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CVE-2025-58187VulnerabilityPublished Updated

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

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Authoritative record:CVE-2025-58187· High 7.5

Not known to be exploited · CVSS 7.5 High.

Data as of 5 Nov 2026, 12:51 UTC

CVSS 3.1 base score
7.5High
How severe the flaw is on the 0–10 CVSS scale.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 29 Oct 2025

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq 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

ProductAffectedFixed in
Ubuntu 26.04 LTSgolang-1.23pkg:deb/ubuntu/golang-1.23?arch=source&distro=resoluteOther threatsAffected
  • =1.23.10-1
Fixed in–
Ubuntu 26.04 LTSgolang-1.24pkg:deb/ubuntu/golang-1.24?arch=source&distro=resoluteOther threatsAffected
  • =1.24.4-1ubuntu1
  • =1.24.9-1
  • =1.24.13-2
Fixed in–
Ubuntu 25.10golang-1.23pkg:deb/ubuntu/golang-1.23?arch=source&distro=questingOther threatsAffected
  • =1.23.8-1
  • =1.23.10-1
  • =1.23.10-1ubuntu0.2
Fixed in–
Ubuntu 25.10golang-1.24pkg:deb/ubuntu/golang-1.24?arch=source&distro=questingOther threatsAffected
  • 1.24.2-1 – 1.24.4-1ubuntu1
4 affected builds
Fixed in–
Ubuntu 25.10golang-1.25pkg:deb/ubuntu/golang-1.25?arch=source&distro=questingOther threatsAffected
  • =1.25.0-0ubuntu1
  • =1.25.7-2~25.10.1
Fixed in–
Ubuntu 24.04 LTSgolang-1.21pkg:deb/ubuntu/golang-1.21?arch=source&distro=nobleOther threatsAffected
  • 1.21.1-1 – 1.21.9-1ubuntu0.1
11 affected builds
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

Community reviews

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