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CVE-2026-13156 is a cross-site request forgery vulnerability in the MailerSend WordPress plugin before version 1.0.8. The vulnerable configuration-delete action checks whether the requester has the manage_options capability but does not validate a nonce, allowing a forged request to be accepted in the context of an authenticated administrator session. By inducing a logged-in administrator to visit a crafted page, an attacker can trigger deletion of the plugin's SMTP configuration and deactivation of the plugin. The issue results in loss of the plugin's mail delivery configuration and interruption of email functionality for the affected WordPress site.
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No valid public exploits. Mallory filtered out 1 candidate as fakes, detection scripts, or README-only repos.
All candidate exploits were filtered out by Mallory's validation.
1 sources tracked across advisories and community write-ups. News coverage will land here when it surfaces.
No news coverage yet. Advisories and community discussion only.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.