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Fencer Vulns
high 7.5

CVE-2026-52856 json

Wings: Maliciously crafted packet during SFTP connection handshake causes denial of service

published 2026-07-31 3 mo ago modified 2026-10-23 16 d ago also GHSA-ghrq-5wpp-hxx5 , GO-2026-6156 , EUVD-2026-51569

cvss
7.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.6%
EPSS 0.6% chance of exploitation in 30 days, percentile 49%
public exploits
0
none known

Summary

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.

Patch / fix

  • go github.com/pterodactyl/wings 1.13.0
  • govulncheck-vulndb SLES for SAP applications 16.0, SLES 16.0 0.0.20260827T195228-160000.1.1

suse advisories SUSE-SU-2026:23625-1

  • govulncheck-vulndb openSUSE Leap 16.0 0.0.20260827T195228-160000.1.1

opensuse advisories openSUSE-SU-2026:21761-1

CISA SSVC

Exploitation
none
Automatable
yes
Technical impact
partial
Assessed
3 mo ago

Exploit prediction

0.61% chance of exploitation in the next 30 days, higher than 49% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
GitHub 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected packages

ecosystem package affected fixed in
go github.com/pterodactyl/wings
<1.13.0
1.13.0

Affected products

  • pterodactyl wings

Classification

Weakness
  • CWE-248 Uncaught Exception
  • CWE-617 Reachable Assertion
  • CWE-129 Improper Validation of Array Index
  • CWE-755 Improper Handling of Exceptional Conditions
  • CWE-20 Improper Input Validation
  • CWE-400 Uncontrolled Resource Consumption

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.