Integer overflow in Adobe C2pa

CVE-2026-34711

CAI Content Credentials versions c2pa-web@0.7.1, c2pa-v0.80.1 and earlier are affected by an Integer Overflow or Wraparound vulnerability. 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: Integer Overflow

Published · last modified .

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.010 (61.4th percentile), scored .

Low probability of exploitation in the next 30 days, but still tracked. 61st percentile — 61.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2026-34711: rose from 0.004 to 0.010.

EPSS over last 30 days · oldest: 0.004 · newest: 0.010 · change: +0.006

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-34711?
CVE-2026-34711 is a high-severity vulnerability in Adobe C2pa, classified under Integer Overflow or Wraparound. CVSS score: 7.5/10. Published 2026-06-09.
How severe is CVE-2026-34711?
High severity. CVSS v3 base score is 7.5 out of 10.