CVE-2026-42545Disclosure

LOWCVSS 5.9 · MEDIUM

Signal is active with 1 mentions in latest observed window

Immediate actions

Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

NVD 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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0.0/ 10 priority

Sources & remediation

Other references

Weakness type (CWE)

CWE-248CWE-755

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

NONE

Momentum

NONE

Threat summary

1 mentions across 1 observed day

What's happening

Technical details provided in 1 signal
Disclosure: 1 classified signal
1 total mentions across 1 day

Deep dive

Activity timeline1 mentions / 1d

Signal classification1 categories

Disclosure

1100.0%

Referenced assets1 URL

By indicator

https://www.cve.org/CVERecord?id=CVE-2026-42545

Full discourse1 post

CVE@CVEnew149d
Disclosure
CVE-2026-42545 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 hea… https://www.cve.org/CVERecord?id=CVE-2026-42545
Post summary
Granian (Rust HTTP server for Python) has CVE‑2026‑42545, where an invalid HTTP response header can trigger worker process termination; the snippet gives technical details but no exploit, patch, or active exploitation information.
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