CVE-2026-18487
MediumCVSS 5.4Exploitation Probability (EPSS)
Low risk26th percentile - higher than 26% of all known CVEs
Summary
A flaw was found in Epiphany in how the browser reads web addresses, allowing attackers to fake the domain name shown in the address bar. Clicking a specially crafted link containing a colon (e.g., https://trusted.com:[email protected]/) displays the safe website (trusted.com) in the address bar but actually loads the attacker's website (attacker.com). This allows creating convincing phishing pages.
Risk Assessment
Users can be tricked into entering their credentials on a fake page, leading to identity theft or account compromise.
Recommendation
It is recommended to update the Epiphany browser to the latest version and educate users on recognizing suspicious links.
Other vulnerabilities in Epiphany
See all- CVE-2026-118599Medium
A file overwrite vulnerability exists in Epiphany when installing WebExtension packages from .xpi files. decompress_xpi_thread() used libarchive with archive_read_support_format_all(), allowing a TAR file named *.xpi to be extracted; a crafted hard-link target can cause an attacker-chosen existing user-writable file to be truncated and overwritten with attacker-controlled content and mode bits, without a warning dialog, when the user installs or opens the crafted .xpi.
- CVE-2026-118598Medium
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 set_permission(), types CLIPBOARD and WEBSITE_DATA_ACCESS are not stored, so control fell into an else-if branch that always set EPHY_PERMISSION_PERMIT for ACCESS_WEBCAM and ACCESS_MICROPHONE. A malicious site that obtains approval for clipboard or third-party storage access can afterwards use getUserMedia without a further camera/microphone prompt.
- CVE-2026-115683Medium
A race condition in Epiphany allows a malicious website to bypass the TLS/SSL certificate warning page. The 'tlsErrorPage' script message handler is registered immediately before loading the error page, leaving a brief window where the previously loaded untrusted origin can call postMessage and approve a certificate exception without user interaction.
Original NVD description (English source)
A flaw was found in Epiphany. An issue in how the browser reads web addresses allows attackers to fake the domain name shown in the address bar. If a user clicks a specially crafted link containing a colon (for example, [https://trusted.com:[email protected]/](https://trusted.com:[email protected]/)), the address bar and security menus will display the safe website (trusted.com) but it will actually load the attacker website (attacker.com) on the screen. This allows attackers to create convincing phishing pages to trick users into trusting a malicious site.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS