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C2paApplication · Adobe

CVE-2026-34671

MEDIUM · 6.2 CVSS v3.1 Published 2026-05-12
Fix available
A fix is available. Upgrade to 0.7.1 / 0.80.1 or later.
See remediation →
67/100
Remediation priority · Elevated
No privileges Zero-click

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
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.

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis · moderate confidence

Integer overflow vulnerability in CAI Content Credentials libraries (c2pa-web and c2pa-v) allows an attacker to trigger application crash and denial-of-service without any user interaction, likely via maliciously crafted content credentials data that causes arithmetic wraparound.

MitigationUpdate c2pa-web to version newer than 0.7.0 and c2pa-v to version newer than 0.78.2 to obtain patched versions that properly handle integer operations.

Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.

Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.

NVD · CPE data
C2paApplication
Affected:< 0.80.1
C2pa WebApplication
Affected:< 0.7.1

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Local
Complexity
Low
Privileges
None
User interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

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

Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.

dbcve checks

Work through these to decide whether this CVE applies to you.

  1. Identify installed Adobe C2pa library version
    Check your project dependencies, package.json, or installed npm packages for the c2pa-v or c2pa package and note its version number
    Affected if The installed version is lower than 0.80.1 for c2pa-v or the package name/version is not listed at all (not installed)
  2. Identify installed Adobe C2pa Web library version
    Check your project dependencies, package.json, or installed npm packages for the c2pa-web package and note its version number
    Affected if The installed version is lower than 0.7.1 for c2pa-web or the package is not present (not installed)
  3. Verify content credentials processing is in use
    Search your codebase for imports or usage of c2pa-web or c2pa-v libraries, particularly any code that calls functions to parse, validate, or process content credentials data from external sources
    Affected if Your application imports and uses c2pa-web or c2pa-v to process content credentials data (the vulnerability triggers when processing crafted data)
  4. Confirm application type and exposure
    Determine if your application accepts content credentials data from untrusted sources (user uploads, API inputs, external URLs) that get passed to the c2pa library
    Affected if Your application processes content credentials data from untrusted or external sources using the affected library versions

You are affected if you have c2pa-v version below 0.80.1 or c2pa-web version below 0.7.1 in your environment and your application uses these libraries to process content credentials data.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

dbcve · scoped
Upgrade available Upgrade to 0.7.1 / 0.80.1 or later
Fixed in 0.7.10.80.1
Interim mitigation

Update c2pa-web to version newer than 0.7.0 and c2pa-v to version newer than 0.78.2 to obtain patched versions that properly handle integer operations.

Recommended fix High confidence

C2pa >= 0.80.1 and C2pa Web >= 0.7.1

  1. Upgrade the c2pa package to version 0.80.1 or later
  2. If using c2pa-web, upgrade the c2pa-web package to version 0.7.1 or later
  3. After upgrading, verify the application runs without crashes
  4. Ensure the updated libraries are redeployed to all affected environments

Generated from the published advisory — verify against the referenced sources before acting.

Fix this in C2pa Scoped from the published advisory
  • Consultation2.0 h
  • Implementation4.0 h
  • Testing6.0 h
  • Review / QA3.0 h
15.0 hours of engineering $2,560
Get the upgrade done

An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $4,096.

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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2026-34671 in production — separate from our analysis above.

No notes yet

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What this is

A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.

What belongs here
  • Verified mitigations, workarounds, and config changes
  • Version or environment caveats, and links to real fixes
  • No weaponised exploit code, or anything meant to cause harm
  • No spam, self-promotion, credentials, or personal data