Affects widely-used Adobe ColdFusion; risk of arbitrary code execution via crafted file.
CVE-2026-27306
ColdFusion input validation flaw enables code execution via crafted file (user interaction).
Is CVE-2026-27306 being exploited?
Not confirmed. CVE-2026-27306 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 0.30% probability of exploitation in the next 30 days.
How severe is CVE-2026-27306?
CVE-2026-27306 is rated High with a CVSS score of 8.4. 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-2026-27306?
Yes. A fix has been recorded for CVE-2026-27306. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-27306 affect?
CVE-2026-27306 affects Adobe ColdFusion (versions 2023.18, 2025.6 and earlier). Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-27306?
Patch when available; enforce least privilege; block malicious files.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Arbitrary code execution in the current user context via a crafted file; requires user interaction and elevated attacker privileges.
Immediate action required
- affected<= 18
- affected<= 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.