---
title: "CVE-2019-11072: lighttpd before 1.4.54 has a signed… | CubePath"
description: "lighttpd before 1.4.54 has a signed integer overflow, which might allow remote attackers to cause a denial of service (application crash) or possibly…"
language: en
source: https://cubepath.com/security/cve/CVE-2019-11072
---

# CVE-2019-11072: lighttpd before 1.4.54 has a signed… | CubePath

## Description

lighttpd before 1.4.54 has a signed integer overflow, which might allow remote attackers to cause a denial of service (application crash) or possibly have unspecified other impact via a malicious HTTP GET request, as demonstrated by mishandling of /%2F? in burl\_normalize\_2F\_to\_slash\_fix in burl.c. NOTE: The developer states "The feature which can be abused to cause the crash is a new feature in lighttpd 1.4.50, and is not enabled by default. It must be explicitly configured in the config file (e.g. lighttpd.conf). Certain input will trigger an abort() in lighttpd when that feature is enabled. lighttpd detects the underflow or realloc() will fail (in both 32-bit and 64-bit executables), also detected in lighttpd. Either triggers an explicit abort() by lighttpd. This is not exploitable beyond triggering the explicit abort() with subsequent application exit.

Official description from the CVE record, published by mitre. Copyright © 1999-2026 The MITRE Corporation. See [/security/cve/legal](https://cubepath.com/security/cve/legal) for the CVE license. [View the record on cve.org](https://www.cve.org/CVERecord?id=CVE-2019-11072)

## Key data

### EPSS

Exploit Prediction Scoring System by FIRST: an estimate of the probability that exploitation activity will be observed in the next 30 days.

Score

0.73762 (73.8% probability)

Percentile

99.5%

Scores of

Nov 10, 2026

Model

v2026.06.15

### CISA assessment as of Jun 11, 2024

Stakeholder-Specific Vulnerability Categorization (SSVC) decision points added by CISA.

Exploitation

Public proof of concept recorded by CISA

Automatable

no

Technical impact

partial

## References

Links listed in the CVE record. They lead to other sites, which CubePath does not control.

- [redmine.lighttpd.net/issues/2945](https://redmine.lighttpd.net/issues/2945)
- [github.com/lighttpd/lighttpd1.4/commit/32120d5b8b3203fc21cc…](https://github.com/lighttpd/lighttpd1.4/commit/32120d5b8b3203fc21ccb9eafb0eaf824bb59354)
- [107907](http://www.securityfocus.com/bid/107907)  (securityfocus.com) vdb-entry

## Timeline

1. ID reserved Apr 10, 2019
2. Record published Apr 10, 2019
3. Record last updated Aug 4, 2024

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## About CubePath

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Data from the CVE Program (MITRE), CISA KEV and FIRST EPSS. CVSS is owned by FIRST and used by permission. Not affiliated with or endorsed by MITRE, CISA or FIRST. Data as of Nov 10, 2026, 20:00 UTC. [Sources and licenses](https://cubepath.com/security/cve/legal)