How severe is CVE-2025-59020?

CVE-2025-59020 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.

Is CVE-2025-59020 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (21st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-59020?

CVE-2025-59020 affects Typo3. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-59020?

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

Does CVE-2025-59020 have an EU (EUVD) identifier?

Yes. CVE-2025-59020 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-2090.

When was CVE-2025-59020 published?

CVE-2025-59020 was published on 2026-01-13 and last updated on 2026-06-17.

CVE-2025-59020

CVE-2025-59020 is a medium-severity vulnerability in Typo3 with a CVSS 3.x base score of 6.5. 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-863.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
CVSS v4: 5.3
EPSS exploit prediction: 0% (21st percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-2090
Weakness: CWE-863
Affected product: Typo3
Published: 2026-01-13
Last modified: 2026-06-17

Description

By exploiting the defVals parameter, attackers could bypass field‑level access checks during record creation in the TYPO3 backend. This gave them the ability to insert arbitrary data into prohibited exclude fields of a database table for which the user already has write permission for a reduced set of fields. This issue affects TYPO3 CMS versions 10.0.0-10.4.54, 11.0.0-11.5.48, 12.0.0-12.4.40, 13.0.0-13.4.22 and 14.0.0-14.0.1.

Frequently asked questions

What is CVE-2025-59020?: By exploiting the defVals parameter, attackers could bypass field‑level access checks during record creation in the TYPO3 backend. This gave them the ability to insert arbitrary data into prohibited exclude fields of a database table for which the user already has write permission for a reduced set of fields. This issue affects TYPO3 CMS versions 10.0.0-10.4.54, 11.0.0-11.5.48, 12.0.0-12.4.40, 13.0.0-13.4.22 and 14.0.0-14.0.1.
How severe is CVE-2025-59020?: CVE-2025-59020 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.
Is CVE-2025-59020 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (21st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-59020?: CVE-2025-59020 affects Typo3. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-59020?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-59020 have an EU (EUVD) identifier?: Yes. CVE-2025-59020 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-2090.
When was CVE-2025-59020 published?: CVE-2025-59020 was published on 2026-01-13 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:typo3:typo3:*:*:*:*:*:*:*:*

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