Description
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.
Affected products
golang: go
References5
- pkg.go.dev/vuln/GO-2025-4015 Vendor Advisory
- go.dev/cl/709859 Patch
- go.dev/issue/75716 Issue Tracking
- groups.google.com/g/golang-announce/c/4Emdl2iQ_bI Mailing ListRelease Notes
- www.openwall.com/lists/oss-security/2025/10/08/1 Mailing ListRelease NotesThird Party Advisory
Metrics
- CVSS 3.1
-
5.3
MEDIUM
Score source: CNA
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L - EPSS — exploit probability
- 1% percentile: 47 · as of 10 November 2026
- CWE
- CWE-770
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