# Tornado vulnerabilities Source: https://junglewise.ai/threats/technologies/tornado-tornado Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats Updated: 9 November 2026, 03:07 UTC. Rebuilt every hour. Data: https://junglewise.ai/threats/technologies/tornado-tornado.json License: CC BY 4.0 with a link back Junglewise Threat Intelligence has tracked 10 vulnerabilities in Tornado: 1 in the last 7 days and 10 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2026-123535, was published on 8 November 2026. 2 vulnerabilities in the last four weeks, down 75% on the four before (8). ## Counts - Last 7 days: 1 - Last 30 days: 2 - Last 90 days: 10 - All time: 10 (0 critical, 0 exploited in the wild) ## Latest Tornado vulnerabilities - [CVE-2026-123535: Tornado cookie attribute injection in set_cookie max_age](https://junglewise.ai/threats/cve-2026-123535-tornado-before-6-6-does-not-validate-the-max-age-argument-of) (medium, CVSS 4.2, published 8 Nov 2026) - [CVE-2026-116577: Tornado HTTP header parser quadratic CPU consumption via line folding](https://junglewise.ai/threats/cve-2026-116577-tornado-is-a-python-web-framework-and-asynchronous-networking) (medium, CVSS 5.3, published 26 Oct 2026) - [CVE-2026-103262: Tornado CurlAsyncHTTPClient unbounded memory accumulation in decompression](https://junglewise.ai/threats/cve-2026-103262-tornado-curlasynchttpclient-enforces-no-response-size-limit) (high, CVSS 7.5, published 1 Oct 2026) - [CVE-2026-103261: Tornado unbounded query string field parsing DoS](https://junglewise.ai/threats/cve-2026-103261-tornado-unbounded-query-string-argument-count-allows-event-loop) (medium, CVSS 5.3, published 1 Oct 2026) - [CVE-2026-91992: Tornado CurlAsyncHTTPClient credential leak via handle reuse](https://junglewise.ai/threats/cve-2026-91992-tornado-curlasynchttpclient-credential-leak-via-handle-reuse) (medium, CVSS 5.9, published 15 Sep 2026) - [CVE-2026-91991: Tornado cookie attribute injection via capitalized kwargs](https://junglewise.ai/threats/cve-2026-91991-tornado-cookie-attribute-injection-via-capitalized-kwargs) (medium, CVSS 5.4, published 15 Sep 2026) - [CVE-2026-91990: Tornado memory amplification vulnerability in multipart form parsing](https://junglewise.ai/threats/cve-2026-91990-tornado-memory-amplification-vulnerability-in-multipart-form) (high, CVSS 7.5, published 15 Sep 2026) - [CVE-2024-58384: Tornado CurlAsyncHTTPClient CRLF injection in request headers](https://junglewise.ai/threats/cve-2024-58384-tornado-curlasynchttpclient-crlf-injection-in-request-headers) (medium, CVSS 5.4, published 15 Sep 2026) - [CVE-2024-14029: Tornado HTTP request smuggling via duplicate Transfer-Encoding headers](https://junglewise.ai/threats/cve-2024-14029-tornado-http-request-smuggling-via-duplicate-transfer-encoding) (high, CVSS 7.5, published 15 Sep 2026) - [CVE-2023-54397: Tornado HTTP request smuggling in Content-Length parsing](https://junglewise.ai/threats/cve-2023-54397-tornado-http-request-smuggling-in-content-length-parsing) (high, CVSS 7.5, published 15 Sep 2026) ## Most severe Tornado vulnerabilities - [CVE-2026-103262: Tornado CurlAsyncHTTPClient unbounded memory accumulation in decompression](https://junglewise.ai/threats/cve-2026-103262-tornado-curlasynchttpclient-enforces-no-response-size-limit) (high, CVSS 7.5, published 1 Oct 2026) - [CVE-2026-91990: Tornado memory amplification vulnerability in multipart form parsing](https://junglewise.ai/threats/cve-2026-91990-tornado-memory-amplification-vulnerability-in-multipart-form) (high, CVSS 7.5, published 15 Sep 2026) - [CVE-2023-54397: Tornado HTTP request smuggling in Content-Length parsing](https://junglewise.ai/threats/cve-2023-54397-tornado-http-request-smuggling-in-content-length-parsing) (high, CVSS 7.5, published 15 Sep 2026) - [CVE-2024-14029: Tornado HTTP request smuggling via duplicate Transfer-Encoding headers](https://junglewise.ai/threats/cve-2024-14029-tornado-http-request-smuggling-via-duplicate-transfer-encoding) (high, CVSS 7.5, published 15 Sep 2026) - [CVE-2026-91992: Tornado CurlAsyncHTTPClient credential leak via handle reuse](https://junglewise.ai/threats/cve-2026-91992-tornado-curlasynchttpclient-credential-leak-via-handle-reuse) (medium, CVSS 5.9, published 15 Sep 2026) - [CVE-2026-91991: Tornado cookie attribute injection via capitalized kwargs](https://junglewise.ai/threats/cve-2026-91991-tornado-cookie-attribute-injection-via-capitalized-kwargs) (medium, CVSS 5.4, published 15 Sep 2026) - [CVE-2024-58384: Tornado CurlAsyncHTTPClient CRLF injection in request headers](https://junglewise.ai/threats/cve-2024-58384-tornado-curlasynchttpclient-crlf-injection-in-request-headers) (medium, CVSS 5.4, published 15 Sep 2026) - [CVE-2026-103261: Tornado unbounded query string field parsing DoS](https://junglewise.ai/threats/cve-2026-103261-tornado-unbounded-query-string-argument-count-allows-event-loop) (medium, CVSS 5.3, published 1 Oct 2026) - [CVE-2026-116577: Tornado HTTP header parser quadratic CPU consumption via line folding](https://junglewise.ai/threats/cve-2026-116577-tornado-is-a-python-web-framework-and-asynchronous-networking) (medium, CVSS 5.3, published 26 Oct 2026) - [CVE-2026-123535: Tornado cookie attribute injection in set_cookie max_age](https://junglewise.ai/threats/cve-2026-123535-tornado-before-6-6-does-not-validate-the-max-age-argument-of) (medium, CVSS 4.2, published 8 Nov 2026) ## Vulnerabilities per week 2 vulnerabilities in the last four weeks, down 75% on the four before (8). | Week of | Vulns | Critical | Exploited | | --- | --- | --- | --- | | 17 Aug 2026 | 0 | 0 | 0 | | 24 Aug 2026 | 0 | 0 | 0 | | 31 Aug 2026 | 0 | 0 | 0 | | 7 Sep 2026 | 0 | 0 | 0 | | 14 Sep 2026 | 6 | 0 | 0 | | 21 Sep 2026 | 0 | 0 | 0 | | 28 Sep 2026 | 2 | 0 | 0 | | 5 Oct 2026 | 0 | 0 | 0 | | 12 Oct 2026 | 0 | 0 | 0 | | 19 Oct 2026 | 0 | 0 | 0 | | 26 Oct 2026 | 1 | 0 | 0 | | 2 Nov 2026 | 1 | 0 | 0 | | 9 Nov 2026 | 0 | 0 | 0 | ## Sources NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories. Rebuilt every hour. Cite as: Junglewise Threat Intelligence, "Tornado vulnerabilities", https://junglewise.ai/threats/technologies/tornado-tornado, 9 November 2026.