How severe is CVE-2025-63828?

CVE-2025-63828 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2025-63828 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (8th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-63828?

CVE-2025-63828 affects Backdropcms Backdrop Cms. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-63828?

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

Does CVE-2025-63828 have an EU (EUVD) identifier?

Yes. CVE-2025-63828 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-198053.

When was CVE-2025-63828 published?

CVE-2025-63828 was published on 2025-11-18 and last updated on 2026-06-17.

CVE-2025-63828

CVE-2025-63828 is a medium-severity vulnerability in Backdropcms Backdrop Cms with a CVSS 3.x base score of 6.1. 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-601.

Key facts

Severity: Medium (CVSS 3.x base score 6.1)
EPSS exploit prediction: 0% (8th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-198053
Weakness: CWE-601
Affected product: Backdropcms Backdrop Cms
Published: 2025-11-18
Last modified: 2026-06-17

Description

Host Header Injection vulnerability in Backdrop CMS 1.32.1 allows attackers to manipulate the Host header in password reset requests, leading to redirects to malicious domains and potential session hijacking via cookie injection.

Frequently asked questions

What is CVE-2025-63828?: Host Header Injection vulnerability in Backdrop CMS 1.32.1 allows attackers to manipulate the Host header in password reset requests, leading to redirects to malicious domains and potential session hijacking via cookie injection.
How severe is CVE-2025-63828?: CVE-2025-63828 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2025-63828 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (8th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-63828?: CVE-2025-63828 affects Backdropcms Backdrop Cms. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-63828?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-63828 have an EU (EUVD) identifier?: Yes. CVE-2025-63828 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-198053.
When was CVE-2025-63828 published?: CVE-2025-63828 was published on 2025-11-18 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:backdropcms:backdrop_cms:1.32.1:*:*:*:*:*:*:*

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