Quick answers
- Is This vulnerability exploited in the wild?
- No. Junglewise Threat Intelligence has no report of This vulnerability being exploited in the wild.
- How severe is This vulnerability?
- Medium severity, with a CVSS score of 5, published 26 June 2026.
- Which products and versions are affected?
- github.com/pterodactyl/wings (Go) >= 1.11.9, < 1.12.2; Pterodactyl Wings >= 1.11.9, < 1.12.2.
- Is there a fix for This vulnerability?
- A patch was published on 2026-06-26: Fix released in version 1.12.2 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is This vulnerability attacked?
- It is attacked over the network, in a software library.
- Am I affected?
- Check whether you run github.com/pterodactyl/wings (Go) or Pterodactyl Wings at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
A vulnerability exists in the `fchmodat` implementation within `wings/internal/ufs/fs_unix.go` of Pterodactyl Wings. The function calls the underlying Unix `fchmodat` system call without the `AT_SYMLINK_NOFOLLOW` flag and fails to validate if the target path is a symbolic link. An attacker with low-privileged network access to a managed server can create a symlink pointing to a file on the host filesystem and execute a chmod operation to change that host file's permissions. This bypasses container isolation (Scope: Changed) to impact the integrity of the host. The issue is patched in version 1.12.2.
Affected products
- Pterodactyl Wings >= 1.11.9, < 1.12.2
Timeline
- 2026-05-23: disclosed: Reported by Vz0n
- 2026-06-26: advisory: GitHub Advisory published
- 2026-06-26: patched: Fix released in version 1.12.2