Is CVE-2026-33658 actively exploited?

No active exploitation of CVE-2026-33658 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-33658 be exploited remotely?

Yes. CVE-2026-33658 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-33658?

CVE-2026-33658 has a CVSS score of 2.3 (LOW).

HOME VULNERABILITIESCVE-2026-33658

LOW

CVE-2026-33658

CWE-770Published: March 26, 2026· Updated: Mar 30, 2026

2.3

CVSS v3.1

EPSS:0.04%probability of exploitation in 30 daysPercentile:13.8th

Official Description

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

Active Storage's proxy controller does not limit the number of byte ranges in an HTTP Range header. A request with thousands of small ranges causes disproportionate CPU usage compared to a normal request for the same file, possibly resulting in a DoS vulnerability. Versions 8.1.2.1, 8.0.4.1, and 7.2.3.1 contain a patch.

NVD Source

Technical Analysis

CVE-2026-33658 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

CVSS v3.1 Vector Breakdown

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges Req.Low

User InteractionNone

ScopeX

Impact

Confidentiality

Integrity

Availability

CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X