CVE-2026-46725
Unauthenticated RCE in TYPO3 via cookie to PHP unserialize
Is CVE-2026-46725 being exploited?
Not confirmed. CVE-2026-46725 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 2.6% probability of exploitation in the next 30 days.
How severe is CVE-2026-46725?
CVE-2026-46725 is rated Critical with a CVSS score of 9.2. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-46725?
Yes. A fix has been recorded for CVE-2026-46725. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-46725 affect?
CVE-2026-46725 affects TYPO3 CMS, Vulnerable extension with Persistent Mode: Static. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-46725?
Patch/update when released; disable Static mode; rotate cookies
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Remote code execution via crafted cookie; attacker-controlled input triggers PHP Object Injection; requires Static mode in plugin.
Immediate action required
- affected>= 6.0.0 and < 6.0.1
- affected>= 5.0.0 and < 5.0.1
- affected>= 4.0.0 and < 4.0.2
- affected< 3.0.3
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.