How severe is CVE-2025-55296?

CVE-2025-55296 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2025-55296 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (53rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-55296?

CVE-2025-55296 affects Librenms. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-55296?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2025-55296 have an EU (EUVD) identifier?

Yes. CVE-2025-55296 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-25142.

When was CVE-2025-55296 published?

CVE-2025-55296 was published on 2025-08-18 and last updated on 2026-06-17.

CVE-2025-55296

CVE-2025-55296 is a medium-severity vulnerability in Librenms with a CVSS 3.x base score of 5.5. 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-79.

Key facts

Severity: Medium (CVSS 3.x base score 5.5)
EPSS exploit prediction: 1% (53rd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-25142
Weakness: CWE-79
Affected product: Librenms
Published: 2025-08-18
Last modified: 2026-06-17

Description

librenms is a community-based GPL-licensed network monitoring system. A stored Cross-Site Scripting (XSS) vulnerability exists in LibreNMS (<= 25.6.0) in the Alert Template creation feature. This allows a user with the admin role to inject malicious JavaScript, which will be executed when the template is rendered, potentially compromising other admin accounts. This vulnerability is fixed in 25.8.0.

Frequently asked questions

What is CVE-2025-55296?: librenms is a community-based GPL-licensed network monitoring system. A stored Cross-Site Scripting (XSS) vulnerability exists in LibreNMS (<= 25.6.0) in the Alert Template creation feature. This allows a user with the admin role to inject malicious JavaScript, which will be executed when the template is rendered, potentially compromising other admin accounts. This vulnerability is fixed in 25.8.0.
How severe is CVE-2025-55296?: CVE-2025-55296 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2025-55296 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (53rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-55296?: CVE-2025-55296 affects Librenms. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-55296?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-55296 have an EU (EUVD) identifier?: Yes. CVE-2025-55296 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-25142.
When was CVE-2025-55296 published?: CVE-2025-55296 was published on 2025-08-18 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:librenms:librenms:*:*:*:*:*:*:*:*

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