What is CVE-2025-25477?

CVE-2025-25477 is a high-severity vulnerability in Syspass, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 8.1/10. Published 2025-02-28.

How severe is CVE-2025-25477?

High severity. CVSS v3 base score is 8.1 out of 10.

Vulnerability in Syspass

CVE-2025-25477

A host header injection vulnerability in SysPass 3.2x allows an attacker to load malicious JS files from an arbitrary domain which would be executed in the victim's browser.

EPSS: 0.004 (33.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N.

Affected products

Syspass
N/a — versions n/a

Weakness classification (CWE)

CWE-74 — Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection)

References

cve@mitre.org (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2025-25477?: CVE-2025-25477 is a high-severity vulnerability in Syspass, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 8.1/10. Published 2025-02-28.
How severe is CVE-2025-25477?: High severity. CVSS v3 base score is 8.1 out of 10.