Improper input validation in Adobe C2pa
CVE-2026-34670
CAI Content Credentials versions c2pa-web@0.7.0, 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.
Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.2 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.003 (16.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 17th percentile — 16.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: +0.000
Affected products
Weakness classification (CWE)
References
- helpx.adobe.com/security/products/content-authenticity-sdk/apsb26-53.html (vendor-advisory, Vendor Advisory)
Frequently asked questions
- What is CVE-2026-34670?
- CVE-2026-34670 is a medium-severity vulnerability in Adobe C2pa, classified under Improper Input Validation. CVSS score: 6.2/10. Published 2026-05-12.
- How severe is CVE-2026-34670?
- Medium severity. CVSS v3 base score is 6.2 out of 10.