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Products by Embedthis Sorted by Most Security Vulnerabilities since 2018

Embedthis Goahead13 vulnerabilities

Embedthis Appweb5 vulnerabilities

Known Exploited Embedthis Vulnerabilities

The following Embedthis vulnerabilities have been marked by CISA as Known to be Exploited by threat actors.

Title	Description	Added
Embedthis GoAhead Remote Code Execution Vulnerability	Embedthis GoAhead before 3.6.5 allows remote code execution if CGI is enabled and a CGI program is dynamically linked. CVE-2017-17562 Exploit Probability: 94.3%	December 10, 2021

The vulnerability CVE-2017-17562: Embedthis GoAhead Remote Code Execution Vulnerability is in the top 1% of the currently known exploitable vulnerabilities.

By the Year

In 2026 there have been 0 vulnerabilities in Embedthis. Last year, in 2025 Embedthis had 1 security vulnerability published. Right now, Embedthis is on track to have less security vulnerabilities in 2026 than it did last year.

Year	Vulnerabilities	Average Score
2026	0	0.00
2025	1	0.00
2024	0	0.00
2023	0	0.00
2022	2	9.80
2021	1	9.80
2020	2	8.15
2019	5	8.63
2018	3	8.10

It may take a day or so for new Embedthis vulnerabilities to show up in the stats or in the list of recent security vulnerabilities. Additionally vulnerabilities may be tagged under a different product or component name.

Recent Embedthis Security Vulnerabilities

CVE	Date	Vulnerability	Products
CVE-2023-53155	Jul 25, 2025	EmbedThis GoAhead 2.5 goform/formTest XSS via name parameter goform/formTest in EmbedThis GoAhead 2.5 allows HTML injection via the name parameter.	Goahead
CVE-2021-41615	Aug 08, 2022	Nonce Entropy Weakness in GoAhead WebServer 2.1.8 (websda.c) websda.c in GoAhead WebServer 2.1.8 has insufficient nonce entropy because the nonce calculation relies on the hardcoded onceuponatimeinparadise value, which does not follow the secret-data guideline for HTTP Digest Access Authentication in RFC 7616 section 3.3 (or RFC 2617 section 3.2.1). NOTE: 2.1.8 is a version from 2003; however, the affected websda.c code appears in multiple derivative works that may be used in 2021. Recent GoAhead software is unaffected.	Goahead
CVE-2021-43298	Jan 25, 2022	The code that performs password matching when using 'Basic' HTTP authentication does not use a constant-time memcmp and has no rate-limiting The code that performs password matching when using 'Basic' HTTP authentication does not use a constant-time memcmp and has no rate-limiting. This means that an unauthenticated network attacker can brute-force the HTTP basic password, byte-by-byte, by recording the webserver's response time until the unauthorized (401) response.	Goahead
CVE-2021-42342	Oct 14, 2021	An issue was discovered in GoAhead 4.x and 5.x before 5.1.5 An issue was discovered in GoAhead 4.x and 5.x before 5.1.5. In the file upload filter, user form variables can be passed to CGI scripts without being prefixed with the CGI prefix. This permits tunneling untrusted environment variables into vulnerable CGI scripts.	Goahead
CVE-2020-15688	Jul 23, 2020	The HTTP Digest Authentication in the GoAhead web server before 5.1.2 does not completely protect against replay attacks The HTTP Digest Authentication in the GoAhead web server before 5.1.2 does not completely protect against replay attacks. This allows an unauthenticated remote attacker to bypass authentication via capture-replay if TLS is not used to protect the underlying communication channel.	Goahead
CVE-2020-15689	Jul 13, 2020	Appweb before 7.2.2 and 8.x before 8.1.0, when built with CGI support, mishandles an HTTP request with a Range header Appweb before 7.2.2 and 8.x before 8.1.0, when built with CGI support, mishandles an HTTP request with a Range header that lacks an exact range. This may result in a NULL pointer dereference and cause a denial of service.	Appweb
CVE-2019-5096	Dec 03, 2019	An exploitable code execution vulnerability exists in the processing of multi-part/form-data requests within the base GoAhead web server application in versions v5.0.1 An exploitable code execution vulnerability exists in the processing of multi-part/form-data requests within the base GoAhead web server application in versions v5.0.1, v.4.1.1 and v3.6.5. A specially crafted HTTP request can lead to a use-after-free condition during the processing of this request that can be used to corrupt heap structures that could lead to full code execution. The request can be unauthenticated in the form of GET or POST requests, and does not require the requested resource to exist on the server.	Goahead
CVE-2019-5097	Dec 03, 2019	A denial-of-service vulnerability exists in the processing of multi-part/form-data requests in the base GoAhead web server application in versions v5.0.1 A denial-of-service vulnerability exists in the processing of multi-part/form-data requests in the base GoAhead web server application in versions v5.0.1, v.4.1.1 and v3.6.5. A specially crafted HTTP request can lead to an infinite loop in the process. The request can be unauthenticated in the form of GET or POST requests and does not require the requested resource to exist on the server.	Goahead
CVE-2019-19240	Nov 22, 2019	Embedthis GoAhead before 5.0.1 mishandles redirected HTTP requests with a large Host header 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.	Goahead
CVE-2019-16645	Sep 20, 2019	An issue was discovered in Embedthis GoAhead 2.5.0 An issue was discovered in Embedthis GoAhead 2.5.0. Certain pages (such as goform/login and config/log_off_page.htm) create links containing a hostname obtained from an arbitrary HTTP Host header sent by an attacker. This could potentially be used in a phishing attack.	Goahead