input Validation (CWE-20). The current sources do not mark it as known exploited. The current feed maps Adobe/Content Credentials JS SDK (generic), Adobe/Content Credentials Rust SDK (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published May 12, 2026Updated Aug 27, 2026Source checked Aug 27, 2026First seen by HOL Aug 27, 2026Material review Aug 27, 2026

Upstream Advisory

Key facts

Risk: Unknown severitySource severity not reported
Exploitation: Not marked as known exploited
Affected software: 2 mapped packages or products
Fix availability: Not reported

Why this deserves its current priority

A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Adobe/Content Credentials JS SDK (generic), Adobe/Content Credentials Rust SDK (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Adobe/Content Credentials JS SDKgeneric	0	Not reported
Adobe/Content Credentials Rust SDKgeneric	0	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for Adobe/Content Credentials JS SDK, Adobe/Content Credentials Rust SDK.
Review the reported fix. Monitor this advisory for an available fix and review any installs of the affected package.

Evidence timeline and material changes

Published upstream
May 12, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Aug 27, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Aug 27, 2026

Sources and claim methodology

Source referencehelpx.adobe.com

Upstream source description

CAI Content Credentials versions [email protected], c2pa-v0.78.2 and earlier are affected by an Improper Input Validation vulnerability that could result in an application denial-of-service. An attacker could exploit this vulnerability to crash the application, leading to a denial-of-service condition. Exploitation of this issue does not require user interaction.

Quoted source text, attributed separately from HOL analysis.