Improper header parsing may lead to request smuggling
Priority LOW 30Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- Low · None · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA.
Summary
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.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00472 41st percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Hiawatha | Hiawatha Web server | 11.7 – 8.5 | — | No fix listed | CNA |
- Hiawatha Web server VendorHiawatha Affected 11.7 – 8.5 Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:hiawatha-webserver:hiawatha:11.7:*:*:*:*:*:*:* | 11.7 | Vulnerable | Hiawatha-webserver |
- cpe:2.3:a:hiawatha-webserver:hiawatha:11.7:*:*:*:*:*:*:* Versions 11.7 Vulnerable ·Hiawatha-webserver
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2025-57783
- 2026-10-03 Alias added: GHSA-mrpv-h52h-rxhw
References
More Hiawatha-webserver Hiawatha vulnerabilities
- TI-2019-06000 In Hiawatha before 10.8.4, a remote attacker is able to do directory traversal if AllowDotFiles is enabled. CVSS 3.0HIGH 8.1
- TI-2025-35667 Tomahawk authentication timing attack due to usage of 'strcmp' CVSS 3.1MEDIUM 4.0
Sources
- CVE-2025-57783 · CVE Program
- CVE-2025-57783 · NVD
- FIRST EPSS
- GHSA-mrpv-h52h-rxhw · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences