CVE-2026-34665: CAI Content Credentials versions c2pa-web@0.7.0, c2pa-v0.78.2 and earlier are affected by an Uncontrolled Reso

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HIGH 7.5REMOTEUPGRADEUPGRADE

CVE-2026-34665 is a high-severity flaw (CVSS 7.5) affecting c2pa, c2pa-web. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

CAI Content Credentials versions c2pa-web@0.7.0, c2pa-v0.78.2 and earlier are affected by an Uncontrolled Resource Consumption vulnerability that could lead to application denial-of-service. An attacker could exploit this vulnerability to exhaust system resources, resulting in an application denial-of-service condition. Exploitation of this issue does not require user interaction.

Why this priority

High severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.8% (top 44%)
CISA exploited list	No
Weakness	CWE-400
Published	2026-05-12
Last modified	2026-10-26

Publisher (CNA): Adobe Systems Incorporated · Vendor: adobe

Last updated 2026-10-26 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-05-12 20:16 UTCPublished CVE record published
2026-10-26 18:10 UTCUpdated Record last modified

adobe c2pa UPGRADE

Affected: < 0.80.1

Fixed in: 0.80.1

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy c2pa || rpm -q c2pa || c2pa --version

2. UPGRADE to 0.80.1 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade c2pa

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade c2pa

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

adobe c2pa-web UPGRADE

Affected: < 0.7.1

Fixed in: 0.7.1

Safe to downgrade to: no unaffected older release

1. Check installed version

npm ls c2pa-web

2. UPGRADE to 0.7.1

npm install c2pa-web@">=0.7.1"

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-34665?

c2pa: upgrade to 0.80.1; c2pa-web: upgrade to 0.7.1. Exact commands for each OS are on this page.

Is CVE-2026-34665 being exploited?

CVE-2026-34665 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-34665 affect?

CVE-2026-34665 affects c2pa, c2pa-web. Severity is high (CVSS 7.5). CAI Content Credentials versions c2pa-web@0.7.0, c2pa-v0.78.2 and earlier are affected by an Uncontrolled Resource Consumption vulnerability that could lead to application denial-of-service. An attacker could exploit this vulnerability to e

How urgent is CVE-2026-34665?

Priority 45/100. High severity; Remotely exploitable, no login, no user action

Related CVEs

CVE-2026-34666 MEDIUM 6.2 UPGRADE UPGRADE CAI Content Credentials versions c2pa-web@0.7.0, c2pa-v0.78.2 and earlier are affected by an Improper Input Va
CVE-2026-34667 MEDIUM 6.2 UPGRADE UPGRADE CAI Content Credentials versions c2pa-web@0.7.0, c2pa-v0.78.2 and earlier are affected by an Integer Underflow
CVE-2026-34670 MEDIUM 6.2 UPGRADE UPGRADE CAI Content Credentials versions c2pa-web@0.7.0, c2pa-v0.78.2 and earlier are affected by an Improper Input Va
CVE-2026-34672 MEDIUM 6.2 UPGRADE UPGRADE CAI Content Credentials versions c2pa-web@0.7.0, c2pa-v0.78.2 and earlier are affected by an Integer Underflow
CVE-2026-34678 MEDIUM 6.2 UPGRADE UPGRADE CAI Content Credentials versions c2pa-web@0.7.0, c2pa-v0.78.2 and earlier are affected by an Uncontrolled Reso

References

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