Uncontrolled XML entity expansion in the Flock Installer app for Android
Summary
| CVE | CVE-2026-124038 |
|---|---|
| State | PUBLISHED |
| Assigner | flock |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-11-10 16:17:18 UTC |
| Updated | 2026-11-10 16:17:18 UTC |
| Description | An uncontrolled XML entity expansion vulnerability in the Flock Installer app for Android before version 2.35.0 allows an attacker who has a valid technician account and controls or impersonates the camera being set up to crash the app, on devices running Android 10, 11 or 12, by returning a camera configuration response that contains nested XML entity declarations. The vulnerability does not allow the attacker to read or change data on the device, and no customer license plate, video or location data is exposed. Android 13 and later reject the response. The issue is fixed in version 2.35.0; update to 2.35.0 or later. |
Risk And Classification
Primary CVSS: v4.0 1 LOW from 12dd0b25-a5e8-4486-84b1-59c4a6ebd552
CVSS:4.0/AV:A/AC:L/AT:P/PR:L/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Problem Types: CWE-776 | CWE-776 CWE-776 Improper Restriction of Recursive Entity References in DTDs ('XML Entity Expansion')
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 4.0 | 12dd0b25-a5e8-4486-84b1-59c4a6ebd552 | Secondary | 1 | LOW | CVSS:4.0/AV:A/AC:L/AT:P/PR:L/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/C... |
| 4.0 | CNA | CVSS | 1 | LOW | CVSS:4.0/AV:A/AC:L/AT:P/PR:L/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N |
| 3.1 | 12dd0b25-a5e8-4486-84b1-59c4a6ebd552 | Secondary | 2.3 | LOW | CVSS:3.1/AV:A/AC:H/PR:L/UI:R/S:U/C:N/I:N/A:L |
| 3.1 | CNA | CVSS | 2.3 | LOW | CVSS:3.1/AV:A/AC:H/PR:L/UI:R/S:U/C:N/I:N/A:L |
CVSS v4.0 Breakdown
CVSS:4.0/AV:A/AC:L/AT:P/PR:L/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CVSS v3.1 Breakdown
CVSS:3.1/AV:A/AC:H/PR:L/UI:R/S:U/C:N/I:N/A:L
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Flock | Flock Installer App | affected 2.35.0 custom | Android |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| www.flocksafety.com/legal/security-advisories | 12dd0b25-a5e8-4486-84b1-59c4a6ebd552 | www.flocksafety.com | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
Vendor Comments And Credit
Discovery Credit
CNA: Lucas Franklin (https://nz.linkedin.com/in/lucas-franklin-723782343) (en)
Additional Advisory Data
Solutions
CNA: Update the Flock Installer app to version 2.35.0 or later from Google Play. Customers don't need to take any action; the app is used by Flock technicians, whose phones receive the update through Google Play.
Exploits
CNA: Flock is not aware of exploitation of this vulnerability.