CVE-2018-19052

HIGH

lighttpd < 1.4.50 - Path Traversal via Alias Configuration

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2018-19052. PoCs published by iveresk.

AI-analyzed exploit summary This repository contains a proof-of-concept exploit for CVE-2018-19052, a path traversal vulnerability in Apache's mod_alias module. The exploit demonstrates how an attacker can traverse directories above the intended alias target when specific configurations are in place.

Description

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.

Exploits (1)

nomisec WORKING POC 1 stars
by iveresk · poc
https://github.com/iveresk/cve-2018-19052

This repository contains a proof-of-concept exploit for CVE-2018-19052, a path traversal vulnerability in Apache's mod_alias module. The exploit demonstrates how an attacker can traverse directories above the intended alias target when specific configurations are in place.

Classification
Working Poc 90%
Attack Type
Info Leak
Complexity
Trivial
Reliability
Reliable
Target: Apache HTTP Server with mod_alias
No auth needed
Prerequisites: Apache HTTP Server with mod_alias configured in a specific way (alias does not end in '/', but target filesystem path does) · mod_dirlisting enabled for directory listing
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (3)

Core 3
Core References
Mailing List, Third Party Advisory vendor-advisory x_refsource_suse
http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00054.html
Mailing List, Third Party Advisory mailing-list x_refsource_mlist
https://lists.debian.org/debian-lts-announce/2022/01/msg00012.html

Scores

CVSS v3 7.5
EPSS 0.1408
EPSS Percentile 96.1%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Details

CWE
CWE-22
Status published
Products (7)
debian/debian_linux 9.0
lighttpd/lighttpd < 1.4.50
opensuse/backports_sle 15.0 (2 CPE variants)
opensuse/leap 15.0
opensuse/leap 15.1
suse/suse_linux_enterprise_server 11 sp3 (2 CPE variants)
suse/suse_linux_enterprise_server 12 (5 CPE variants)
Published Nov 07, 2018
Tracked Since Feb 18, 2026