CVE-2018-19052
An issue was discovered in mod_alias_physical_handler in mod_alias.c in lighttpd before 1.4.50....
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.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- None
- Availability
- None
Exploit likelihood
What each source reports
NVD Score used
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.
- Record
CVE-2018-19052- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N - CVSS 2.0
- 5.0 Medium
AV:N/AC:L/Au:N/C:P/I:N/A:N - Weakness
- CWE-22
- Updated
- 2026-11-02
CVE List No score
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.
- Record
CVE-2018-19052- Updated
- 2026-11-02
EUVDEUVD-2018-10769 No score
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.
- Record
EUVD-2018-10769- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-f959-jhqc-rqpv
An issue was discovered in mod_alias_physical_handler in mod_alias.c in lighttpd before 1.4.50....
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.
- Record
GHSA-f959-jhqc-rqpv- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N - Weakness
- CWE-22
- Updated
- 2026-11-02
OSV
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.
- Record
CVE-2018-19052- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N - Updated
- 2026-11-02
OSVDEBIAN-CVE-2018-19052
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.
- Record
DEBIAN-CVE-2018-19052- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N - Updated
- 2026-11-02
Show 4 moreShow less
OSVUBUNTU-CVE-2018-19052
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.
- Record
UBUNTU-CVE-2018-19052- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N - CVSS 3.0
- 7.5 High
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N - Updated
- 2026-11-02
OSVopenSUSE-SU-2019:2347-1 No score
Security update for lighttpd
This update for lighttpd to version 1.4.54 fixes the following issues:
Security issues fixed:
- CVE-2018-19052: Fixed a path traversal in mod_alias (boo#1115016).
- Changed the default TLS configuration of lighttpd for better security out-of-the-box (boo#1087369).
- Record
openSUSE-SU-2019:2347-1- Updated
- 2026-11-02
OSVopenSUSE-SU-2024:10585-1 No score
lighttpd-1.4.59-2.1 on GA media
These are all security issues fixed in the lighttpd-1.4.59-2.1 package on the GA media of openSUSE Tumbleweed.
- Record
openSUSE-SU-2024:10585-1- Updated
- 2026-11-02
OSVUSN-4775-1 No score
lighttpd vulnerabilities
It was discovered that Lighttpd did not properly sanitized the string used in basic HTTP authentication method. A remote attacker could use this to inject arbitrary log entries and maybe obtain sensitive information. This issue only affected Ubuntu 14.04 ESM and Ubuntu 16.04 ESM. (CVE-2015-3200)
It was discovered that Lighttpd did not properly sanitized the string used in alias. A remote attacker could use this to access the content of the directory above the alias and obtain sensitive information. (CVE-2018-19052)
- Record
USN-4775-1- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
lighttpdDebian:12 |
before 1.4.52-1 | 1.4.52-1 |
lighttpdDebian:13 |
before 1.4.52-1 | 1.4.52-1 |
lighttpdDebian:14 |
before 1.4.52-1 | 1.4.52-1 |
lighttpdDebian:9 |
before 1.4.45-1+deb9u1, plus listed versions 1.4.45-1 |
1.4.45-1+deb9u1 |
lighttpdUbuntu:Pro:14.04:LTS |
before 1.4.33-1+nmu2ubuntu2.1+esm1, plus listed versions 1.4.31-3ubuntu31.4.33-1ubuntu11.4.33-1+nmu2ubuntu11.4.33-1+nmu2ubuntu21.4.33-1+nmu2ubuntu2.1 |
1.4.33-1+nmu2ubuntu2.1+esm1 |
lighttpdUbuntu:Pro:16.04:LTS |
before 1.4.35-4ubuntu2.1+esm1, plus listed versions 1.4.35-4ubuntu11.4.35-4ubuntu21.4.35-4ubuntu2.1 |
1.4.35-4ubuntu2.1+esm1 |
lighttpdUbuntu:Pro:18.04:LTS |
before 1.4.45-1ubuntu3.18.04.1+esm1, plus listed versions 1.4.45-1ubuntu11.4.45-1ubuntu31.4.45-1ubuntu3+esm11.4.45-1ubuntu3.18.041.4.45-1ubuntu3.18.04+esm11.4.45-1ubuntu3.18.04.1 |
1.4.45-1ubuntu3.18.04.1+esm1 |
lighttpdSUSE:Package Hub 15 |
before 1.4.54-bp151.4.3.1 | 1.4.54-bp151.4.3.1 |
lighttpdSUSE:Package Hub 15 SP1 |
before 1.4.54-bp151.4.3.1 | 1.4.54-bp151.4.3.1 |
lighttpdopenSUSE:Leap 15.0 |
before 1.4.54-bp151.4.3.1 | 1.4.54-bp151.4.3.1 |
lighttpdopenSUSE:Leap 15.1 |
before 1.4.54-bp151.4.3.1 | 1.4.54-bp151.4.3.1 |
lighttpdopenSUSE:Tumbleweed |
before 1.4.59-2.1 | 1.4.59-2.1 |
Public exploits
Links only. Every CVE stores no exploit code.
| Source | Link | Date |
|---|---|---|
| PoC in GitHub | iveresk/cve-2018-19052 | 2022-07-15 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV, PoC in GitHub |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2018-19052 is a high vulnerability (CVSS 7.5) in Lighttpd, published November 7, 2018. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 13.7%, the 96th percentile. Fixed in lighttpd 1.4.52-1.
References
github.com/lighttpd/lighttpd1.4/commit/2105dae0f9d7a964375ce681e53cb165375f84c1
lists.opensuse.org/opensuse-security-announce/2019-10/msg00054.html
lists.debian.org/debian-lts-announce/2022/01/msg00012.html
nvd.nist.gov/vuln/detail/CVE-2018-19052
security-tracker.debian.org/tracker/CVE-2018-19052
Show 17 moreShow less
ubuntu.com/security/CVE-2018-19052
cve.org/CVERecord?id=CVE-2018-19052
bugzilla.suse.com/1087369
suse.com/security/cve/CVE-2018-19052