Remote code execution in a widely used Drupal module (Webform) enabling full site compromise; likely to impact many public sites and orgs.
CVE-2026-96355
Drupal Webform template injection enabling remote code execution.
Is CVE-2026-96355 being exploited?
Not confirmed. CVE-2026-96355 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 0.42% probability of exploitation in the next 30 days.
How severe is CVE-2026-96355?
CVE-2026-96355 is rated Critical with a CVSS score of 9.1. 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-2026-96355?
Yes. A fix has been recorded for CVE-2026-96355. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-96355 affect?
CVE-2026-96355 affects Drupal Webform module versions 0.0.0-6.2.12, Drupal Webform module versions 6.3.0-6.3.1. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-96355?
Apply the Webform security update immediately or disable/remove the module.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Remote code execution via template engine injection; attacker can run arbitrary code, compromise site, access data and pivot internally.
Immediate action required
- affected< 6.2.12
- affected>= 6.3.0 and < 6.3.1
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.