How severe is CVE-2025-48203?

CVE-2025-48203 has a CVSS 3.x base score of 6.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2025-48203 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.

How do I fix CVE-2025-48203?

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

Does CVE-2025-48203 have an EU (EUVD) identifier?

Yes. CVE-2025-48203 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-16027.

When was CVE-2025-48203 published?

CVE-2025-48203 was published on 2025-05-21 and last updated on 2026-06-17.

CVE-2025-48203

CVE-2025-48203 is a medium-severity vulnerability with a CVSS 3.x base score of 6.4. 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 6.4)
EPSS exploit prediction: 0% (9th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-16027
Weakness: CWE-79
Published: 2025-05-21
Last modified: 2026-06-17

Description

The cs_seo extension through 9.2.0 for TYPO3 allows XSS.

Frequently asked questions

What is CVE-2025-48203?: The cs_seo extension through 9.2.0 for TYPO3 allows XSS.
How severe is CVE-2025-48203?: CVE-2025-48203 has a CVSS 3.x base score of 6.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2025-48203 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.
How do I fix CVE-2025-48203?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-48203 have an EU (EUVD) identifier?: Yes. CVE-2025-48203 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-16027.
When was CVE-2025-48203 published?: CVE-2025-48203 was published on 2025-05-21 and last updated on 2026-06-17.

References

https://typo3.org/security/advisory/typo3-ext-sa-2025-005

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