CVE-2018-19052

What it is

An issue was discovered in mod_alias_physical_handler in mod_alias.c in lighttpd before 1.4.50. There is potential ../ path traversal of a single directory above an alias target, with a specific mod_alias configuration where the matched alias lacks a trailing '/' character, but the alias target filesystem path does have a trailing '/' character.

At a glance

Exploitability

Can be exploited over the network without logging in. High risk of data exposure.

Exploit odds

13.7% chance of exploitation in the next 30 days (EPSS). Higher than most.

Fix

A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

1. 2018-11-07 05:29 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-06-17 01:48 UTC Last updatedMost recent change to the record

Why it ranks here

• Exploited in the wild: no, CISA does not list it.
• Exploit odds: 13.7% in the next 30 days (EPSS).
• Severity: 7.5 HIGH (CVSS).
• Fix: a patch or advisory is linked.

Details

Published

2018-11-07 05:29 UTC

Last modified

2026-06-17 01:48 UTC

Exploit probability

13.7% · EPSS, next 30 days

Weakness

CWE-22 · Path traversal

Record status

Modified

Affected

• Lighttpd < 1.4.50
• Opensuse Backports Sle 15.0
• Opensuse Leap 15.0
• Opensuse Leap 15.1
• Suse Linux Enterprise Server 11
• Suse Linux Enterprise Server 12
• Debian Linux 9.0

Attack profile CVSS 3.1 · 7.5

Attack vector

Network

Complexity

Low

Privileges needed

None

User interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

Read https://cve-list.com/agent/cve/CVE-2018-19052.md and follow it. Check whether this project is affected by CVE-2018-19052. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

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