How severe is CVE-2025-40730?

CVE-2025-40730 has a CVSS 4.0 base score of 4.8, rated medium severity.

Is CVE-2025-40730 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (20th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2025-40730?

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

Does CVE-2025-40730 have an EU (EUVD) identifier?

Yes. CVE-2025-40730 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-22897.

When was CVE-2025-40730 published?

CVE-2025-40730 was published on 2025-07-28 and last updated on 2026-06-17.

CVE-2025-40730

CVE-2025-40730 is a medium-severity vulnerability with a CVSS 4.0 base score of 4.8. 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 4.0 base score 4.8)
EPSS exploit prediction: 0% (20th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-22897
Weakness: CWE-79
Published: 2025-07-28
Last modified: 2026-06-17

Description

HTML injection in Vox Media's Chorus CMS. This vulnerability allows an attacker to execute JavaScript code in the victim's browser by sending them a malicious URL using the 'q' parameter in '/search'. This vulnerability can be exploited to steal sensitive user data, such as session cookies, or to perform actions on behalf of the user.

Frequently asked questions

What is CVE-2025-40730?: HTML injection in Vox Media's Chorus CMS. This vulnerability allows an attacker to execute JavaScript code in the victim's browser by sending them a malicious URL using the 'q' parameter in '/search'. This vulnerability can be exploited to steal sensitive user data, such as session cookies, or to perform actions on behalf of the user.
How severe is CVE-2025-40730?: CVE-2025-40730 has a CVSS 4.0 base score of 4.8, rated medium severity.
Is CVE-2025-40730 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (20th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2025-40730?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-40730 have an EU (EUVD) identifier?: Yes. CVE-2025-40730 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-22897.
When was CVE-2025-40730 published?: CVE-2025-40730 was published on 2025-07-28 and last updated on 2026-06-17.

References

https://www.incibe.es/en/incibe-cert/notices/aviso/html-injection-vox-medias-chorus-cms

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