CVE-2026-72557
Authenticated file upload leads to RCE via PHP webshells in Cockpit CMS 2.6.0.
Is CVE-2026-72557 being exploited?
Not confirmed. CVE-2026-72557 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 0.33% probability of exploitation in the next 30 days.
How severe is CVE-2026-72557?
CVE-2026-72557 is rated High with a CVSS score of 8.8. 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-2026-72557?
Not known from our data. No patch reference has been recorded for CVE-2026-72557, which is not the same as no patch existing — a fix may have shipped without a tagged reference, or after this record was written. The vendor advisory is the only authority on whether a fix exists, and mitigations may be available regardless.
What does CVE-2026-72557 affect?
CVE-2026-72557 affects Cockpit CMS 2.6.0. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-72557?
Disable/limit uploads, set allowed_uploads to safe extensions, move uploads out of webroot, revoke suspicious accounts, apply vendor patch when released
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Authenticated users can upload PHP webshells to a web-accessible asset directory and execute arbitrary OS commands (remote code execution).
Immediate action required
- affected<= 2.6.0
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.