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No exploitation reportedFix availableAwaiting NVD analysis

CVE-2026-18487

No exploitation reported by the sources we read.

  • Published2026-08-06
  • WeaknessCWE-451

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

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:80@attacker.com/](https://trusted.com:80@attacker.com/)), 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.

Timeline

dates in UTC
  1. 2026-08-0622:16CVE publishedNVD

Versions per branch

Products declared by the CNA1 product

As fedora, the CNA that assigned this CVE, declared them in the CVE record; versions as written.

Source: the CNA record (CVE Program), © The MITRE Corporation,CVE Terms of UseCVE recordupdated 2026-08-06

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • epiphanyopenSUSE:Tumbleweedall versions · fixed in 51.1-1.1
  • epiphany-browserUbuntu:26.10all versions · no fixed version listed
  • epiphany-browserUbuntu:26.04:LTSall versions · no fixed version listed
  • epiphany-browserUbuntu:24.04:LTSall versions · no fixed version listed
  • epiphany-browserUbuntu:22.04:LTSall versions · no fixed version listed
  • epiphany-browserUbuntu:20.04:LTSall versions · no fixed version listed
  • epiphany-browserUbuntu:18.04:LTSall versions · no fixed version listed
  • epiphany-browserUbuntu:16.04:LTSall versions · no fixed version listed

3 more package ranges on OSV.dev

Vendor advisories

  • CVE-2026-18487 Red Hat Product Security

    epiphany: address bar / host spoofing via userinfo in ephy_uri_get_decoded_host()

Full record on NVD

Fix

No fix published by the sources we read yet. NVD record

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
Published
2026-08-06
Last Modified
2026-10-23
NVD status
Awaiting Analysis
GitHub Advisory
GHSA-5w7g-jqwx-788x

Frequently asked questions

What is CVE-2026-18487?

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:80@attacker.com/](https://trusted.com:80@attacker.com/)), 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.

Is CVE-2026-18487 actively exploited?

Active exploitation of CVE-2026-18487 has not been confirmed. Its EPSS score was 0.3% on 2026-11-08, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2026-18487?

CVE-2026-18487 has a CVSS v3 base score of 5.4 (MEDIUM severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N.

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