CVE-2025-41368: Problem in the Small HTTP Server v3.06.36 service

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HIGH 8.1UPGRADE

CVE-2025-41368 is a high-severity flaw (CVSS 8.1) affecting small http server. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Problem in the Small HTTP Server v3.06.36 service. An authenticated path traversal vulnerability in '/' allows remote users to bypass the intended restrictions of SecurityManager and display any file if they have the appropriate permissions outside the document root configured on the server.

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	8.1 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.6% (top 50%)
CISA exploited list	No
Weakness	CWE-22
Published	2026-03-26
Last modified	2026-06-17

Publisher (CNA): Spanish National Cybersecurity Institute, S.A. (INCIBE) · Vendor: smallsrv

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

Am I affected?

Timeline

2026-03-26 12:16 UTCPublished CVE record published
2026-06-17 09:22 UTCUpdated Record last modified

smallsrv small http server UPGRADE

Affected: >= 3.06.36 and < 3.06.38

Fixed in: 3.06.38

Safe to downgrade to: a release before 3.06.36

1. Check installed version

apt-cache policy small-http-server || rpm -q small-http-server || small-http-server --version

2. UPGRADE to 3.06.38 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade small-http-server

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade small-http-server

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

3. If no update is available yet, DOWNGRADE to a release before 3.06.36 (Debian / Ubuntu)

apt-cache madison small-http-server sudo apt install small-http-server=<VERSION_BEFORE_3.06.36> sudo apt-mark hold small-http-server

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list small-http-server sudo dnf downgrade small-http-server-<VERSION_BEFORE_3.06.36> sudo dnf versionlock add small-http-server

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-2025-41368?

small http server: upgrade to 3.06.38. Exact commands for each OS are on this page.

Is CVE-2025-41368 being exploited?

CVE-2025-41368 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-2025-41368 affect?

CVE-2025-41368 affects small http server. Severity is high (CVSS 8.1). Problem in the Small HTTP Server v3.06.36 service. An authenticated path traversal vulnerability in '/' allows remote users to bypass the intended restrictions of SecurityManager and display any file if they have the appropriate permissions

How urgent is CVE-2025-41368?

Priority 41/100. High severity

Related CVEs

CVE-2025-41359 HIGH 7.8 UPGRADE Vulnerability related to an unquoted service path in Small HTTP Server 3.06.36, specifically affecting the exe

References

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