Detections
Analytics

SCA: security update for github.com/openbao/openbao (GHSA-r65v-xgwc-g56j)

medium Tenable Self-Hosted Container Security Plugin ID 440688

Description

There are packages installed that are affected by a vulnerability referenced in the following CVE:

 - 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 via `io.Copy` with no upper bound on the number of bytes written.
 An attacker who controls or compromises the OCI registry referenced in the victim's configuration can
 serve a crafted image containing a decompression bomb that decompresses to an arbitrarily large file. The
 SHA256 integrity check occurs after the full file is written to disk, meaning the hash mismatch is
 detected only after the damage (disk exhaustion) has already occurred. This allow the attacker to replace
 **legit plugin image** with no need to change its signature. Version 2.5.3 contains a patch.
 (CVE-2026-39396)

Solution

Update the github.com/openbao/openbao library and its related packages to version 0.0.0-20260420180337-2b2a901aa9f7 or later.

See Also

https://github.com/advisories/GHSA-r65v-xgwc-g56j

Plugin Details

Severity: Medium

ID: 440688

Version: Revision 1.3

Type: Local

Family: SCA Checks

Published: 4/21/2026

Updated: 7/2/2026

Supported Sensors: Tenable Cloud Security, Tenable Self-Hosted Container Security

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.73

Vendor

Vendor Severity: Low

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 6.1

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C

CVSS Score Source: CVE-2026-39396

CVSS v3

Risk Factor: Medium

Base Score: 6.5

Temporal Score: 5.9

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

Vulnerability Information

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 4/21/2026

Vulnerability Publication Date: 4/21/2026

Reference Information

CVE: CVE-2026-39396