CVE-2026-39819
Invoking "go bug" follows symlinks in predictable temporary filenames in cmd/go
CVE-2026-39819 is fixed in 15 products on 2 platforms, first by Go Programming Language 1.26.3, released May 7, 2026. It is not reported as exploited. Patch Radar priority: High.
HighFixed on 2 platforms
CVSS
7.5
Moderate
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0018
7th percentile
The "go bug" command writes to two files with predictable names in the system temporary directory (for example, "/tmp"). An attacker with access to the temporary directory can create a symlink in one of these names, causing "go bug" to overwrite the target of the symlink.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Windows apps | |||
| Go Programming Language | 1.26.3 | Go Programming Language 1.26.3 | May 7, 2026 |
| Linux | |||
| delve · RHEL 8 | 0:1.25.2-1.module+el8.10.0+23746+9db33b5e | RHSA-2026:22112 | Jun 1, 2026 |
| delve · almalinux 8 | 1.25.2-1.module_el8.10.0+4074+24330916 | ALSA-2026:22112 | Jun 1, 2026 |
| delve · ol 8 | 0:1.25.2-1.0.1.module+el8.10.0+90715+2d4d8dfd | ELSA-2026-22112 | Jun 2, 2026 |
| delve · rocky 8 | 0:1.25.2-1.module+el8.10.0+40035+ee0a7047 | RLSA-2026:22112 | Aug 26, 2026 |
| go-toolset · RHEL 8 | 0:1.25.10-1.module+el8.10.0+24308+5c4a16b7 | RHSA-2026:22112 | Jun 1, 2026 |
| go-toolset · RHEL 9 | 0:1.26.3-1.el9_8 | RHSA-2026:22121 | Jun 1, 2026 |
| go-toolset · almalinux 8 | 1.25.10-1.module_el8.10.0+4187+c45165c4 | ALSA-2026:22112 | Jun 1, 2026 |
| go-toolset · almalinux 9 | 1.26.3-1.el9_8 | ALSA-2026:22121 | Jun 1, 2026 |
| go-toolset · ol 10 | 0:1.26.5-1.0.1.el10_2 | ELSA-2026-22120 | Jul 21, 2026 |
| go-toolset · ol 8 | 0:1.25.9-1.0.1.module+el8.10.0+90898+1e3c34bb | ELSA-2026-22112 | Jun 2, 2026 |
| go-toolset · ol 9 | 0:1.26.3-1.0.1.el9_8 | ELSA-2026-22121 | Jun 23, 2026 |
| go1.25-openssl · opensuse-leap 16.0 | 1.25.12-160000.1.1 | OPENSUSE-SU-2026:21319-1 | Jul 13, 2026 |
| go1.25-openssl · sles 16.0 | 1.25.12-160000.1.1 | SUSE-SU-2026:22638-1 | Jul 13, 2026 |
| go1.26-openssl · opensuse-leap 16.0 | 1.26.4-160000.1.1 | OPENSUSE-SU-2026:21254-1 | Jul 7, 2026 |
| go1.26-openssl · sles 16.0 | 1.26.4-160000.1.1 | SUSE-SU-2026:22572-1 | Jul 7, 2026 |
| golang · RHEL 10 | 1.26.5-1.el10_0 | RHSA-2026:49702 | May 27, 2026 |
| golang · RHEL 8 | 0:1.25.10-1.module+el8.10.0+24308+5c4a16b7 | RHSA-2026:22112 | Jun 1, 2026 |
| golang · RHEL 9 | 0:1.26.3-1.el9_8 | RHSA-2026:22121 | Jun 1, 2026 |
| golang · almalinux 8 | 1.25.10-1.module_el8.10.0+4187+c45165c4 | ALSA-2026:22112 | Jun 1, 2026 |
| golang · almalinux 9 | 1.26.3-1.el9_8 | ALSA-2026:22121 | Jun 1, 2026 |
| golang · amzn 2023 | 1.25.10-1.amzn2023.0.1 | ALAS2023-2026-1743 | May 25, 2026 |
| golang · ol 10 | 0:1.26.5-1.0.1.el10_2 | ELSA-2026-22120 | Jul 21, 2026 |
| golang · ol 8 | 0:1.25.9-1.0.1.module+el8.10.0+90898+1e3c34bb | ELSA-2026-22112 | Jun 2, 2026 |
| golang · ol 9 | 0:1.26.3-1.0.1.el9_8 | ELSA-2026-22121 | Jun 23, 2026 |
| golang · rocky 10 | 0:1.26.3-4.el10_2 | RLSA-2026:22120 | Aug 26, 2026 |
| golang · rocky 8 | 0:1.25.10-1.module+el8.10.0+40200+0fd0f175 | RLSA-2026:22112 | Aug 26, 2026 |
| golang · rocky 9 | 0:1.26.3-1.el9_8 | RLSA-2026:22121 | Aug 26, 2026 |
| golang-1.26 · Debian 14 | 1.26.3-1 | DEBIAN-CVE-2026-39819 | May 27, 2026 |
| golang-bin · RHEL 8 | 0:1.25.10-1.module+el8.10.0+24308+5c4a16b7 | RHSA-2026:22112 | Jun 1, 2026 |
| golang-bin · RHEL 9 | 0:1.26.3-1.el9_8 | RHSA-2026:22121 | Jun 1, 2026 |
| golang-bin · almalinux 8 | 1.25.10-1.module_el8.10.0+4187+c45165c4 | ALSA-2026:22112 | Jun 1, 2026 |
| golang-bin · almalinux 9 | 1.26.3-1.el9_8 | ALSA-2026:22121 | Jun 1, 2026 |
| golang-bin · amzn 2023 | 1.25.10-1.amzn2023.0.1 | ALAS2023-2026-1743 | May 25, 2026 |
| golang-bin · ol 10 | 0:1.26.5-1.0.1.el10_2 | ELSA-2026-22120 | Jul 21, 2026 |
| golang-bin · ol 8 | 0:1.25.9-1.0.1.module+el8.10.0+90898+1e3c34bb | ELSA-2026-22112 | Jun 2, 2026 |
| golang-bin · ol 9 | 0:1.26.3-1.0.1.el9_8 | ELSA-2026-22121 | Jun 23, 2026 |
| golang-docs · RHEL 8 | 0:1.25.10-1.module+el8.10.0+24308+5c4a16b7 | RHSA-2026:22112 | Jun 1, 2026 |
| golang-docs · RHEL 9 | 0:1.26.3-1.el9_8 | RHSA-2026:22121 | Jun 1, 2026 |
| golang-docs · almalinux 8 | 1.25.10-1.module_el8.10.0+4187+c45165c4 | ALSA-2026:22112 | Jun 1, 2026 |
| golang-docs · almalinux 9 | 1.26.3-1.el9_8 | ALSA-2026:22121 | Jun 1, 2026 |
| golang-docs · amzn 2023 | 1.25.10-1.amzn2023.0.1 | ALAS2023-2026-1743 | May 25, 2026 |
| golang-docs · ol 10 | 0:1.26.5-1.0.1.el10_2 | ELSA-2026-22120 | Jul 21, 2026 |
| golang-docs · ol 8 | 0:1.25.9-1.0.1.module+el8.10.0+90898+1e3c34bb | ELSA-2026-22112 | Jun 2, 2026 |
| golang-docs · ol 9 | 0:1.26.3-1.0.1.el9_8 | ELSA-2026-22121 | Jun 23, 2026 |
| golang-misc · RHEL 8 | 0:1.25.10-1.module+el8.10.0+24308+5c4a16b7 | RHSA-2026:22112 | Jun 1, 2026 |
| golang-misc · RHEL 9 | 0:1.26.3-1.el9_8 | RHSA-2026:22121 | Jun 1, 2026 |
| golang-misc · almalinux 8 | 1.25.10-1.module_el8.10.0+4187+c45165c4 | ALSA-2026:22112 | Jun 1, 2026 |
| golang-misc · almalinux 9 | 1.26.3-1.el9_8 | ALSA-2026:22121 | Jun 1, 2026 |
| golang-misc · amzn 2023 | 1.25.10-1.amzn2023.0.1 | ALAS2023-2026-1743 | May 25, 2026 |
| golang-misc · ol 10 | 0:1.26.5-1.0.1.el10_2 | ELSA-2026-22120 | Jul 21, 2026 |
| golang-misc · ol 8 | 0:1.25.9-1.0.1.module+el8.10.0+90898+1e3c34bb | ELSA-2026-22112 | Jun 2, 2026 |
| golang-misc · ol 9 | 0:1.26.3-1.0.1.el9_8 | ELSA-2026-22121 | Jun 23, 2026 |
| golang-race · RHEL 8 | 0:1.25.10-1.module+el8.10.0+24308+5c4a16b7 | RHSA-2026:22112 | Jun 1, 2026 |
| golang-race · RHEL 9 | 0:1.26.3-1.el9_8 | RHSA-2026:22121 | Jun 1, 2026 |
| golang-race · almalinux 8 | 1.25.10-1.module_el8.10.0+4187+c45165c4 | ALSA-2026:22112 | Jun 1, 2026 |
| golang-race · almalinux 9 | 1.26.3-1.el9_8 | ALSA-2026:22121 | Jun 1, 2026 |
| golang-race · ol 10 | 0:1.26.5-1.0.1.el10_2 | ELSA-2026-22120 | Jul 21, 2026 |
| golang-race · ol 8 | 0:1.25.9-1.0.1.module+el8.10.0+90898+1e3c34bb | ELSA-2026-22112 | Jun 2, 2026 |
| golang-race · ol 9 | 0:1.26.3-1.0.1.el9_8 | ELSA-2026-22121 | Jun 23, 2026 |
| golang-shared · amzn 2023 | 1.25.10-1.amzn2023.0.1 | ALAS2023-2026-1743 | May 25, 2026 |
| golang-src · RHEL 8 | 0:1.25.10-1.module+el8.10.0+24308+5c4a16b7 | RHSA-2026:22112 | Jun 1, 2026 |
| golang-src · RHEL 9 | 0:1.26.3-1.el9_8 | RHSA-2026:22121 | Jun 1, 2026 |
| golang-src · almalinux 8 | 1.25.10-1.module_el8.10.0+4187+c45165c4 | ALSA-2026:22112 | Jun 1, 2026 |
| golang-src · almalinux 9 | 1.26.3-1.el9_8 | ALSA-2026:22121 | Jun 1, 2026 |
| golang-src · amzn 2023 | 1.25.10-1.amzn2023.0.1 | ALAS2023-2026-1743 | May 25, 2026 |
| golang-src · ol 10 | 0:1.26.5-1.0.1.el10_2 | ELSA-2026-22120 | Jul 21, 2026 |
| golang-src · ol 8 | 0:1.25.9-1.0.1.module+el8.10.0+90898+1e3c34bb | ELSA-2026-22112 | Jun 2, 2026 |
| golang-src · ol 9 | 0:1.26.3-1.0.1.el9_8 | ELSA-2026-22121 | Jun 23, 2026 |
| golang-tests · RHEL 8 | 0:1.25.10-1.module+el8.10.0+24308+5c4a16b7 | RHSA-2026:22112 | Jun 1, 2026 |
| golang-tests · RHEL 9 | 0:1.26.3-1.el9_8 | RHSA-2026:22121 | Jun 1, 2026 |
| golang-tests · almalinux 8 | 1.25.10-1.module_el8.10.0+4187+c45165c4 | ALSA-2026:22112 | Jun 1, 2026 |
| golang-tests · almalinux 9 | 1.26.3-1.el9_8 | ALSA-2026:22121 | Jun 1, 2026 |
| golang-tests · amzn 2023 | 1.25.10-1.amzn2023.0.1 | ALAS2023-2026-1743 | May 25, 2026 |
| golang-tests · ol 10 | 0:1.26.5-1.0.1.el10_2 | ELSA-2026-22120 | Jul 21, 2026 |
| golang-tests · ol 8 | 0:1.25.9-1.0.1.module+el8.10.0+90898+1e3c34bb | ELSA-2026-22112 | Jun 2, 2026 |
| golang-tests · ol 9 | 0:1.26.3-1.0.1.el9_8 | ELSA-2026-22121 | Jun 23, 2026 |
| govulncheck-vulndb · opensuse-leap 16.0 | 0.0.20260723T184607-160000.1.1 | OPENSUSE-SU-2026:21483-1 | Jul 30, 2026 |
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