CVE-2026-54593

HIGHPre-NVD 8.18.1—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 8.1 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.4%, top 72% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, secondary
Elevated
8.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.1Exploit: Elevated riskExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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.

CVSS v3
8.1
EG Score
8.1(medium)
EG Risk
52(Track*)
EG Risk 52/100SSVC: Track*

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity81% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Watch closely — could escalate to Attend.
EPSS PROB
0%
EPSS %ILE
28%
KEV
Not listed

Published

July 28, 2026

Last Modified

July 30, 2026

Advisory Details (4)

Auto-updated Jul 28, 2026
🔬 Proof of concept available. Patch available. Sources: github_commit, github_pr, github.
github_commit Patch Available

commit d0ddc8084447 (pterodactyl/wings)

Patch available: pterodactyl/wings v1.12.2 (contains commit d0ddc8084447)

https://github.com/pterodactyl/wings/commit/d0ddc80844479302abdaf9654de3bacd511c0f5c
github Patch Available🟡 PoC Available

Improper JWT scoping allows subuser to upload files when not explicitly granted `file.create` permissions · Advisory · pterodactyl/panel · GitHub

https://github.com/pterodactyl/panel/security/advisories/GHSA-8r6w-3qq5-4p4r
github_pr Patch Available

Attach a scope(s) to JWTs created by the panel

Patch available: pterodactyl/panel v1.12.3 (PR #5636 merged 2026-05-23)

https://github.com/pterodactyl/panel/pull/5636
github_commit Patch Available

commit 7ffcd636310b (pterodactyl/panel)

Patch available: pterodactyl/panel v1.12.3 (contains commit 7ffcd636310b)

https://github.com/pterodactyl/panel/commit/7ffcd636310bb72b54bac3280d2a15e727feded7

Vendor Advisories for CVE-2026-54593(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Affected Packages

(2 across 2 ecosystems)
Go(1)
PackageVulnerable rangeFixed inDependents
github.com/pterodactyl/wings—1.12.2—
Packagist(1)
PackageVulnerable rangeFixed inDependents
pterodactyl/panelv0.1.0-beta ... v1.9.2 (121 versions)1.12.3—

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 12× in last 7d / 56× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-08-25 13:49 UTCEPSS rescore
  2. 2026-08-24 23:53 UTCEG score recompute
  3. 2026-08-24 10:46 UTCEG score recompute
  4. 2026-08-23 08:32 UTCEG score recompute
  5. 2026-08-23 00:19 UTCEPSS rescore
  6. 2026-08-22 06:19 UTCEG score recompute
  7. 2026-08-21 23:49 UTCEPSS rescore
  8. 2026-08-21 04:03 UTCEG score recompute
  9. 2026-08-20 22:55 UTCEPSS rescore
  10. 2026-08-20 01:44 UTCEG score recompute
  11. 2026-08-19 17:04 UTCEPSS rescore
  12. 2026-08-18 23:29 UTCEG score recompute
  13. 2026-08-18 13:48 UTCEPSS rescore
  14. 2026-08-17 21:14 UTCEG score recompute
  15. 2026-08-17 13:47 UTCEPSS rescore
  16. 2026-08-16 19:01 UTCEG score recompute
  17. 2026-08-16 14:56 UTCEPSS rescore
  18. 2026-08-16 05:44 UTCEG score recompute
  19. 2026-08-16 02:14 UTCEPSS rescore
  20. 2026-08-15 03:31 UTCEG score recompute
  21. 2026-08-15 01:30 UTCEPSS rescore
  22. 2026-08-14 01:17 UTCEG score recompute
  23. 2026-08-13 22:00 UTCEPSS rescore
  24. 2026-08-12 23:04 UTCEG score recompute
  25. 2026-08-12 13:51 UTCEPSS rescore
Show 31 more
  1. 2026-08-11 20:50 UTCEG score recompute
  2. 2026-08-11 07:43 UTCEG score recompute
  3. 2026-08-11 00:00 UTCEPSS rescore
  4. 2026-08-09 16:23 UTCEG score recompute
  5. 2026-08-09 13:46 UTCEPSS rescore
  6. 2026-08-09 03:17 UTCEG score recompute
  7. 2026-08-08 16:37 UTCEPSS rescore
  8. 2026-08-08 01:03 UTCEG score recompute
  9. 2026-08-06 22:50 UTCEG score recompute
  10. 2026-08-06 13:47 UTCEPSS rescore
  11. 2026-08-05 20:21 UTCEG score recompute
  12. 2026-08-05 19:17 UTCEPSS rescore
  13. 2026-08-04 18:05 UTCEG score recompute
  14. 2026-08-04 15:10 UTCEPSS rescore
  15. 2026-08-04 10:39 UTCEPSS rescore
  16. 2026-08-03 15:37 UTCEG score recompute
  17. 2026-08-03 10:36 UTCEPSS rescore
  18. 2026-08-02 13:24 UTCEG score recompute
  19. 2026-08-02 02:27 UTCEPSS rescore
  20. 2026-08-01 11:09 UTCEG score recompute
  21. 2026-08-01 04:16 UTCEPSS rescore
  22. 2026-07-30 19:44 UTCEG score recompute
  23. 2026-07-30 16:28 UTCEPSS rescore
  24. 2026-07-30 08:50 UTCEG score recompute
  25. 2026-07-30 01:30 UTCEPSS rescore
  26. 2026-07-29 06:34 UTCEG score recompute
  27. 2026-07-28 17:23 UTCEG score recompute
  28. 2026-07-28 16:56 UTCEG score recompute
  29. 2026-07-28 16:21 UTCEG score recompute
  30. 2026-07-28 16:14 UTCEG score recompute
  31. 2026-07-28 16:13 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-54593?
CVE-2026-54593 is a high vulnerability published on July 28, 2026. 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 serveruuid, useruuid, and unique_id claims without checking the token's intended purpose;…
When was CVE-2026-54593 disclosed?
CVE-2026-54593 was first published in the National Vulnerability Database on July 28, 2026, with the most recent update on July 30, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-54593 actively exploited?
CVE-2026-54593 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 71.6% of all scored CVEs.
What is the CVSS score of CVE-2026-54593?
CVE-2026-54593 has a CVSS v3 base score of 8.1 (NVD).
How do I remediate CVE-2026-54593?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-54593, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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