How severe is CVE-2026-46725?

CVE-2026-46725 has a CVSS 4.0 base score of 9.2, rated critical severity.

Is CVE-2026-46725 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (81st percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2026-46725?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

Does CVE-2026-46725 have an EU (EUVD) identifier?

Yes. CVE-2026-46725 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-30865.

When was CVE-2026-46725 published?

CVE-2026-46725 was published on 2026-05-19 and last updated on 2026-06-17.

CVE-2026-46725

CVE-2026-46725 is a critical-severity vulnerability with a CVSS 4.0 base score of 9.2. 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-502.

Key facts

Severity: Critical (CVSS 4.0 base score 9.2)
EPSS exploit prediction: 2% (81st percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-30865
Weakness: CWE-502
Published: 2026-05-19
Last modified: 2026-06-17

Description

The extension passes an attacker-controlled cookie directly to PHP's unserialize() without safely processing the input. A remote, unauthenticated attacker can supply a crafted serialized payload to trigger PHP Object Injection, leading to Remote Code Execution on the TYPO3 server. Exploitation requires the content element to be configured with "Persistent Mode: Static" in the plugin settings.

Frequently asked questions

What is CVE-2026-46725?: The extension passes an attacker-controlled cookie directly to PHP's unserialize() without safely processing the input. A remote, unauthenticated attacker can supply a crafted serialized payload to trigger PHP Object Injection, leading to Remote Code Execution on the TYPO3 server. Exploitation requires the content element to be configured with "Persistent Mode: Static" in the plugin settings.
How severe is CVE-2026-46725?: CVE-2026-46725 has a CVSS 4.0 base score of 9.2, rated critical severity.
Is CVE-2026-46725 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (81st percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-46725?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2026-46725 have an EU (EUVD) identifier?: Yes. CVE-2026-46725 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-30865.
When was CVE-2026-46725 published?: CVE-2026-46725 was published on 2026-05-19 and last updated on 2026-06-17.

References

https://typo3.org/security/advisory/typo3-ext-sa-2026-013

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