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CVE-2025-12673 is a critical vulnerability in the Flex QR Code Generator plugin for WordPress, affecting all versions up to and including 1.2.6. The vulnerability exists in the update_qr_code() function, which lacks proper file type validation, allowing unauthenticated attackers to upload arbitrary files to the server. This flaw can be exploited to upload executable files, potentially leading to remote code execution on the affected WordPress site.
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What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
What an attacker gets, and what they’ve been doing with it.
If you can’t patch tonight, do this now.
Patch, then assume compromise.
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.
7 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
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.