Infinite loop Affecting bandit package, versions >=1.4.0 <1.14.0
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-HEX-BANDIT-21755440
- published27 Oct 2026
- disclosed26 Oct 2026
- creditUnknown
Introduced: 26 Oct 2026
NewCVE-2026-115269 (opens in a new tab)How to fix?
Upgrade bandit to version 1.14.0 or higher.
Overview
bandit is a HTTP server for Plug and WebSock apps.
Affected versions of this package are vulnerable to Infinite loop via the HTTP/2 request body reader of mtrudel bandit allows an unauthenticated remote attacker to hold stream processes open indefinitely via WINDOW_UPDATE or empty SETTINGS frames sent while a Plug reads the request body. In Bandit.HTTP2.Stream.do_read_data/4, receiving either a stream WINDOW_UPDATE or an empty SETTINGS frame ends the current wait without yielding body data, resetting the full read_timeout countdown. By periodically sending these 9-byte frames just before each timeout expires, an attacker keeps read_body and its underlying stream process blocked indefinitely, exhausting server resources.