CVE-2025-61724: medium-severity vulnerability in Go standard library net/textproto
Excessive CPU consumption in Reader.ReadResponse in net/textproto
Published · Updated
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13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 5.3epss 0.6%
The Reader.ReadResponse function constructs a response string through repeated string concatenation of lines. When the number of lines in a response is large, this can cause excessive CPU consumption.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Affected products
Go standard library · net/textprotoRelated 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-2023-45290MEDIUMMemory exhaustion in multipart form parsing in net/textproto and net/httpEPSS 1.2%CVE-2026-94440HIGHMemory limit bypass when parsing MIME headers in net/textproto, mime/multipartEPSS 0.5%CVE-2026-42507MEDIUMArbitrary inputs are included in errors without any escaping in net/textprotoEPSS 0.4%