CVE-2026-52857 Wings: Maliciously or erroneously created parsed config files can cause wings process to OOM
Attackers can cause the Wings server to crash by submitting oversized configuration files, leading to memory exhaustion and denial of service.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-52857?
CVE-2026-52857 is a medium-severity denial of service vulnerability in pterodactyl wings, published on 31 Jul 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Wings is the server control plane for Pterodactyl, a free, open-source game server management panel. Prior to 1.13.0, unbounded json, yaml, and xml configuration-file parsers in parser.go can process an oversized non-file parser configuration file and exhaust Wings process memory. This issue is fixed in version 1.13.0.
Weakness: CWE-400
Which versions are affected by CVE-2026-52857?
3 open source packages ship an affected version, including github.com/pterodactyl/wings.
| Package | Affected | Fixed in |
|---|---|---|
github.com/pterodactyl/wings Go | All versions | 1.13.0 |
github.com/pterodactyl/wings Go | All versions | 1.13.0 |
github.com/pterodactyl/wings Go | All versions | 1.13.0 |
How do I fix CVE-2026-52857?
Upgrade github.com/pterodactyl/wings to 1.13.0 or later.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2026-52857 being exploited?
There is no known exploitation of CVE-2026-52857 in the wild and no public exploit code.
Sources
Also known as GHSA-q6hh-gp44-4hcm, GO-2026-6159.