🛡️ CVE-2026-26186 — fleet

🟠 CVSS 8.8 — High ✅ No Known Exploit CWE-89 NVD
8.8
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

Fleet has an SQL Injection vulnerability via backtick escape in ORDER BY parameter

Summary

A SQL Injection vulnerability in Fleet’s software versions API allowed authenticated users to inject arbitrary SQL expressions via the order_key query parameter. Due to unsafe use of goqu.I() when constructing the ORDER BY clause, specially crafted input could escape identifier quoting and be interpreted as executable SQL.

Impact

An authenticated attacker with access to the affected endpoint could inject SQL expressions into the underlying MySQL query. Although the injection occurs in an ORDER BY context, it is sufficient to enable blind SQL injection techniques that can disclose database information through conditional expressions that affect result ordering. Crafted expressions may also cause excessive computation or query failures, potentially leading to degraded performance or denial of service.

No direct evidence of reliable data modification or stacked query execution was demonstrated.

Workarounds

If an immediate upgrade is not possible, users should restrict access to the affected endpoint to trusted roles only and ensure that any user-supplied sort or column parameters are strictly allow-listed at the application or proxy layer.

For more information

If there are any questions or comments about this advisory:

Email fleet at [security@fleetdm.com](mailto:[email protected])

Join #fleet in [osquery Slack](https://join.slack.com/t/osquery/shared_invite/zt-h29zm0gk-s2DBtGUTW4CFel0f0IjTEw)

Credits

We thank @fuzzztf for responsibly reporting this issue.

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs low-level privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality high, integrity high, availability high.

Weakness class

CVE-2026-26186 is classified as CWE-89: SQL Injection. Untrusted input is concatenated into an SQL statement, letting an attacker change the query and reach data the request should not return.

Affected software

CVE-2026-26186 is recorded against 2 packages.

  • fleet (fixed in 4.80.1)
  • github.com/fleetdm/fleet/v4

Timeline and source

Published on 26 February 2026 and last revised on 17 June 2026. No public exploit is currently recorded for this entry. Record sourced from NVD.

References

github.com

Details

Severity HIGH
CVSS Score 8.8
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE CWE-89
Public Exploit ✅ No
Source NVD
Published 2026-02-26
Updated 2026-08-12
Modified 2026-06-17
Fix URL N/A

Affected Packages

Software From version Fixed in
fleet — 4.80.1
github.com/fleetdm/fleet/v4 — —

Similar Threats

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