CVE-2026-31958
7.5 · HIGHOverview
CVE-2026-31958 is a high-severity vulnerability affecting tornadoweb tornado. It was published on March 11, 2026 and has a CVSS 3.1 base score of 7.5 (HIGH).
This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
Technical Description
Tornado is a Python web framework and asynchronous networking library. In versions of Tornado prior to 6.5.5, the only limit on the number of parts in multipart/form-data is the max_body_size setting (default 100MB). Since parsing occurs synchronously on the main thread, this creates the possibility of denial-of-service due to the cost of parsing very large multipart bodies with many parts. This vulnerability is fixed in 6.5.5.
Remediation
Check the references section for vendor advisories and patches from tornadoweb. Update tornado to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| tornadoweb | tornado | >= 0, < 6.5.5 | Affected |
Frequently Asked Questions
What is CVE-2026-31958?
CVE-2026-31958 is a high-severity vulnerability affecting tornadoweb tornado. It was published on March 11, 2026 and has a CVSS 3.1 base score of 7.5 (HIGH).
How severe is CVE-2026-31958?
This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2026-31958?
Check the references section for vendor advisories and patches from tornadoweb. Update tornado to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2026-31958?
CyberStrike's AI-powered security agents can automatically detect CVE-2026-31958 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
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