What is CVE-2026-39396?

CVE-2026-39396 is a low-severity vulnerability in Openbao, classified under Uncontrolled Resource Consumption. CVSS score: 3.1/10. Published 2026-04-21.

How severe is CVE-2026-39396?

Low severity. CVSS v3 base score is 3.1 out of 10.

Resource exhaustion in Openbao

CVE-2026-39396

OpenBao is an open source identity-based secrets management system. Prior to version 2.5.3, `ExtractPluginFromImage()` in OpenBao's OCI plugin downloader extracts a plugin binary from a container image by streaming decompressed tar data vi…

Vulnerability class: DoS (Denial of Service)

EPSS: 0.001 (17.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 3.1 (Low). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:L.

Affected products

Openbao — versions < 2.5.3

Weakness classification (CWE)

References

https://github.com/openbao/openbao/security/advisories/GHSA-r65v-xgwc-g56j (x_refsource_CONFIRM, Exploit, Vendor Advisory)

Frequently asked questions

What is CVE-2026-39396?: CVE-2026-39396 is a low-severity vulnerability in Openbao, classified under Uncontrolled Resource Consumption. CVSS score: 3.1/10. Published 2026-04-21.
How severe is CVE-2026-39396?: Low severity. CVSS v3 base score is 3.1 out of 10.