CVE-2026-94440: high-severity vulnerability in Go standard library net/textproto
Memory limit bypass when parsing MIME headers in net/textproto, mime/multipart
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21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 7.5epss 0.5%
Parsing a multipart form can bypass memory limits and read an arbitrarily long line into memory when the remaining limit at the start of a part is less than 400 bytes.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Related CVEs — Go standard library net/textproto
In the same product, most dangerous first.
CVE-2023-24534HIGHExcessive memory allocation in net/http and net/textprotoEPSS 1.9%CVE-2023-24536HIGHExcessive resource consumption in net/http, net/textproto and mime/multipartEPSS 1.5%CVE-2022-41725—Excessive resource consumption in mime/multipartEPSS 1.2%CVE-2023-45290MEDIUMMemory exhaustion in multipart form parsing in net/textproto and net/httpEPSS 1.2%CVE-2025-61724MEDIUMExcessive CPU consumption in Reader.ReadResponse in net/textprotoEPSS 0.6%CVE-2026-42507MEDIUMArbitrary inputs are included in errors without any escaping in net/textprotoEPSS 0.4%