CVE-2026-115683: GNOME Epiphany

epiphany: TLS certificate warning bypass via race in tlsErrorPage message handler

CVSS 6.8 MediumEPSS 0.0022 · 12th percentile

Published by the CVE Program (CNA: fedora) at 30 Oct 2026, 13:33 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

Affected products, as the CNA wrote them
Vendor	Product	Versions
GNOME	Epiphany Package name: epiphany https://gitlab.gnome.org/GNOME/epiphany	affected before 51.1 semver Other versions: affected

Identifiers

CVE-2026-115683

CNA

fedora

Weakness (CWE)

CWE-367

Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

Severity and exploitation

Score	Rating	CVSS	Vector	Source
6.8	Medium	3.1	CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N	CNA (fedora)

CISA KEV Not listed.
EPSS 0.0022, the 12th percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

30 Oct 2026, 13:33 UTC Confirmed by the CVE List
30 Oct 2026, 14:16 UTC Confirmed by NVD

Sources

References from the CNA

access.redhat.com/security/cve/CVE-2026-115683 vdb-entryredhat
bugzilla.redhat.com/show_bug.cgi?id=2560012 issue-trackingredhat
gitlab.gnome.org/GNOME/epiphany/-/work_items/2978
gitlab.gnome.org/GNOME/epiphany/-/merge_requests/2245
beford.net/poc/ssl_poc.html

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.