CVE-2026-118598mediumCWE-863

CVE-2026-118598: medium-severity vulnerability in GNOME Epiphany

epiphany: clipboard/website-data permission prompt incorrectly grants camera and microphone access

Published · Updated

Follow this CVE+ Monitor Epiphany+ Monitor epiphany-browser

E-mail alert when it lands in KEV, gets a public PoC or its score goes up.

13Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 6.5epss 0.5%
A logic error in Epiphany's site permission handling can cause camera and microphone access to be granted when the user only approves a different permission. In src/ephy-window.c, set_permission() stores the user's Allow/Deny choice after a WebKit permission dialog. Types CLIPBOARD and WEBSITE_DATA_ACCESS are not stored by ephy_permission_is_stored_by_permissions_manager(), so control fell into an else-if that was written as: } else if (EPHY_PERMISSION_TYPE_ACCESS_WEBCAM_AND_MICROPHONE) { Because that expression is a non-zero enum constant, the branch always ran for those types and wrote EPHY_PERMISSION_PERMIT for both ACCESS_WEBCAM and ACCESS_MICROPHONE for the site origin. The user only saw a Clipboard or Website Data Access dialog. A malicious site that obtains approval for clipboard or third-party storage access can afterwards use getUserMedia without a further camera/microphone prompt, exposing audiovisual confidentiality. Requirements: the victim must visit a malicious page and click Allow on a clipboard or website-data-access prompt. Affected: Epiphany >= 45.0 (bug present at least through 51.x). Fixed: https://gitlab.gnome.org/GNOME/epiphany/-/merge_requests/2249 (commit 480c3648). Upstream: https://gitlab.gnome.org/GNOME/epiphany/-/work_items/2976 Reporter acknowledgment: Fernando Munoz
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
Affected products
GNOME · Epiphany
Related CVEs — GNOME Epiphany

In the same product, most dangerous first.

CVE-2026-18487MEDIUMEpiphany: address bar / host spoofing via userinfo in ephy_uri_get_decoded_host()EPSS 0.3%CVE-2026-115683MEDIUMepiphany: TLS certificate warning bypass via race in tlsErrorPage message handlerEPSS 0.2%CVE-2026-118599MEDIUMepiphany: TAR-based .xpi with hard links can overwrite user files during WebExtension installEPSS 0.2%