Detections
Analytics

SCA: security update for activestorage (GHSA-qcfx-2mfw-w4cg)

medium Tenable Self-Hosted Container Security Plugin ID 439112

Description

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

 - Active Storage allows users to attach cloud and local files in Rails applications. Prior to versions
 8.1.2.1, 8.0.4.1, and 7.2.3.1, `DirectUploadsController` accepts arbitrary metadata from the client and
 persists it on the blob. Because internal flags like `identified` and `analyzed` are stored in the same
 metadata hash, a direct-upload client can set these flags to skip MIME detection and analysis. This allows
 an attacker to upload arbitrary content while claiming a safe `content_type`, bypassing any validations
 that rely on Active Storage's automatic content type identification. Versions 8.1.2.1, 8.0.4.1, and
 7.2.3.1 contain a patch. (CVE-2026-33173)

Solution

Update the activestorage library and its related packages to version 7.2.3.1 or later.

See Also

https://github.com/advisories/GHSA-qcfx-2mfw-w4cg

Plugin Details

Severity: Medium

ID: 439112

Version: Revision 1.12

Type: Local

Family: SCA Checks

Published: 3/24/2026

Updated: 6/30/2026

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

Risk Information

VPR

Risk Factor: Low

Score: 1.2

Percentile: 0.01

Vendor

Vendor Severity: Medium

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

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

CVSS Score Source: CVE-2026-33173

CVSS v3

Risk Factor: Medium

Base Score: 5.3

Temporal Score: 4.6

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

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

CVSS v4

Risk Factor: Medium

Base Score: 5.3

Threat Score: 1.3

Threat Vector: CVSS:4.0/E:U

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

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 3/23/2026

Vulnerability Publication Date: 3/23/2026

Reference Information

CVE: CVE-2026-33173

cwe: CWE-925