CyberSecBulletin
CVE-2026-100115NVD status: Analyzed

Content Credentials Rust SDK: Improper Access Control

Published Updated By the CyberSecBulletin desk

CVE-2026-100115 is a high-severity improper access control vulnerability in Content Credentials Rust SDK from Adobe, with a CVSS 3.1 base score of 7.5 out of 10. It can be exploited remotely over the network by an unauthenticated attacker, without any action from a user. Affected Content Credentials Rust SDK versions: c2pa-v0.90.15 and earlier. The record does not name a fixed version, so check the vendor advisory. There is no confirmed exploitation so far. EPSS estimates a 0.46% chance of exploitation within 30 days, which is low compared with other CVEs.

Next patch cycle

High severity with no evidence of exploitation so far.

What to do

  1. Update C2pa to 0.91.1 or a later version.
  2. Update C2pa-web to 0.15.3 or a later version.
  3. Update C2patool to 0.28.1 or a later version.
  4. Read the advisory on adobe.com for workarounds and exact fixed builds.
  5. Until you can update, restrict network access to the affected service so it is not reachable from untrusted networks.

Affected products and versions

VendorProductAffected versionsFixed in
AdobeContent Credentials Rust SDKc2pa-v0.90.15 and earlierNot stated
AdobeC2PA Toolc2patool-v0.27.15 and earlierNot stated
AdobeContent Credentials JS SDK@contentauth/[email protected] and earlierNot stated
AdobeC2pabefore 0.91.10.91.1
AdobeC2pa-webbefore 0.15.30.15.3
AdobeC2patoolbefore 0.28.10.28.1

Version data comes from the organisation that assigned the CVE. Confirm against the vendor advisory before deciding you are unaffected.

How the severity score breaks down

Attack vector
NetworkCan be exploited remotely over a network, including the internet.
Attack complexity
LowNo special conditions are needed; the attack works reliably.
Privileges required
NoneNo account or login is needed.
User interaction
NoneNo action by a victim is required.
Scope
UnchangedImpact stays within the vulnerable component.
Confidentiality
NoneNo data is disclosed.
Integrity
HighData or code can be modified at will.
Availability
NoneAvailability is not affected.

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N. Scored by CNA (adobe.com).

Official description

CAI Content Credentials is affected by an Improper Access Control vulnerability that could result in a Security feature bypass. An attacker could leverage this vulnerability to bypass security measures and gain unauthorized write access. Exploitation of this issue does not require user interaction.

Source: the CVE record as published by its numbering authority, via NVD and CVE.org.

The underlying weakness: Improper Access Control

The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.

How developers prevent this class of flaw

  • Very carefully manage the setting, management, and handling of privileges. Explicitly manage trust zones in the software.
  • Compartmentalize the system to have safe areas where trust boundaries can be unambiguously drawn. Do not allow sensitive data to go outside of the trust boundary and always be careful when interfacing with a compartment outside of the safe area. Ensure that appropriate compartmentalization is built into the system design, and the compartmentalization allows for and reinforces privilege separation functionality. Architects and designers should rely on the principle of least privilege to decide the appropriate time to use privileges and the time to drop privileges.

More Improper Access Control vulnerabilities (CWE-284)

Timeline

  1. CVE record published.
  2. CISA published its SSVC assessment (exploitation: none, automatable: yes, technical impact: partial).
  3. Record last changed materially (score, affected products, status or references).

References

Other vulnerabilities in Content Credentials Rust SDK

All Content Credentials Rust SDK vulnerabilities

Recent Improper Access Control vulnerabilities

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