Medium severity5.9GHSA Advisory· Published May 12, 2026· Updated May 14, 2026
CVE-2026-42545
CVE-2026-42545
Description
Granian is a Rust HTTP server for Python applications. From 0.2.0 to 2.7.4, Granian aborts a worker process if a WSGI application returns an invalid HTTP response header name or value. The WSGI response conversion path uses .unwrap() on both the header name and header value constructors, so malformed output from the application becomes a process abort instead of a handled error. This vulnerability is fixed in 2.7.4.
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Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
granianPyPI | >= 0.2.0, < 2.7.4 | 2.7.4 |
Affected products
4- Range: >= 0.2.0, < 2.7.4
- osv-coords3 versions
< 0.9.3-r0+ 2 more
- (no CPE)range: < 0.9.3-r0
- (no CPE)range: < 0.9.3-r0
- (no CPE)range: >= 0.2.0, < 2.7.4
Patches
Vulnerability mechanics
References
3News mentions
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