Golang 1.10: The various Is methods (IsPrivate, IsLoopback, etc) did not work as expected for IPv4-mapped IPv6
Affects golang-1.10Source GCVE Database
Not known to be exploited · CVSS 9.8 Critical · fixed in 1.18.1-1ubuntu1~16.04.6+esm1 : patch golang-1.10 as a priority.
Data as of 9 Nov 2026, 14:35 UTC
- Patch
- Available – fixed in 1.18.1-1ubuntu1~16.04.6+esm1, 1.18.1-1ubuntu1~18.04.4+esm1, 1.18.1-1ubuntu1~20.04.3 +7
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HExploitation evidence
Disclosed: evidence found.
CVE published 5 Jun 2024
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 9 Nov 2026.
What to do
Upgrade to a fixed release listed under Affected software.
Patches and advisories
Affected software
| Product | Affected | Fixed in |
|---|---|---|
Ubuntu 24.04 LTSgolang-1.21pkg:deb/ubuntu/golang-1.21?arch=source&distro=nobleOther threats | Affected
| Fixed in
|
Ubuntu 24.04 LTSgolang-1.22pkg:deb/ubuntu/golang-1.22?arch=source&distro=nobleOther threats | Affected
| Fixed in
|
Ubuntu 22.04 LTSgolang-1.17pkg:deb/ubuntu/golang-1.17?arch=source&distro=jammyOther threats | Affected
| Fixed in– |
Ubuntu 22.04 LTSgolang-1.18pkg:deb/ubuntu/golang-1.18?arch=source&distro=jammyOther threats | Affected
| Fixed in
|
Ubuntu 22.04 LTSgolang-1.20pkg:deb/ubuntu/golang-1.20?arch=source&distro=jammyOther threats | Affected
| Fixed in– |
Ubuntu 22.04 LTSgolang-1.21pkg:deb/ubuntu/golang-1.21?arch=source&distro=jammyOther 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
A patch is available and should be applied. Fixed versions include 1.18.1-1ubuntu1~16.04.6+esm1, 1.18.1-1ubuntu1~18.04.4+esm1, 1.18.1-1ubuntu1~20.04.3, 1.21.1-1~ubuntu20.04.3, 1.22.2-2~20.04.1, and others as listed in the established facts. Users should upgrade to these fixed versions to remediate the vulnerability.
Description
Golang versions prior to certain fixed releases contain a vulnerability where the Is methods (such as IsPrivate and IsLoopback) do not correctly identify IPv4-mapped IPv6 addresses, returning false when they should return true. This flaw affects network address classification in these versions.
References
- ubuntu.com/security/CVE-2024-24790 (opens in a new tab)
- cve.org/CVERecord?id=CVE-2024-24790 (opens in a new tab)
- groups.google.com/g/golang-announce/c/XbxouI9gY7k (opens in a new tab)
- github.com/golang/go/issues/67680 (opens in a new tab)
- go.dev/cl/590316 (opens in a new tab)
- go.dev/issue/67680 (opens in a new tab)
- groups.google.com/g/golang-announce/c/XbxouI9gY7k/m/TuoGEhxIEwAJ (opens in a new tab)
- pkg.go.dev/vuln/GO-2024-2887 (opens in a new tab)
- github.com/golang/go/commit/12d5810cdb1f73cf23d7a86462143e9463317fca (opens in a new tab)
- github.com/golang/go/commit/051bdf3fd12a40307606ff9381138039c5f452f0 (opens in a new tab)
- ubuntu.com/security/notices/USN-6886-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-7109-1 (opens in a new tab)