CVE-2025-57783 | BDVDB-2026-312404 Detail

HiawathaHiawatha Web server

Description#

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.

Impact#

Per CVSS v3.1: confidentiality impact low, integrity impact none, availability impact none. Attack vector: network.

Weaknesses#

CWE-444 Inconsistent Interpretation of HTTP Requests ('HTTP Request Smuggling')

References#

https://gitlab.com/hsleisink/hiawatha/-/blame/master/src/http.c?ref_type=heads#L205

Exploit#

No public exploit known

History#

Version 12026-01-26Record published in the CVE List.

Published

Published: 2026-01-26
Last modified: 2026-01-26

Vendor information

Vendor: Hiawatha
Product: Hiawatha Web server

All Hiawatha vulnerabilities

Score

5.3 Medium

EPSS

less than 1%, Very Low

Estimated chance of exploitation in the next 30 days. EPSS percentile: 41.2.

KEV

Not listed in the CISA Known Exploited Vulnerabilities catalog.

Impact

Not classified

Action

No specific action is recorded in the source data. Check the references for vendor guidance.

Affected Systems

Vulnerable
>= 11.7 and <= 8.5
Fixed
Not stated

Scoring System

CVSS v4.0

Not available

CVSS v3.1

5.3 Medium

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Metric breakdown
Attack Vector	Network
Attack Complexity	Low
Privileges Required	None
User Interaction	None
Scope	Unchanged
Confidentiality	Low
Integrity	None
Availability	None

CVSS v3.0

Not available

CVSS v2

Not available

Source: CVE List v5 (record); CISA KEV (kev, action); FIRST EPSS (epss).