How severe is CVE-2025-53923?

CVE-2025-53923 has a CVSS 3.x base score of 8.2, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity low, and availability none.

Is CVE-2025-53923 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (27th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-53923?

CVE-2025-53923 affects Emlog. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-53923?

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-2025-53923 have an EU (EUVD) identifier?

Yes. CVE-2025-53923 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-21699.

When was CVE-2025-53923 published?

CVE-2025-53923 was published on 2025-07-16 and last updated on 2026-06-17.

CVE-2025-53923

CVE-2025-53923 is a high-severity vulnerability in Emlog with a CVSS 3.x base score of 8.2. 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: High (CVSS 3.x base score 8.2)
EPSS exploit prediction: 0% (27th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-21699
Weakness: CWE-79
Affected product: Emlog
Published: 2025-07-16
Last modified: 2026-06-17

Description

Emlog is an open source website building system. A cross-site scripting (XSS) vulnerability in emlog up to and including pro-2.5.17 allows remote attackers to inject arbitrary web script or HTML via the keyword parameter. Due to lack of sanitization it is possible to inject HTML/JS code into keyword parameter. If one persuades an user into clicking into prepared link it is possible to execute any JS code in admin's browser. As of time of publication, no known patched versions exist.

Frequently asked questions

What is CVE-2025-53923?: Emlog is an open source website building system. A cross-site scripting (XSS) vulnerability in emlog up to and including pro-2.5.17 allows remote attackers to inject arbitrary web script or HTML via the keyword parameter. Due to lack of sanitization it is possible to inject HTML/JS code into keyword parameter. If one persuades an user into clicking into prepared link it is possible to execute any JS code in admin's browser. As of time of publication, no known patched versions exist.
How severe is CVE-2025-53923?: CVE-2025-53923 has a CVSS 3.x base score of 8.2, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity low, and availability none.
Is CVE-2025-53923 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (27th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-53923?: CVE-2025-53923 affects Emlog. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-53923?: 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-2025-53923 have an EU (EUVD) identifier?: Yes. CVE-2025-53923 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-21699.
When was CVE-2025-53923 published?: CVE-2025-53923 was published on 2025-07-16 and last updated on 2026-06-17.

References

https://github.com/emlog/emlog/security/advisories/GHSA-vvx2-m94x-f54m

Affected products (1)

cpe:2.3:a:emlog:emlog:*:*:*:*:pro:*:*:*

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