CVE-2025-61729Within HostnameError.Error(), when constructing an error string, there is no limit to the number of hosts that will be printed out.
Updated under an hour ago ()
Does this affect you?
It affects golang go. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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Within HostnameError.Error(), when constructing an error string, there is no limit to the number of hosts that will be printed out. Furthermore, the error string is constructed by repeated string concatenation, leading to quadratic runtime. Therefore, a certificate provided by a malicious actor can result in excessive resource consumption.
- CVSS
- 7.5 HIGH (v3.1, NVD)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Weakness (CWE)
- CWE-295
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Not given
- NVD analysis
- Analyzed
- Record last updated
- Oct 18, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
golang go golang:go | before 1.24.11; from 1.25.0 before 1.25.5 | NVD |
References
- https://go.dev/cl/725920patch
- https://go.dev/issue/76445issue-tracking, patch
- https://groups.google.com/g/golang-announce/c/8FJoBkPddm4mailing-list, release-notes
- https://pkg.go.dev/vuln/GO-2025-4155vendor-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.