How severe is CVE-2025-25063?

CVE-2025-25063 has a CVSS 3.x base score of 4.4, rated medium severity. It is exploitable over network with high attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2025-25063 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (9th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-25063?

CVE-2025-25063 affects Backdropcms Backdrop Cms. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-25063?

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

Does CVE-2025-25063 have an EU (EUVD) identifier?

Yes. CVE-2025-25063 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-4005.

When was CVE-2025-25063 published?

CVE-2025-25063 was published on 2025-02-03 and last updated on 2026-06-17.

CVE-2025-25063

CVE-2025-25063 is a medium-severity vulnerability in Backdropcms Backdrop Cms with a CVSS 3.x base score of 4.4. 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 4.4)
EPSS exploit prediction: 0% (9th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-4005
Weakness: CWE-79
Affected product: Backdropcms Backdrop Cms
Published: 2025-02-03
Last modified: 2026-06-17

Description

An XSS issue was discovered in Backdrop CMS 1.28.x before 1.28.5 and 1.29.x before 1.29.3. It does not sufficiently validate uploaded SVG images to ensure they do not contain potentially dangerous SVG tags. SVG images can contain clickable links and executable scripting, and using a crafted SVG, it is possible to execute scripting in the browser when an SVG image is viewed. This issue is mitigated by the attacker needing to be able to upload SVG images, and that Backdrop embeds all uploaded SVG images within <img> tags, which prevents scripting from executing. The SVG must be viewed directly by its URL in order to run any embedded scripting.

Frequently asked questions

What is CVE-2025-25063?: An XSS issue was discovered in Backdrop CMS 1.28.x before 1.28.5 and 1.29.x before 1.29.3. It does not sufficiently validate uploaded SVG images to ensure they do not contain potentially dangerous SVG tags. SVG images can contain clickable links and executable scripting, and using a crafted SVG, it is possible to execute scripting in the browser when an SVG image is viewed. This issue is mitigated by the attacker needing to be able to upload SVG images, and that Backdrop embeds all uploaded SVG images within <img> tags, which prevents scripting from executing. The SVG must be viewed directly by its URL in order to run any embedded scripting.
How severe is CVE-2025-25063?: CVE-2025-25063 has a CVSS 3.x base score of 4.4, rated medium severity. It is exploitable over network with high attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2025-25063 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (9th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-25063?: CVE-2025-25063 affects Backdropcms Backdrop Cms. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-25063?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-25063 have an EU (EUVD) identifier?: Yes. CVE-2025-25063 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-4005.
When was CVE-2025-25063 published?: CVE-2025-25063 was published on 2025-02-03 and last updated on 2026-06-17.

References

https://backdropcms.org/security/backdrop-sa-core-2025-002

Affected products (1)

cpe:2.3:a:backdropcms:backdrop_cms:*:*:*:*:*:*:*:*

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