CVE-2024-5193: A security vulnerability has been detected in Ritlabs TinyWeb Server 1.94

This week

MEDIUM 5.3REMOTEDOWNGRADE

CVE-2024-5193 is a medium-severity flaw (CVSS 5.3) affecting tinyweb. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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

Why this priority

Public exploit reference
Remotely exploitable, no login, no user action

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	5.3 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.7% (top 48%)
CISA exploited list	No
Weakness	CWE-74, CWE-93
Published	2024-05-22
Last modified	2026-06-17

Publisher (CNA): VulDB · Vendor: ritlabs

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2024-05-22 11:15 UTCPublished CVE record published
2026-06-17 08:15 UTCUpdated Record last modified

ritlabs tinyweb DOWNGRADE

Affected: 1.94

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.94

1. Check installed version

apt-cache policy tinyweb || rpm -q tinyweb || tinyweb --version

2. No fixed release: DOWNGRADE to a release before 1.94 (Debian / Ubuntu)

apt-cache madison tinyweb sudo apt install tinyweb=<VERSION_BEFORE_1.94> sudo apt-mark hold tinyweb

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list tinyweb sudo dnf downgrade tinyweb-<VERSION_BEFORE_1.94> sudo dnf versionlock add tinyweb

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2024-5193?

tinyweb: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2024-5193 being exploited?

CVE-2024-5193 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2024-5193 affect?

CVE-2024-5193 affects tinyweb. Severity is medium (CVSS 5.3). 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

How urgent is CVE-2024-5193?

Priority 41/100. Public exploit reference; Remotely exploitable, no login, no user action

Related CVEs

CVE-2026-29046 HIGH 8.2 UPGRADE TinyWeb is a web server (HTTP, HTTPS) written in Delphi for Win32
CVE-2026-28497 CRITICAL 9.1 UPGRADE TinyWeb is a web server (HTTP, HTTPS) written in Delphi for Win32
CVE-2026-27633 HIGH 7.5 UPGRADE TinyWeb is a web server (HTTP, HTTPS) written in Delphi for Win32
CVE-2026-27630 HIGH 7.5 UPGRADE TinyWeb is a web server (HTTP, HTTPS) written in Delphi for Win32
CVE-2026-27613 CRITICAL 9.8 UPGRADE TinyWeb is a web server (HTTP, HTTPS) written in Delphi for Win32

References

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