Public proof of conceptFix available

CVE-2026-52856

Q: Is CVE-2026-52856 actively exploited?

Active exploitation of CVE-2026-52856 has not been confirmed. Its EPSS score was 0.6% on 2026-10-23, the estimated probability of exploitation in the next 30 days.

Q: What is the CVSS score for CVE-2026-52856?

CVE-2026-52856 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

A public proof of concept exists; no exploitation attested.

Published2026-07-31
Fixed in1.13.0
WeaknessCWE-129 · CWE-248 · CWE-617

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

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.

Timeline

dates in UTC

2026-07-3117:16CVE 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-2026-52856?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2026-52856?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
1.13	< 1.13.0	1.13.0	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 1.13.0

Detection

read 2026-10-23 19:25 UTC

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: 1 repository, unverifiedlisbickq/CVE-2026-52856-PoC

Sources

NVDCVE recordread 2026-10-23
CISA-ADPSSVC decisionnone2026-07-31
OpenCVESSVC decisionnone—
CNACVSS 3.17.5read 2026-10-23
CNAweakness (CWE)CWE-129, CWE-248, CWE-617, CWE-755read 2026-10-23
FIRST EPSSEPSS score0.6 %2026-10-23
PoC-in-GitHubproof of concept1read 2026-10-23
OSVaffected packages—

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published: 2026-07-31
Last Modified: 2026-09-10
NVD status: Deferred

Frequently asked questions

What is CVE-2026-52856?

Is CVE-2026-52856 actively exploited?

Active exploitation of CVE-2026-52856 has not been confirmed. Its EPSS score was 0.6% on 2026-10-23, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2026-52856?

CVE-2026-52856 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

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Surveillance reads the versions in your stack — a domain, a lockfile or a list — checks each CVE against the ranges its sources publish, and alerts you when one you run is exploited or enters CISA KEV. A version it cannot read stays « version not verified ».

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