Improper Handling of Exceptional Conditions Affecting granian package, versions [,2.7.4)
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-PYTHON-GRANIAN-16635309
- published11 May 2026
- disclosed6 May 2026
- creditZ-Bra0
Introduced: 6 May 2026
CVE-2026-42545 (opens in a new tab)How to fix?
Upgrade granian to version 2.7.4 or higher.
Overview
granian is an A Rust HTTP server for Python applications
Affected versions of this package are vulnerable to Improper Handling of Exceptional Conditions through the WSGI response conversion process. An attacker can cause the worker process to abort by supplying or influencing invalid HTTP response header names or values, such as headers containing spaces, carriage returns, line feeds, or null bytes. This is only exploitable if the WSGI application emits invalid headers, either due to application bugs or attacker-controlled input.