CVE-2026-48007
Element Call reports full URLs of visited pages to analytics server
Description
Element Call is a native Matrix video conferencing application. Versions 0.5.17 through 0.19.3 report analytics data to a PostHog server, when configured to by a `posthog` key in config.json or by the `posthogApiHost` and `posthogApiKey` URL parameters. Several fields of this data (`$initial_person_info`, `$session_entry_url`, and `$current_url`) were found to contain the full URL of the user's visited page, including the fragment. Users of a standalone Element Call ‘SPA’ instance such as https://call.element.io may therefore have reported the full URLs of certain calls, including encryption passwords, to the configured PostHog server, potentially compromising the confidentiality of the calls to actors who could access both the PostHog analytics data and the encrypted media streams. The same issue is present in Element Call's embedded package, but in practice it does not impact applications using this package (including Element Web, Element Desktop, Element X iOS, and Element X Android) because they distribute encryption keys over Matrix rather than encoding a password in the URL. The issue is patched in Element Call 0.19.4. Some workarounds are available. Users may opt out of analytics in the 'Feedback' tab of Element Call's settings and create new links for future calls. Admins who host Element Call as a standalone application may disable PostHog analytics entirely by removing the `posthog` key from their deployment's config.json file.
INFO
Published Date :
Aug. 7, 2026, 8:16 p.m.
Last Modified :
Oct. 23, 2026, 8:10 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
Affected Products
The following products are affected by CVE-2026-48007
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 4.0 | HIGH | [email protected] |
Solution
- Update Element Call to version 0.19.4.
- Disable PostHog analytics by removing 'posthog' key.
- Opt out of analytics in Element Call settings.
- Create new links for future calls.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-48007.
| URL | Resource |
|---|---|
| https://github.com/element-hq/element-call/releases/tag/v0.19.4 | |
| https://github.com/element-hq/element-call/security/advisories/GHSA-6vhh-4xw6-h2h2 |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-48007 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-48007
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-48007 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-48007 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Translated by [email protected]
Oct. 23, 2026
Action Type Old Value New Value Added Translation Title: element-call de element-hq, Description: Element Call es una aplicación nativa de videoconferencia de Matrix. Las versiones 0.5.17 a 0.19.3 informan datos analíticos a un servidor PostHog, cuando se configuran mediante una clave “posthog” en config.json o mediante los parámetros URL “posthogApiHost” y “posthogApiKey”. Se encontró que varios campos de estos datos (“$initial_person_info”, “$session_entry_url” y “$current_url”) contenían la URL completa de la página visitada por el usuario, incluyendo el fragmento. Los usuarios de una instancia ‘SPA’ independiente de Element Call como HTTPS://call.element.io, por lo tanto, pueden haber informado las URL completas de ciertas llamadas, incluyendo contraseñas de cifrado, al servidor PostHog configurado, comprometiendo potencialmente la confidencialidad de las llamadas a actores que pudieran acceder tanto a los datos analíticos de PostHog como a los flujos de medios cifrados. El mismo problema está presente en el paquete incrustado de Element Call, pero en la práctica no impacta a las aplicaciones que usan este paquete (incluyendo Element Web, Element Desktop, Element X iOS y Element X Android) porque distribuyen claves de cifrado a través de Matrix en lugar de codificar una contraseña en la URL. El problema está parcheado en Element Call 0.19.4. Algunas soluciones provisionales están disponibles. Los usuarios pueden optar por no participar en el análisis en la pestaña ’Feedback’ de la configuración de Element Call y crear nuevos enlaces para futuras llamadas. Los administradores que alojan Element Call como una aplicación independiente pueden deshabilitar completamente el análisis de PostHog eliminando la clave “posthog” del archivo config.json de su implementación. -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Aug. 10, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2026-48007', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'no'}, {'technicalImpact': 'total'}], 'version': '2.0.3', 'timestamp': '2026-08-10T13:27:21.640131Z'} -
New CVE Received by [email protected]
Aug. 07, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'element-hq', 'product': 'element-call', 'versions': [{'status': 'affected', 'version': '>= 0.5.17, < 0.19.4'}]}] Added Description Element Call is a native Matrix video conferencing application. Versions 0.5.17 through 0.19.3 report analytics data to a PostHog server, when configured to by a `posthog` key in config.json or by the `posthogApiHost` and `posthogApiKey` URL parameters. Several fields of this data (`$initial_person_info`, `$session_entry_url`, and `$current_url`) were found to contain the full URL of the user's visited page, including the fragment. Users of a standalone Element Call ‘SPA’ instance such as https://call.element.io may therefore have reported the full URLs of certain calls, including encryption passwords, to the configured PostHog server, potentially compromising the confidentiality of the calls to actors who could access both the PostHog analytics data and the encrypted media streams. The same issue is present in Element Call's embedded package, but in practice it does not impact applications using this package (including Element Web, Element Desktop, Element X iOS, and Element X Android) because they distribute encryption keys over Matrix rather than encoding a password in the URL. The issue is patched in Element Call 0.19.4. Some workarounds are available. Users may opt out of analytics in the 'Feedback' tab of Element Call's settings and create new links for future calls. Admins who host Element Call as a standalone application may disable PostHog analytics entirely by removing the `posthog` key from their deployment's config.json file. Added CVSS V4.0 AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Added CWE CWE-200 Added Reference https://github.com/element-hq/element-call/releases/tag/v0.19.4 Added Reference https://github.com/element-hq/element-call/security/advisories/GHSA-6vhh-4xw6-h2h2