CVE-2026-11561
Expression language injection allows code execution in Apinizer prior to 2026.04.6.
Is CVE-2026-11561 being exploited?
Not confirmed. CVE-2026-11561 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 0.45% probability of exploitation in the next 30 days.
How severe is CVE-2026-11561?
CVE-2026-11561 is rated Critical with a CVSS score of 9.8. 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-2026-11561?
Yes. A fix has been recorded for CVE-2026-11561. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-11561 affect?
CVE-2026-11561 affects Apinizer 2026.04.0 - 2026.04.5. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-11561?
Patch to 2026.04.6+ immediately; verify deployment.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Arbitrary code execution via EL injection in Apinizer; attacker can run code with API access.
Immediate action required
- affected>= 2026.04.0 and < 2026.04.6
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.