CVE-2026-48007: @element hq/element call embedded Element Call Reports Full URLs Vulnerability
HIGHCVE-2026-48007 is a HIGH element call reports full urls vulnerability (CWE-200: Exposure of Sensitive Information to an Unauthorized Actor) affecting @element hq/element call embedded libraries in the npm ecosystem. The issue involves element call reports full urls of visited pages to analytics server. Remediation is available by upgrading affected packages to version 0.19.4.
CVE-2026-48007 at a Glance
How to Fix CVE-2026-48007
To remediate this vulnerability, upgrade all affected @element hq/element call embedded dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.
npm install @element-hq/element-call-embedded@0.19.4Run the following command in your project directory to verify that all resolved dependencies use the patched release:
npm ls @element-hq/element-call-embeddedHow to Check if You Are Affected
To determine whether your Node.js application is affected by CVE-2026-48007, inspect your project dependencies using npm:
npm ls @element-hq/element-call-embeddedAnalyze the terminal output to locate any version of @element hq/element call embedded in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 0.19.4), your application is affected.
Note: The npm ls @element-hq/element-call-embedded command inspects dependencies declared in your package.json and lockfile; it does not perform automated runtime dynamic scanning.
Technical Details
Vulnerability Mechanism & Technical Analysis
This vulnerability is classified under CWE-200: Exposure of Sensitive Information to an Unauthorized Actor, where the product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. In @element hq/element call embedded, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.
Source Advisory Statement
CVE-2026-48007 Affected @element hq/element call embedded Versions
1 component(s)| Product / Package | Ecosystem | Affected Versions | Fixed Version |
|---|---|---|---|
|
@element-hq/element-call-embedded
|
npm |
≥ 0.5.17
< 0.19.4
|
0.19.4
|
References
Frequently Asked Questions
What is CVE-2026-48007?
Which @element hq/element call embedded versions are affected?
What version fixes CVE-2026-48007?
Is @element-hq/element-call-embedded affected?
What CWE is associated with CVE-2026-48007?
How can I check npm dependencies for CVE-2026-48007?
Machine-readable OSV JSON
OSV v1.5 Schema
{
"schema_version" : "1.4.0",
"id" : "GHSA-6vhh-4xw6-h2h2",
"modified" : "2026-06-11T13:26:17Z",
"published" : "2026-06-11T13:26:17Z",
"aliases" : [ "CVE-2026-48007" ],
"summary" : "Element Call reports full URLs of visited pages to analytics server",
"details" : "### Impact\n\nElement Call 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.\n\nUsers 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.\n\nThe 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.\n\n### Patches\n\nPatched in Element Call 0.19.4.\n\n### Workarounds\n\nUsers may opt out of analytics in the 'Feedback' tab of Element Call's settings and create new links for future calls.\n\nAdmins 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.\n\n### For more information\n\nIf there are any questions or comments about this advisory, please send an email to [security at element.io](mailto:security@element.io).",
"severity" : [ {
"type" : "CVSS_V4",
"score" : "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N"
} ],
"affected" : [ {
"package" : {
"ecosystem" : "npm",
"name" : "@element-hq/element-call-embedded"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "0.5.17"
}, {
"fixed" : "0.19.4"
} ]
} ],
"database_specific" : {
"last_known_affected_version_range" : "<= 0.19.3"
}
} ],
"references" : [ {
"type" : "WEB",
"url" : "https://github.com/element-hq/element-call/security/advisories/GHSA-6vhh-4xw6-h2h2"
}, {
"type" : "PACKAGE",
"url" : "https://github.com/element-hq/element-call"
}, {
"type" : "WEB",
"url" : "https://github.com/element-hq/element-call/releases/tag/v0.19.4"
} ],
"database_specific" : {
"cwe_ids" : [ "CWE-200" ],
"severity" : "HIGH",
"github_reviewed" : true,
"github_reviewed_at" : "2026-06-11T13:26:17Z",
"nvd_published_at" : null
}
}