CVE-2025-9540
CVE-2025-9540 is a medium-severity vulnerability with a CVSS 3.x base score of 4.7. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.
Key facts
- Severity: Medium (CVSS 3.x base score 4.7)
- EPSS exploit prediction: 0% (12th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2025-30406
- Published:
- Last modified:
Description
The Markup Markdown WordPress plugin before 3.20.10 allows links to contain JavaScript which could allow users with the contributor role and above to perform Stored Cross-Site Scripting attacks.
Frequently asked questions
- What is CVE-2025-9540?
- The Markup Markdown WordPress plugin before 3.20.10 allows links to contain JavaScript which could allow users with the contributor role and above to perform Stored Cross-Site Scripting attacks.
- How severe is CVE-2025-9540?
- CVE-2025-9540 has a CVSS 3.x base score of 4.7, 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 low.
- Is CVE-2025-9540 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (12th percentile), an estimate of the probability of exploitation in the next 30 days.
- How do I fix CVE-2025-9540?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- Does CVE-2025-9540 have an EU (EUVD) identifier?
- Yes. CVE-2025-9540 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-30406.
- When was CVE-2025-9540 published?
- CVE-2025-9540 was published on 2025-09-22 and last updated on 2026-06-17.