CVE-2025-47910: Golang 1.10 · When using http.CrossOriginProtection, the AddInsecureBypassPattern method can
Affects golang-1.10Source GCVE Database
Not known to be exploited · CVSS 5.4 Medium.
Data as of 5 Nov 2026, 00:01 UTC
- 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:NExploitation evidence
Disclosed: evidence found.
CVE published 22 Sep 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 4 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, 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
- ubuntu.com/security/CVE-2025-47910 (opens in a new tab)
- cve.org/CVERecord?id=CVE-2025-47910 (opens in a new tab)
- go.dev/cl/699275 (opens in a new tab)
- go.dev/issue/75054 (opens in a new tab)
- groups.google.com/g/golang-announce/c/PtW9VW21NPs/m/DJhMQ-m5AQAJ (opens in a new tab)
- pkg.go.dev/vuln/GO-2025-3955 (opens in a new tab)