Unrestricted File Upload RCE in Contact Form 7 for WordPress
CVE-2020-35489 affects the Contact Form 7 WordPress plugin before version 5.3.2. The vulnerability is an unrestricted file upload issue caused by insufficient validation of uploaded filenames, specifically because a filename may contain special characters. This weakness can allow an attacker to upload a crafted file in a way that bypasses intended restrictions and results in remote code execution on the server hosting the vulnerable WordPress instance.
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Impact, mitigation & remediation
What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
Impact
What an attacker gets, and what they’ve been doing with it.
Mitigation
If you can’t patch tonight, do this now.
Remediation
Patch, then assume compromise.
Exploits
No valid public exploits. Mallory filtered out 3 candidates as fakes, detection scripts, or README-only repos.
All candidate exploits were filtered out by Mallory's validation.
Affected products & vendors
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
Recent activity
2 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A specific vulnerability referenced in the context of a trojanized proof-of-concept exploit repository that led to malware infection when executed.
A vulnerability identifier used as bait in a trojanized fake PoC repository; the content does not describe the underlying flaw itself, but focuses on malicious code masquerading as an exploit for this CVE.
The version that knows your environment.
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.