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CVE-2022-41725 is a denial-of-service vulnerability in Go's mime/multipart.Reader.ReadForm and net/http request methods that invoke multipart parsing: FormFile, FormValue, ParseMultipartForm, and PostFormValue. The vulnerable parser failed to account for multipart metadata overhead, including map entries, part names, and MIME headers, allowing crafted forms to consume memory substantially beyond the documented maxMemory plus 10 MB allowance. It also imposed no limit on the number of temporary files created for file parts, allowing relatively small multipart requests to create many files and exhaust filesystem inodes. The fixed implementation accounts for parsing overhead and coalesces file parts into at most one temporary file.
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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 public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
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.
33 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A Go net/http and mime/multipart denial-of-service flaw caused by excessive resource consumption.
A Go net/http and mime/multipart denial-of-service vulnerability caused by excessive resource consumption.
Denial-of-service flaw in Go net/http and mime/multipart caused by excessive resource consumption.
A Go net/http and mime/multipart denial-of-service vulnerability caused by excessive resource consumption.
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.