Security readout for executives and security teams
Plain-English summary
CVE-2026-21696 affects Pterodactyl Wings, the server control plane for game servers. A low-privileged user can cause activity logs to be resent repeatedly to the panel. Over time, this can fill the panel database disk and disrupt service availability.
Executive priority
Prioritize remediation for production Pterodactyl environments because the issue can cause database disk exhaustion and service disruption. Upgrade scheduling should be prompt, especially for hosted or multi-user game server platforms.
Technical view
Wings versions 1.7.0 through before 1.12.0 fail to account for SQLite’s maximum parameter limit when deleting processed activity entries. If deletion exceeds the limit, no entries are removed. The cron job then reprocesses and reuploads the same activity data repeatedly, causing uncontrolled growth in the panel database.
Likely exposure
Organizations running Pterodactyl Wings versions >=1.7.0 and <1.12.0 are exposed, especially where low-privileged users can generate activity events. The impact is availability-focused, targeting panel database disk capacity rather than confidentiality or integrity.
Exploitation context
The advisory describes low-privileged network exploitation with no user interaction. The source bundle does not indicate public exploitation, and CISA KEV status is false. Treat as a practical denial-of-service risk where affected Wings deployments have active users generating activity logs.
Researcher notes
Root cause is unbounded batch deletion against SQLite variable limits, causing persistent retry of processed records. Sources identify affected versions and fixed version, but do not provide evidence of active exploitation or additional compensating controls beyond upgrading.
Mitigation direction
- Upgrade Pterodactyl Wings to version 1.12.0 or later.
- Review the GitHub security advisory for vendor guidance.
- Monitor panel database disk usage until upgrade is complete.
- Restrict unnecessary low-privileged access where operationally feasible.
Validation and detection
- Inventory Wings versions across all nodes.
- Confirm no deployment runs Wings >=1.7.0 and <1.12.0.
- Review panel database growth for repeated activity log records.
- Check Wings activity cron behavior after upgrading.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
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ATT&CK lookup starting points
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CWE-400: Exact CWE lookup
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Open ATT&CK lookupDatabase behavior lookup
The CVE wording references database injection or access, so collection and exfiltration review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2026-21696 mapping review
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Open ATT&CK lookup- Severity
- High
- CVSS
- 8.3 (4.0)
- Known Exploited
- No
- Published
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H——Primary CVE scoreVulnerability scoring details
Base CVSS 4.0 score
8.3HighVector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H
Source materials
- CVE List V5 sourceCVE List V5
- https://github.com/pterodactyl/wings/security/advisories/GHSA-2497-gp99-2m74CVE reference · x_refsource_CONFIRM
- https://github.com/pterodactyl/wings/blob/9ffbcdcdb1163da823cf9959b9602df9f7dcb54a/internal/cron/activity_cron.go#L81CVE reference · x_refsource_MISC
- https://github.com/pterodactyl/wings/blob/9ffbcdcdb1163da823cf9959b9602df9f7dcb54a/internal/cron/sftp_cron.go#L86CVE reference · x_refsource_MISC
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Uncontrolled Resource Consumption
Uncontrolled Resource Consumption represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.
