CVE-2025-57783

Improper header parsing may lead to request smuggling

Medium · published January 26, 2026

CVSS v3.1
5.3
EPSS
0%
Percentile
40.1
In the wild
Unconfirmed
What it is

Improper header parsing may lead to request smuggling has been identified in Hiawatha webserver version 11.7 which allows an unauthenticated attacker to access restricted resources managed by Hiawatha webserver.

The record
Technical detail
CVSS v3.1
5.3 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
CVSS v4.0
Not supplied
EPSS
0.00479 · 40.1th percentile
Published
2026-01-26T17:45Z
EPSS history
Timeline
  • 26 JAN 17:45Z
    Improper header parsing may lead to request smuggling
    cvelistv5