CVE-2026-71389 CAI Content Credentials | Integer Underflow (Wrap or Wraparound) (CWE-191)
An integer underflow in Adobe Content Credentials SDKs allows attackers to crash the application, causing a denial of service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-71389?
CVE-2026-71389 is a medium-severity vulnerability in Adobe C2pa, published on 11 Aug 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
CAI Content Credentials is 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.
Weakness: CWE-191
Which versions are affected by CVE-2026-71389?
It affects 3 products.
Products include Adobe C2pa, Adobe C2pa-Web, Adobe C2patool.
How do I fix CVE-2026-71389?
No fix has been published for CVE-2026-71389 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-71389 being exploited?
There is no known exploitation of CVE-2026-71389 in the wild and no public exploit code.
Other vulnerabilities in Adobe C2pa
- CVE-2026-95634 CAI Content Credentials | Server-Side Request Forgery (SSRF) (CWE-918)
- CVE-2026-48290 CAI Content Credentials | Server-Side Request Forgery (SSRF) (CWE-918)
- CVE-2026-100113 CAI Content Credentials | Improper Input Validation (CWE-20)
- CVE-2026-100114 CAI Content Credentials | Improper Access Control (CWE-284)
- CVE-2026-100115 CAI Content Credentials | Improper Access Control (CWE-284)
Sources
Also known as GHSA-cfc6-g38h-jx4r.