CVE-2026-54593
Pterodactyl JWT misuse lets subusers upload arbitrary files to servers.
Is CVE-2026-54593 being exploited?
Not confirmed. CVE-2026-54593 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 0.36% probability of exploitation in the next 30 days.
How severe is CVE-2026-54593?
CVE-2026-54593 is rated High with a CVSS score of 8.1. 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-2026-54593?
Yes. A fix has been recorded for CVE-2026-54593. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-54593 affect?
CVE-2026-54593 affects Pterodactyl Panel < 1.12.3, Pterodactyl Wings < 1.12.2. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-54593?
Upgrade Panel to 1.12.3 and Wings to 1.12.2; revoke/rotate tokens and audit uploads.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Authenticated subuser can reuse non-file JWTs to write arbitrary files to a server, enabling persistence or possible remote code execution.
Immediate action required
- affected< 1.12.3
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.