How severe is CVE-2025-25477?

CVE-2025-25477 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability none.

Is CVE-2025-25477 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (31st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-25477?

CVE-2025-25477 affects Syspass. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-25477?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2025-25477 have an EU (EUVD) identifier?

Yes. CVE-2025-25477 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-5488.

When was CVE-2025-25477 published?

CVE-2025-25477 was published on 2025-02-28 and last updated on 2026-06-17.

CVE-2025-25477

CVE-2025-25477 is a high-severity vulnerability in Syspass with a CVSS 3.x base score of 8.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-74.

Key facts

Severity: High (CVSS 3.x base score 8.1)
EPSS exploit prediction: 0% (31st percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-5488
Weakness: CWE-74
Affected product: Syspass
Published: 2025-02-28
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is 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.
How severe is CVE-2025-25477?: CVE-2025-25477 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability none.
Is CVE-2025-25477 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (31st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-25477?: CVE-2025-25477 affects Syspass. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-25477?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2025-25477 have an EU (EUVD) identifier?: Yes. CVE-2025-25477 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-5488.
When was CVE-2025-25477 published?: CVE-2025-25477 was published on 2025-02-28 and last updated on 2026-06-17.

References

https://github.com/sysentr0py/CVEs/tree/main/CVE-2025-25477

Affected products (1)

cpe:2.3:a:syspass:syspass:*:*:*:*:*:*:*:*

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