Golang 1.10: Due to the design of the name constraint checking algorithm, the processing time of some inputs scale
Affects golang-1.10Source GCVE Database
Not known to be exploited · CVSS 7.5 High.
Data as of 5 Nov 2026, 12:51 UTC
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HExploitation evidence
Disclosed: evidence found.
CVE published 29 Oct 2025
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 5 Nov 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
Ubuntu 26.04 LTSgolang-1.23pkg:deb/ubuntu/golang-1.23?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTSgolang-1.24pkg:deb/ubuntu/golang-1.24?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 25.10golang-1.23pkg:deb/ubuntu/golang-1.23?arch=source&distro=questingOther threats | Affected
| Fixed in– |
Ubuntu 25.10golang-1.24pkg:deb/ubuntu/golang-1.24?arch=source&distro=questingOther threats | Affected
| Fixed in– |
Ubuntu 25.10golang-1.25pkg:deb/ubuntu/golang-1.25?arch=source&distro=questingOther threats | Affected
| Fixed in– |
Ubuntu 24.04 LTSgolang-1.21pkg:deb/ubuntu/golang-1.21?arch=source&distro=nobleOther threats | Affected
| Fixed in– |
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
Until a fix is available, consider limiting the size or complexity of certificate chains processed or applying application-level resource constraints to mitigate potential denial of service.
Description
A vulnerability in Golang 1.10 and certain related versions causes the name constraint checking algorithm to have non-linear processing time relative to certificate size. This affects programs that validate arbitrary certificate chains, potentially leading to denial of service due to high resource consumption.
References
- ubuntu.com/security/CVE-2025-58187 (opens in a new tab)
- cve.org/CVERecord?id=CVE-2025-58187 (opens in a new tab)
- groups.google.com/g/golang-announce/c/4Emdl2iQ_bI/m/qZN5nc-mBgAJ (opens in a new tab)
- github.com/golang/go/issues/75681 (opens in a new tab)
- github.com/golang/go/commit/f0c69db15aae2eb10bddd8b6745dff5c2932e8f5 (opens in a new tab)
- github.com/golang/go/commit/f334417e71f8b078ad64035bddb6df7f8910da6c (opens in a new tab)