CVE-2026-39819 Affecting etcd-3.5 package, versions <3.5.30-r1
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published10 May 2026
- disclosed7 May 2026
Introduced: 7 May 2026
NewCVE-2026-39819 (opens in a new tab)How to fix?
Upgrade Wolfi etcd-3.5 to version 3.5.30-r1 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream etcd-3.5 package and not the etcd-3.5 package as distributed by Wolfi.
See How to fix? for Wolfi relevant fixed versions and status.
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.