VulnSocial

CVE-2026-7638Disclosure

LOWCVSS 5.3 · MEDIUM

Exploitation observed; activity peaked at 3 mentions and remains active

Immediate actions

  • Prioritize remediation for affected systems immediately
  • Assume compromise if assets are exposed
  • Track advisory updates for patch or workaround availability

Recommended action window: Immediate (within 24h)

NVD description

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.

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3.5/ 10 priority

Sources & remediation

Other references
Weakness type (CWE)
CWE-639

Priority

LOW

Exploitation

ACTIVE

PoC

NONE

Patch

NONE

Momentum

STABLE

Threat summary

  • Active exploitation appears in 1 classified signals
  • 4 mentions across 2 observed days
  • Momentum state: stable

What's happening

  • Active exploitation reported across 1 signal
  • Technical details provided in 3 signals
  • Disclosure: 2 classified signals
  • General: 1 classified signal
  • Peaked 1d ago at 3 mentions (2026-05-02); latest day: 1
  • 4 total mentions across 2 days

Deep dive

Activity timeline4 mentions / 2d
01223Mentions · 2026-05-02: 3Mentions · 2026-05-03: 1Active Exploitation · 2026-05-03: 1Technical Details · 2026-05-02: 305-0205-03
Signal classification3 categories
Disclosure
250.0%
General
125.0%
Active Exploitation
125.0%
Referenced assets3 URLs
Classification over time
DateTotalLabels
2026-05-023
Disclosure2General1
2026-05-031
Active Exploitation1
Full discourse4 posts
  • White Rabbitx 🏴‍☠️@TheRabbitPy
    Disclosure

    🎯 CVE-2026-7638: App Builder plugin exposes an insecure direct object reference in upload_avatar(), enabling unauthorized access to user-controlled data. #WordPress #IDOR #AppSec #CVE #Security https://nvd.nist.gov/vuln/detail/CVE-2026-7638

    Post summary

    The App Builder WordPress plugin contains an insecure direct object reference in its upload_avatar() function, allowing attackers to read or modify user-controlled data without authentication.

    1000029
    1.3K followersView on X
  • VulDB 🛡@vuldb
    Active Exploitation

    Some increased actor activities are shown targeting appcheap App Builder Plugin (CVE-2026-7638) https://vuldb.com/vuln/360794/cti

    Post summary

    The tweet indicates actors are increasingly targeting the App Builder Plugin vulnerability CVE-2026-7638, suggesting ongoing exploitation activity, but it provides no detailed exploit or remediation information.

    0000045
    2.1K followersView on X
  • CVEarity@CVEarity
    General

    ⚡ New CVE Alert: CVE-2026-7638 📊 Severity: 5.3 🚨 Risk Level: Medium 🧩 Affects: Wordpress Reference: https://nvd.nist.gov/vuln/detail/CVE-2026-7638 #CVE-2026-7638 #CVE #Medium #Wordpress #CyberSecurity #InfoSec https://t.co/ZEEQm996sW

    Post summary

    Tweet announces CVE-2026-7638 with a medium risk score affecting WordPress, without providing PoC, exploit, or mitigation details.

    0000054
    151 followersView on X
  • Vulmon Vulnerability Feed@VulmonFeeds
    Disclosure

    CVE-2026-7638 Insecure Direct Object Reference in App Builder WordPress Plugin Versions Up To 5.6.0 https://vulmon.com/vulnerabilitydetails?qid=CVE-2026-7638

    Post summary

    CVE-2026-7638 is disclosed as an insecure direct object reference flaw in App Builder WordPress Plugin versions up to 5.6.0, with affected version information but no exploitation or patch details provided.

    0000054
    4.0K followersView on X

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