Detections
Analytics

SCA: security update for activestorage (GHSA-xr9x-r78c-5hrm)

critical Tenable Cloud Security Plugin ID 445492

Description

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

 - Action Pack is a framework for handling and responding to web requests. In versions prior to 7.2.3.2,
 8.0.5.1 and 8.1.3.1, Active Storage does not disable libvips operations marked unsafe for untrusted
 content, allowing a crafted upload to invoke such an operation. Consuming applications are affected when
 configured to use libvips and accept image uploads from untrusted users. An unauthenticated attacker may
 exploit this behavior to read arbitrary files accessible to the Rails process, including environment
 variables and application secrets. Exposure of credentials such as secret_key_base or external-service
 tokens may enable remote code execution or lateral movement. This issue has been fixed in versions
 7.2.3.2, 8.0.5.1 and 8.1.3.1. (CVE-2026-66066)

Solution

Update the activestorage library and its related packages to version 7.2.3.2 or later.

See Also

https://github.com/advisories/GHSA-xr9x-r78c-5hrm

Plugin Details

Severity: Critical

ID: 445492

Version: Revision 1.2

Type: Local

Family: SCA Checks

Published: 7/30/2026

Updated: 7/31/2026

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

Risk Information

VPR

Risk Factor: High

Score: 7.6

Percentile: 98.4

Vendor

Vendor Severity: Critical

CVSS v2

Risk Factor: High

Base Score: 7.5

Temporal Score: 5.9

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

CVSS Score Source: CVE-2026-66066

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.8

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

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

CVSS v4

Risk Factor: Critical

Base Score: 9.5

Threat Score: 9

Threat Vector: CVSS:4.0/E:P

Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H

Vulnerability Information

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 7/30/2026

Vulnerability Publication Date: 7/30/2026

Reference Information

CVE: CVE-2026-66066