CVE-2026-34667

Description

CAI Content Credentials versions 0.78.2, 0.7.0 and earlier are affected by an Integer Underflow (Wrap or Wraparound) 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.

CVSS v3.1 Score

6.2

MEDIUM

CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS — Exploit Prediction

0.0001

Probability of exploitation

0.01%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-191 CWE-191

Affected Products

Vendor	Product	Versions
adobe	c2pa	< 0.80.1
adobe	c2pa-web	< 0.7.1

References

Advisories & Patches

https://helpx.adobe.com/security/products/content-authenticity-sdk/apsb26-53.html

Frequently Asked Questions

What is CVE-2026-34667? +

CAI Content Credentials versions 0.78.2, 0.7.0 and earlier are affected by an Integer Underflow (Wrap or Wraparound) 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. It has a CVSS v3.1 base score of 6.2 (MEDIUM).

How severe is CVE-2026-34667? +

CVE-2026-34667 has a CVSS v3.1 score of 6.2 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance. The EPSS score is 0.0001, placing it in the 0th percentile for exploitation probability.

What products are affected by CVE-2026-34667? +

CVE-2026-34667 affects products from adobe, specifically: c2pa, c2pa-web. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2026-34667? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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