CVE-2026-116577

The Python web framework Tornado is vulnerable to quadratic CPU consumption in versions prior to 6.6 . The issue resides in the HTTP header parser , which accepts obsolete line folding and repeatedly concatenates short continuation lines. This allows an unauthenticated client to block the IOLoop ...

CVE-2026-116577 Tornado: Quadratic CPU usage when parsing HTTP headers with line folding

Tornado is a Python web framework and asynchronous networking library. Prior to 6.6, Tornado's HTTP header parser accepts obsolete line folding and repeatedly concatenates short continuation lines, causing quadratic CPU consumption on the IOLoop thread. An unauthenticated client can submit a head...

CVE-2026-107833

OWASP Coraza WAF is a golang modsecurity compatible web application firewall library. From 3.0.0 until 3.8.0, ProcessResponse in internal/bodyprocessors/json.go passes the ignoreJSONRecursionLimit value of -1 to readJSON, while the recursive guard only stops at zero. A network attacker who can...

msgpack5: Quadratic parsing in the streaming decoder

Impact The streaming decoder reparses an incomplete container from the beginning whenever another chunk arrives. A remote peer can split one valid MessagePack value across many small chunks, causing quadratic CPU usage and blocking the event loop. Patches The decoder now preserves incremental...

CVE-2026-102990

basic-ftp is an FTP client for Node.js. Prior to 6.2.1, Client.list can be forced by a malicious or compromised FTP server to spend quadratic CPU time parsing a directory listing because the RELINE expression in src/parseListUnix.ts backtracks across adjacent variable-length owner and group field...

NPM: js-yaml: YAML merge-key chains can force quadratic CPU consumption in js-yaml

NPM: js-yaml: YAML merge-key chains can force quadratic CPU consumption in js-yaml vulnerability discovered by ? in WordPress Npm js-yaml versions = 5.0.0, = 5.1.0...

tornado: Tornado Quadratic DoS via Crafted Multipart Parameters

A denial of service flaw has been discovered in the Tornado networking library. Affected versions of Tornado us an inefficient algorithm when parsing parameters for HTTP header values, potentially causing a DoS. The parseparam function in httputil.py is used to parse specific HTTP header values,...

AZL-47860 CVE-2024-7592 affecting package python3 for versions less than 3.9.19-4

There is a LOW severity vulnerability affecting CPython, specifically the 'http.cookies' standard library module. When parsing cookies that contained backslashes for quoted characters in the cookie value, the parser would use an algorithm with quadratic complexity, resulting in excess CPU resourc...