CVE-2026-33658
Last modified
CVE-2026-33658 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. 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. EPSS estimates a 0.43% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
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
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Rubyonrails | Rails | < 7.2.3.1 |
| Rubyonrails | Rails | >= 8.0.0, < 8.0.4.1 |
| Rubyonrails | Rails | >= 8.1.0, < 8.1.2.1 |
References
- https://github.com/rails/rails/releases/tag/v7.2.3.1Product, Release Notes
- https://github.com/rails/rails/releases/tag/v8.0.4.1Product, Release Notes
- https://github.com/rails/rails/releases/tag/v8.1.2.1Product, Release Notes
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-2026-33658?
How severe is CVE-2026-33658?
How do I fix CVE-2026-33658?
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2026
- CVE-2026-33651WWBN AVideo is an open source video platform. In versions up…8.8
- CVE-2026-33653Ulloady is a file uploader script with multi-file upload sup…5.4
- CVE-2026-33654nanobot is a personal AI assistant. Prior to version 0.1.6, …9.8
- CVE-2026-33655New API is a large language mode (LLM) gateway and artificia…7.7
- CVE-2026-33656EspoCRM is an open source customer relationship management a…9.1
- CVE-2026-33657EspoCRM is an open source customer relationship management a…5.4
- CVE-2026-33659EspoCRM is an open source customer relationship management a…3.1
- CVE-2026-3366IBM InfoSphere Optim Test Data Fabrication 1.0.0, 1.0.0.1, 1…7.5
- CVE-2026-33660n8n is an open source workflow automation platform. Prior to…8.8
- CVE-2026-33661Pay is an open-source payment SDK extension package for vari…7.5
- CVE-2026-33662OP-TEE is a Trusted Execution Environment (TEE) designed as …7.5
- CVE-2026-33663n8n is an open source workflow automation platform. Prior to…6.5
Are you affected by CVE-2026-33658?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST