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CVE-2026-7638

25
FAUCET Score

The App Builder – Create Native Android & iOS Apps On The Flight plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to and including 5.6.0. This is due to missing authorization validation in the `upload_avatar()` function, which accepts an attacker-controlled `user_id` parameter from the POST request body and uses it to update user meta without verifying that the authenticated requester owns or has permission to modify the target account. This makes it possible for authenticated attackers, with Subscriber-level access and above, to overwrite the profile avatar of any arbitrary user on the site, including administrators, by supplying a target `user_id` in the request body to the `/wp-json/app-builder/v1/upload-avatar` endpoint.

First published: May 2, 2026Last modified: May 4, 2026

Impacted Technologies

VendorProductVersion(s)CPE
AppcheapApp Builder – Create Native Android & IOS Apps On The Flight
>= 0, <= 5.6.0CNA affecteddefault unaffected

CVSS Data

CVSS version used by this source: 3.1

5.3MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
1.4
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.31%
Probability of exploitation in next 30 days
EPSS Percentile
22.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0031 is in the 13th percentile among its peer group of 23,723 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

plugins.trac.wordpress.org / browser/app-builder/tags/5.5.10/includes/Di/Service/Auth/UploadAvatar.php
plugins.trac.wordpress.org / browser/app-builder/tags/5.5.10/includes/Di/Service/Auth/UploadAvatar.php
plugins.trac.wordpress.org / browser/app-builder/tags/5.5.10/includes/Traits/Permission.php
plugins.trac.wordpress.org / browser/app-builder/tags/5.6.0/includes/Di/Service/Auth/UploadAvatar.php
plugins.trac.wordpress.org / browser/app-builder/tags/5.6.0/includes/Di/Service/Auth/UploadAvatar.php
plugins.trac.wordpress.org / browser/app-builder/tags/5.6.0/includes/Traits/Permission.php
plugins.trac.wordpress.org / browser/app-builder/trunk/includes/Di/Service/Auth/UploadAvatar.php
plugins.trac.wordpress.org / browser/app-builder/trunk/includes/Di/Service/Auth/UploadAvatar.php
plugins.trac.wordpress.org / browser/app-builder/trunk/includes/Traits/Permission.php
wordfence.com / threat-intel/vulnerabilities/id/2d532ffc-c6f1-41e3-9a59-0706802ab8e2