Subscriber-level option modification via unchecked AJAX handlers
Published Mar 21, 2026 · Updated Mar 21, 2026
Missing authorization in AtomChat 1.1.7 and earlier allows remote authenticated users to modify WordPress plugin options via AJAX requests. The atomchat_update_auth_ajax and atomchat_update_layout_ajax handlers write request-supplied values to plugin options without checking user capabilities. Subscriber-level access is sufficient to replace API keys, authentication keys, and layout settings, altering configuration without directly disclosing data or executing code.
Summary
What happened
Missing authorization in AtomChat 1.1.7 and earlier allows remote authenticated users to modify WordPress plugin options via AJAX requests. The atomchat_update_auth_ajax and atomchat_update_layout_ajax handlers write request-supplied values to plugin options without checking user capabilities. Subscriber-level access is sufficient to replace API keys, authentication keys, and layout settings, altering configuration without directly disclosing data or executing code.
The record
- CVE
- CVE-2026-1253
- Published
- Mar 21, 2026
- Updated
- Mar 21, 2026
- Vendor
- AtomChat
- Product
- Group Chat & Video Chat by AtomChat
- Classifications
- CWE-862, T1565.001
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Mar 21, 2026CVE publishedPublication date reported by the CVE source.
- Mar 21, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=* <=1.1.7
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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