How severe is CVE-2026-34680?

CVE-2026-34680 has a CVSS 3.x base score of 6.2, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2026-34680 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (17th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-34680?

CVE-2026-34680 primarily affects Adobe C2pa. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2026-34680?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-34680 have an EU (EUVD) identifier?

Yes. CVE-2026-34680 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-29779.

When was CVE-2026-34680 published?

CVE-2026-34680 was published on 2026-05-12 and last updated on 2026-06-17.

CVE-2026-34680

Q: What is CVE-2026-34680?

CAI Content Credentials versions c2pa-web@0.7.0, c2pa-v0.78.2 and earlier are affected by an Integer Overflow 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.

CVE-2026-34680 is a medium-severity vulnerability in Adobe C2pa with a CVSS 3.x base score of 6.2. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-190.

Key facts

Severity: Medium (CVSS 3.x base score 6.2)
EPSS exploit prediction: 0% (17th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-29779
Weakness: CWE-190
Affected product: Adobe C2pa
Published: 2026-05-12
Last modified: 2026-06-17

Description

CAI Content Credentials versions [email protected], c2pa-v0.78.2 and earlier are affected by an Integer Overflow 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.

Frequently asked questions

What is CVE-2026-34680?: CAI Content Credentials versions [email protected], c2pa-v0.78.2 and earlier are affected by an Integer Overflow 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.
How severe is CVE-2026-34680?: CVE-2026-34680 has a CVSS 3.x base score of 6.2, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2026-34680 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (17th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-34680?: CVE-2026-34680 primarily affects Adobe C2pa. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2026-34680?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-34680 have an EU (EUVD) identifier?: Yes. CVE-2026-34680 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-29779.
When was CVE-2026-34680 published?: CVE-2026-34680 was published on 2026-05-12 and last updated on 2026-06-17.

References

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

Affected products (2)

cpe:2.3:a:adobe:c2pa:*:*:*:*:*:rust:*:*
cpe:2.3:a:adobe:c2pa-web:*:*:*:*:*:node.js:*:*

More vulnerabilities in Adobe C2pa

CVE-2026-34713 — High (CVSS 7.5): CAI Content Credentials versions [email protected], c2pa-v0.80.1 and earlier are affected by an Uncontrolled Resource…
CVE-2026-34712 — High (CVSS 7.5): CAI Content Credentials versions [email protected], c2pa-v0.80.1 and earlier are affected by an Improper Input Validation…
CVE-2026-34711 — High (CVSS 7.5): CAI Content Credentials versions [email protected], c2pa-v0.80.1 and earlier are affected by an Integer Overflow or…
CVE-2026-34665 — High (CVSS 7.5): CAI Content Credentials versions [email protected], c2pa-v0.78.2 and earlier are affected by an Uncontrolled Resource…
CVE-2026-47905 — Medium (CVSS 6.2): CAI Content Credentials versions [email protected], c2pa-v0.80.1 and earlier are affected by an Uncontrolled Resource…
CVE-2026-47904 — Medium (CVSS 6.2): CAI Content Credentials versions [email protected], c2pa-v0.80.1 and earlier are affected by an Uncontrolled Resource…

All CVEs affecting Adobe C2pa →

Other CWE-190 (Integer Overflow or Wraparound) vulnerabilities

CVE-2026-4689 — Critical (CVSS 10.0): Sandbox escape due to incorrect boundary conditions, integer overflow in the XPCOM component. This vulnerability was…
CVE-2026-24814 — Critical (CVSS 10.0): Integer Overflow or Wraparound vulnerability in swoole swoole-src (thirdparty/hiredis modules). This vulnerability is…
CVE-2025-64721 — Critical (CVSS 10.0): Sandboxie is a sandbox-based isolation software for 32-bit and 64-bit Windows NT-based operating systems. In versions…
CVE-2015-5108 — Critical (CVSS 10.0): Integer overflow in Adobe Reader and Acrobat 10.x before 10.1.15 and 11.x before 11.0.12, Acrobat and Acrobat Reader DC…
CVE-2015-5097 — Critical (CVSS 10.0): Integer overflow in Adobe Reader and Acrobat 10.x before 10.1.15 and 11.x before 11.0.12, Acrobat and Acrobat Reader DC…
CVE-2013-2555 — Critical (CVSS 10.0): Integer overflow in Adobe Flash Player before 10.3.183.75 and 11.x before 11.7.700.169 on Windows and Mac OS X, before…

Browse all CWE-190 (Integer Overflow or Wraparound) vulnerabilities →