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VulnerabilityPublished Updated

CVE-2025-47910: Golang 1.10 · When using http.CrossOriginProtection, the AddInsecureBypassPattern method can

Affects golang-1.10Source GCVE Database

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Authoritative record:CVE-2025-47910· Medium 5.4

Not known to be exploited · CVSS 5.4 Medium.

Data as of 5 Nov 2026, 00:01 UTC

CVSS 3.1 base score
5.4Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.3% chance of exploitation in 30 days – higher than 28% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 22 Sep 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 4 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, users should carefully review usage of http.CrossOriginProtection and the AddInsecureBypassPattern method to avoid unintended bypasses.

Description

CVE-2025-47910 is a medium severity vulnerability in Golang 1.10 related to the http.CrossOriginProtection feature. The AddInsecureBypassPattern method can bypass more requests than intended, causing CrossOriginProtection to skip validation and forward the original request path. This may allow requests to be handled by different handlers without the intended security protections.

References

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