Vulnerability record · CVE-2019-19240 · published 22 November 2019

CVE-2019-19240: Embedthis goahead out-of-bounds write vulnerability

Embedthis · Goahead

Embedthis GoAhead before 5.0.1 mishandles redirected HTTP requests with a large Host header. The GoAhead WebsRedirect uses a static host buffer that has a limited length and can overflow. This can cause a copy of the Host header to fail, leaving that buffer uninitialized, which may leak uninitialized data in a response.

5.3 CVSS 3.1 Medium EPSS 1.5% · top 26.0% CWE-787 · Out-of-bounds writeCWE-908 · Use of uninitialized resource

5.3CVSS 3.1 base score, v2 5.0

1.5%EPSS exploitation probability, 30 days

NoNot in CISA KEV

1Affected product versions listed by NVD

6References, 2 tagged exploit

17 Jun 2026Last modified by NVD

Description

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

Goahead Embedthis

References

Link	Tags
https://github.com/embedthis/goahead/issues/289	ExploitThird Party Advisory
https://github.com/embedthis/goahead/issues/290	Third Party Advisory
https://github.com/embedthis/goahead/releases/tag/v5.0.1	Release Notes
https://github.com/embedthis/goahead/issues/289	ExploitThird Party Advisory
https://github.com/embedthis/goahead/issues/290	Third Party Advisory
https://github.com/embedthis/goahead/releases/tag/v5.0.1	Release Notes

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2019-19240), CISA KEV, FIRST EPSS (scores of 2026-09-30). This page is refreshed as NVD updates the record.