Public proof of conceptFix available

CVE-2026-54593

Q: Is CVE-2026-54593 actively exploited?

A proof-of-concept exploit exists for CVE-2026-54593, but active exploitation has not been confirmed at this time.

Q: What is the CVSS score for CVE-2026-54593?

CVE-2026-54593 has a CVSS v3 base score of 8.1 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H.

A public proof of concept exists; no exploitation attested.

Published2026-07-28
Fixed in1.12.2
WeaknessCWE-1259 · CWE-1270

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

Pterodactyl is a free, open-source game server management panel. Prior to Panel version 1.12.3 and Wings version 1.12.2, the Wings /upload/file endpoint accepted any valid panel-signed JWT that contained server_uuid, user_uuid, and unique_id claims without checking the token's intended purpose; because the Panel issues JWTs carrying those same claims for lower-privilege operations such as WebSocket authentication and file-download links, an authenticated subuser could reuse one of those tokens (for example a WebSocket token obtained with only the websocket.connect permission) by replaying it against /upload/file to write arbitrary files to the same server, despite never being granted the file.create permission. This issue is fixed in Panel version 1.12.3 and Wings version 1.12.2.

Timeline

dates in UTC

2026-07-2816:19CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 21:37 UTC

Indicators tagged with this CVE, per day0 indicators over 7 days

Block these indicators

Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2026-54593?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2026-54593?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

OSV

pterodactyl/wings

Branch	Affected	Fixed in	Source
1.12	< 1.12.2	1.12.2	OSV

pterodactyl/panel

Branch	Affected	Fixed in	Source
1.12	< 1.12.3	1.12.3	OSV

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

Update pterodactyl/wings to 1.12.2

Detection

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: none listed

Sources

NVDCVE recordread 2026-10-23
CISA-ADPSSVC decisionpoc2026-07-28
OpenCVESSVC decisionpoc—
CNACVSS 3.18.1read 2026-10-23
CNAweakness (CWE)CWE-1259, CWE-1270read 2026-10-23
FIRST EPSSEPSS score0.7 %2026-10-23
OSVaffected packages—

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
Published: 2026-07-28
Last Modified: 2026-07-30
NVD status: Deferred

Frequently asked questions

What is CVE-2026-54593?

Is CVE-2026-54593 actively exploited?

A proof-of-concept exploit exists for CVE-2026-54593, but active exploitation has not been confirmed at this time.

What is the CVSS score for CVE-2026-54593?

CVE-2026-54593 has a CVSS v3 base score of 8.1 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H.

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