What is CVE-2024-5193?

CVE-2024-5193 is a medium-severity vulnerability in Ritlabs Tinyweb, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 5.3/10. Published 2024-05-22.

How severe is CVE-2024-5193?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Vulnerability in Ritlabs Tinyweb

CVE-2024-5193

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.

Published 2024-05-22 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N.

EPSS exploit prediction

EPSS: 0.007 (49.9th percentile), scored 2026-10-02.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 50th percentile — 49.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000

Affected products

Ritlabs Tinyweb — versions 1.94
Ritlabs Tinyweb Server — versions 1.94, 1.99

Weakness classification (CWE)

References

vuldb.com/ (technical-description, VDB Entry, Third Party Advisory, patch, vdb-entry, mitigation)
vuldb.com/ (signature, Permissions Required, permissions-required, VDB Entry)
vuldb.com/ (VDB Entry, Third Party Advisory, third-party-advisory)
github.com/DMCERTCE/CRLF_Tiny (Exploit, exploit)
github.com/maximmasiutin/TinyWeb/commit/d49c3da6a97e950975b18626878f3ee1f082358e (patch)
github.com/maximmasiutin/TinyWeb/releases/tag/v1.99 (patch)
www.masiutin.net/tinyweb-cve-2024-5193.html (mitigation)

Frequently asked questions

What is CVE-2024-5193?: CVE-2024-5193 is a medium-severity vulnerability in Ritlabs Tinyweb, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 5.3/10. Published 2024-05-22.
How severe is CVE-2024-5193?: Medium severity. CVSS v3 base score is 5.3 out of 10.