CVE-2026-25149

Description

### Summary **Description** An Open Redirect (CWE-601) vulnerability in Qwik City's default request handler middleware allows a remote attacker to redirect users to arbitrary protocol-relative URLs. Successful exploitation permits attackers to craft convincing phishing links that appear to originate from the trusted domain but redirect the victim to an attacker-controlled site. This affects qwik-city before version 1.19.0. This has been patched in qwik-city version 1.19.0. ### Impact Qwik City automatically applies the `fixTrailingSlash` middleware to page routes to ensure URL consistency. This vulnerability impacts all Qwik City applications deployed to runtimes that have a catch-all path to match arbitrary domains and that do not automatically normalize URL paths (e.g. Bun). Exploitation allows an attacker to craft links that trigger a 301 redirect to arbitrary protocol-relative URLs. Browsers interpret this Location header as a protocol-relative URL, redirecting the user to attacker-controlled domains. This can enable phishing attacks and token theft among other common open redirect exploits. ### Patches This has been patched in qwik-city version 1.19.0. Users are strongly encouraged to update to the latest available release.

How to fix CVE-2026-25149

To remediate CVE-2026-25149, upgrade the affected package to a fixed version below.

• —upgrade to 1.19.0 or later

Is CVE-2026-25149 being exploited?

Low — EPSS is 0.0%, meaning exploitation activity has not been observed at scale.

Affected packages (1)

• from 0, < 1.19.0

CVSS scores

References (4)

• ADVISORYnvd.nist.gov/vuln/detail/CVE-2026-25149
• PATCHgithub.com/QwikDev/qwik
• WEBgithub.com/QwikDev/qwik/commit/9959eab30a3ad9cc03689eaa080fcfbc33df71ed
• WEBgithub.com/QwikDev/qwik/security/advisories/GHSA-92j7-wgmg-f32m