Post-login phishing via protocol-relative redirect URL
Published Dec 11, 2025 · Updated Dec 11, 2025
Open redirect in Miniflux 2.2.14 and earlier allows remote attackers to send users to attacker-controlled sites after normal login. The checkLogin handler accepts redirect_url whenever url.Parse reports a non-absolute URL, without rejecting a parsed host, so protocol-relative values pass validation. Exploitation requires a user to follow a crafted Miniflux login link and complete login; the resulting redirect supports phishing but does not directly expose Miniflux data.
Summary
What happened
Open redirect in Miniflux 2.2.14 and earlier allows remote attackers to send users to attacker-controlled sites after normal login. The checkLogin handler accepts redirect_url whenever url.Parse reports a non-absolute URL, without rejecting a parsed host, so protocol-relative values pass validation. Exploitation requires a user to follow a crafted Miniflux login link and complete login; the resulting redirect supports phishing but does not directly expose Miniflux data.
The record
- CVE
- CVE-2025-67713
- Published
- Dec 11, 2025
- Updated
- Dec 11, 2025
- Vendor
- Miniflux
- Product
- Miniflux 2
- Classifications
- CWE-601, CAPEC-178, T1566.002
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Dec 11, 2025CVE publishedPublication date reported by the CVE source.
- Dec 11, 2025Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=< 2.2.15
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
- Protocol-relative redirect_url proof of conceptproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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