Browser script execution via forged Host header
Published Feb 27, 2025 · Updated Feb 28, 2025
Host header injection in SysPass 3.2.0 through 3.2.11 allows remote attackers to make victim browsers execute attacker-hosted JavaScript. The index-page response derives JavaScript resource URLs from an unvalidated Host request header, so a forged host redirects script loads to an arbitrary domain. No authentication is required to supply the header, but a victim must request the application through the attacker-selected host; the resulting code runs in that browser.
Summary
What happened
Host header injection in SysPass 3.2.0 through 3.2.11 allows remote attackers to make victim browsers execute attacker-hosted JavaScript. The index-page response derives JavaScript resource URLs from an unvalidated Host request header, so a forged host redirects script loads to an arbitrary domain. No authentication is required to supply the header, but a victim must request the application through the attacker-selected host; the resulting code runs in that browser.
The record
- CVE
- CVE-2025-25477
- Published
- Feb 27, 2025
- Updated
- Feb 28, 2025
- Vendor
- Unknown vendor
- Product
- Unknown product
- Classifications
- CWE-74, T1203
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Feb 27, 2025CVE publishedPublication date reported by the CVE source.
- Feb 28, 2025Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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What is affected?
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Published CVSS scores
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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
- Host-header injection proof of conceptproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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