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HIGH

CVE-2018-19052

CVSS v3

7.5

HIGH

EPSS Score

13.7 %

exploit probability, as of 2026-10-19

CISA KEV

No

known exploited

Exploitation

—

SSVC status

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Affected and fixed versions

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Vendor advisories

  • CVE-2018-19052 Red Hat Product Security

    lighttpd: path traversal in mod_alias_physical_handler in mod_alias.c

Full record on NVD

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.

Technical details

Published
2018-11-07

Frequently asked questions

What is 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.

Is CVE-2018-19052 actively exploited?

Active exploitation of CVE-2018-19052 has not been confirmed. Its EPSS score was 13.7% on 2026-10-19, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2018-19052?

CVE-2018-19052 has a CVSS v3 base score of 7.5 (HIGH severity).

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