TI-2024-04819 Aliases CVE-2024-5193 GHSA-f49h-4f4j-3rjc

Ritlabs TinyWeb Server Request crlf injection

HIGH 70CWE-74Published 2024-05-22 · Updated 2026-01-05

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Attack requirements: None
Impact type: —
Confidentiality · integrity · availability: None · Low · None
Fix status: Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA.

Summary

A security vulnerability has been detected in Ritlabs TinyWeb Server 1.94. This vulnerability affects unknown code of the component Request Handler. The manipulation with the input %0D%0A leads to crlf injection. It is possible to initiate the attack remotely. The exploit has been disclosed publicly and may be used. Upgrading to version 1.99 is able to resolve this issue. The identifier of the patch is d49c3da6a97e950975b18626878f3ee1f082358e. It is suggested to upgrade the affected component. The vendor was contacted early about this disclosure but did not respond in any way.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.00663 51st percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by the CNA and NVD

Fix Fixed TinyWeb Server (Ritlabs): 1.99

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: Poc
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
maximmasiutin	TinyWeb Server	1.94	1.99	Patch available	CNA

TinyWeb Server Vendormaximmasiutin Affected 1.94 Fixed in 1.99 Patch available CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:ritlabs:tinyweb:1.94:::::::*	1.94	Vulnerable	maximmasiutin

cpe:2.3:a:ritlabs:tinyweb:1.94:*:*:*:*:*:*:* Versions 1.94 Vulnerable ·maximmasiutin

Remediation

Fix · CNA TinyWeb Server (Ritlabs) Fixed in 1.99

Timeline

2026-10-02 Threatist record created from CVE-2024-5193
2026-10-03 Alias added: GHSA-f49h-4f4j-3rjc
2026-10-06 EPSS moved to the 50th–90th percentile

References

Exploit 1

https://github.com/DMCERTCE/CRLF_Tiny

Patch 2

Other 1

https://www.masiutin.net/tinyweb-cve-2024-5193.html

TI-2026-18299 TinyWeb CGI Command Injection CVSS 4.0CRITICAL 10.0
TI-2026-21999 CGI Parameter Injection (Bypass of STRICT_CGI_PARAMS and EscapeShellParam) CVSS 4.0CRITICAL 10.0
TI-2026-22760 TinyWeb: Integer Overflow in `_Val` (HTTP Request Smuggling) CVSS 4.0CRITICAL 9.3
TI-2026-23191 TinyWeb: HTTP Header Control Character Injection into CGI Environment CVSS 4.0CRITICAL 9.2
TI-2024-22622 TinyWeb 1.94 and below allows unauthenticated remote attackers to cause a denial of… CVSS 3.1HIGH 8.6
TI-2026-22015 TinyWeb has Unbounded Content-Length Memory Exhaustion (DoS) CVSS 4.0HIGH 8.7

See all 7 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences