CVE-2026-52856

HIGHPre-NVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 7.5 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.3%, top 74% 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
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.5Exploit: None knownExposed: 0

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

Wings is the server control plane for Pterodactyl, a free, open-source game server management panel. Prior to 1.13.0, a malformed packet received during the SFTP connection handshake causes a Go panic. This issue is fixed in version 1.13.0.

CVSS v3
7.5
EG Score
7.5(medium)
EG Risk
49(Track)
EG Risk 49/100SSVC: 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
Severity75% × 45%
Exploitation0% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
26%
KEV
Not listed

Published

July 31, 2026

Last Modified

July 31, 2026

Advisory Details (3)

Auto-updated Jul 31, 2026
Patch available. Sources: github_commit, github_release, github.
github_release Patch Available

v1.13.0

Patch available: pterodactyl/wings v1.13.0

https://github.com/pterodactyl/wings/releases/tag/v1.13.0
github_commit Patch Available

commit 8e49c7c0eda8 (pterodactyl/wings)

Patch available: pterodactyl/wings v1.13.0 (contains commit 8e49c7c0eda8)

https://github.com/pterodactyl/wings/commit/8e49c7c0eda815d3ada171831876a1c14c493026
github Patch Available

Maliciously crafted packet during SFTP connection handshake causes denial of service · Advisory · pterodactyl/wings · GitHub

https://github.com/pterodactyl/wings/security/advisories/GHSA-ghrq-5wpp-hxx5

Vendor Advisories for CVE-2026-52856(1)

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

Affected Packages

(1 across 1 ecosystem)
Go(1)
PackageVulnerable rangeFixed inDependents
github.com/pterodactyl/wings—1.13.0—

Weakness Classification(4)

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

Data Freshness Timeline

(refreshed 14× in last 7d / 40× 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. 2026-08-20 00:11 UTCEG score recompute
  2. 2026-08-19 17:04 UTCEPSS rescore
  3. 2026-08-18 21:54 UTCEG score recompute
  4. 2026-08-18 13:48 UTCEPSS rescore
  5. 2026-08-17 19:39 UTCEG score recompute
  6. 2026-08-17 13:47 UTCEPSS rescore
  7. 2026-08-16 16:22 UTCEG score recompute
  8. 2026-08-16 14:56 UTCEPSS rescore
  9. 2026-08-16 03:15 UTCEG score recompute
  10. 2026-08-16 02:14 UTCEPSS rescore
  11. 2026-08-15 14:08 UTCEG score recompute
  12. 2026-08-15 01:30 UTCEPSS rescore
  13. 2026-08-13 22:47 UTCEG score recompute
  14. 2026-08-13 22:00 UTCEPSS rescore
  15. 2026-08-12 20:31 UTCEG score recompute
  16. 2026-08-12 13:51 UTCEPSS rescore
  17. 2026-08-11 18:17 UTCEG score recompute
  18. 2026-08-11 05:02 UTCEG score recompute
  19. 2026-08-11 00:00 UTCEPSS rescore
  20. 2026-08-10 02:30 UTCEG score recompute
  21. 2026-08-09 13:46 UTCEPSS rescore
  22. 2026-08-09 00:16 UTCEG score recompute
  23. 2026-08-08 16:37 UTCEPSS rescore
  24. 2026-08-07 22:01 UTCEG score recompute
  25. 2026-08-06 19:47 UTCEG score recompute
Show 15 more
  1. 2026-08-06 13:47 UTCEPSS rescore
  2. 2026-08-06 06:40 UTCEG score recompute
  3. 2026-08-05 19:17 UTCEPSS rescore
  4. 2026-08-04 15:16 UTCEG score recompute
  5. 2026-08-04 15:10 UTCEPSS rescore
  6. 2026-08-04 10:39 UTCEPSS rescore
  7. 2026-08-03 13:02 UTCEG score recompute
  8. 2026-08-03 10:36 UTCEPSS rescore
  9. 2026-08-02 10:47 UTCEG score recompute
  10. 2026-08-02 02:27 UTCEPSS rescore
  11. 2026-07-31 19:25 UTCEG score recompute
  12. 2026-07-31 19:08 UTCEG score recompute
  13. 2026-07-31 17:33 UTCEG score recompute
  14. 2026-07-31 17:00 UTCEG score recompute
  15. 2026-07-31 16:58 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-52856?
CVE-2026-52856 is a high vulnerability published on July 31, 2026. Wings is the server control plane for Pterodactyl, a free, open-source game server management panel. Prior to 1.13.0, a malformed packet received during the SFTP connection handshake causes a Go panic. This issue is fixed in version 1.13.0.
When was CVE-2026-52856 disclosed?
CVE-2026-52856 was first published in the National Vulnerability Database on July 31, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-52856 actively exploited?
CVE-2026-52856 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 73.5% of all scored CVEs.
What is the CVSS score of CVE-2026-52856?
CVE-2026-52856 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-52856?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-52856, 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

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-52856

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