How severe is CVE-2026-21696?

No CVSS score has been assigned to CVE-2026-21696 yet. Review the advisory details and affected package list to assess your exposure.

Which packages are affected by CVE-2026-21696?

CVE-2026-21696 affects the following packages: github.com/pterodactyl/wings (Go). Ecosystems affected: Go.

How do I fix CVE-2026-21696?

Update github.com/pterodactyl/wings to 1.12.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2026-21696 is resolved across your whole dependency graph.

How do I detect CVE-2026-21696 in my Go dependencies?

Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for github.com/pterodactyl/wings, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

How do I mitigate CVE-2026-21696 if there is no patch (or I can't update yet)?

Cap what an attacker can consume: apply request size, rate and timeout limits in front of the affected component, and run it with memory and CPU limits so exhaustion degrades one worker rather than the whole service.

Is CVE-2026-21696 actively exploited in the wild?

No public exploit code has been indexed for CVE-2026-21696 yet. This does not mean the vulnerability cannot be exploited — absence of public exploits does not imply safety. Apply the recommended fix and use O3 Security to monitor your exposure.

What is the EPSS score for CVE-2026-21696?

CVE-2026-21696 has an EPSS (Exploit Prediction Scoring System) score of 0.6%, placing it in the 46th percentile of all CVEs. EPSS is maintained by FIRST.org and estimates the probability that a vulnerability will be exploited in the wild within the next 30 days. This score indicates relatively lower exploitation probability, though the CVSS severity should still guide your patching priority.

What type of vulnerability is CVE-2026-21696?

CVE-2026-21696 is classified as Uncontrolled Resource Consumption (CWE-400), CWE-770 (CWE-770). These weakness types describe the underlying flaw category, which helps determine the potential impact and the right class of mitigation.

When was CVE-2026-21696 published, and has it been updated?

CVE-2026-21696 was published on January 19, 2026 and was last updated on October 28, 2026. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

🐹 Go

Not in CISA KEV

CVE-2026-21696 — wings

Fix: pterodactyl/panel@09caa0d

CVE-2026-21696 is a Uncontrolled Resource Consumption vulnerability in github.com/pterodactyl/wings. A fix is available for github.com/pterodactyl/wings — see the affected versions and patch details below.

Endless reprocessing/reupload of activity log data due to SQLite max parameters limit not being considered

Also known asGHSA-2497-gp99-2m74GO-2026-4329

Published

Jan 19, 2026

Updated

Oct 28, 2026

Affected

1 pkg

Patched

1 / 1

Exploits

None indexed

Exploitation data as of Nov 5, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

Exploitation Status

Proof-of-concept exploit code exists

CISA’s SSVC triage found public proof-of-concept exploit code for this CVE, though no confirmed active exploitation.
CISA assesses this as automatable — exploitation doesn’t require manual, per-target effort, which raises the odds of mass scanning and opportunistic attacks.

Exploitation and automatability from CISA’s SSVC triage for CVE-2026-21696.

EPSS Exploitation Probability

via FIRST.org ↗

0.6%probability of exploitation in next 30 days

Lower Risk0.00%

Lower risk than most CVEs46th percentile — riskier than 46% of all scored CVEsHighest risk

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

Real-World Exposure

1 pkg affected

🐹github.com/pterodactyl/wings

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects Go packages — download data is not available via public APIs for these ecosystems.

Description

Summary

Wings does not consider SQLite max parameter limit when processing activity log entries allowing for low privileged user to trigger a condition that floods the panel with activity records

Details

After wings sends activity logs to the panel it deletes the processed activity entries from the wings SQLite database. However, it does not consider the max parameter limit of SQLite, 32766 as of SQLite 3.32.0.

If wings attempts to delete more than 32766 entries from the SQLite database in one query, it triggers an error (SQL logic error: too many SQL variables (1)) and does not remove any entries from the database. These entries are then indefinitely re-processed and resent to the panel each time the cron runs.

https://github.com/pterodactyl/wings/blob/9ffbcdcdb1163da823cf9959b9602df9f7dcb54a/internal/cron/activity_cron.go#L81 https://github.com/pterodactyl/wings/blob/9ffbcdcdb1163da823cf9959b9602df9f7dcb54a/internal/cron/sftp_cron.go#L86

PoC

Any method that can create the required 32767+ activity entries can trigger this vulnerability. It can (and has) been triggered by normal (non-malicious) use. I attached a simple PoC I used while verifying this that uses sftp to quickly create many small files, thus creating activity entries in the SQLite database. https://ptero.co/mococesoca.go

Impact

By successfully exploiting this vulnerability you can trigger a situation where wings will keep uploading the same activity data to the panel repeatedly (growing each time to include new activity) until the panels’ database server runs out of disk space.

Affected Packages

1 total 1 fixed

Ecosystem	Package	Vulnerable range	Fix
🐹Go	`github.com/pterodactyl/wings`	≥ 1.7.0&&< 1.12.0	1.12.0`go get github.com/pterodactyl/wings@v1.12.0`

Affected Products

1 product · 1 configurations

Application

wingspterodactyl

≥ 1.7.0 && < 1.12.0

range

Detection & mitigation playbook

Open-source dependency

Detect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for github.com/pterodactyl/wings, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update github.com/pterodactyl/wings to 1.12.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2026-21696 is resolved across your whole dependency graph.
Workarounds
Cap what an attacker can consume: apply request size, rate and timeout limits in front of the affected component, and run it with memory and CPU limits so exhaustion degrades one worker rather than the whole service.

Frequently Asked Questions

### Summary Wings does not consider SQLite max parameter limit when processing activity log entries allowing for low privileged user to trigger a condition that floods the panel with activity records ### Details After wings sends activity logs to the panel it deletes the processed activity entries from the wings SQLite database. However, it does not consider the max parameter limit of SQLite, 32766 as of SQLite 3.32.0. If wings attempts to delete more than 32766 entries from the SQLite database in one query, it triggers an error (SQL logic error: too many SQL variables (1)) and does not

O3 Security · Impact-Aware SCA

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