Expired pointer dereference in Ruby on Rails - CVE-2026-33173

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Main Vulnerability Database Vulnerabilities #VU124273

Expired pointer dereference in Ruby on Rails - CVE-2026-33173

Published: March 24, 2026


Vulnerability identifier: #VU124273
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2026-33173
CWE-ID: CWE-825
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vendor: Rails
Affected software:
Ruby on Rails

Detailed vulnerability description

The vulnerability allows a remote attacker to gain access to sensitive information.

The vulnerability exists due to DirectUploadsController accepts arbitrary metadata from the client and persists it on the blob. A remote attacker can gain access to sensitive information on the target system.


How to mitigate CVE-2026-33173

Install updates from vendor's website.

Sources