CVE-2025-66923

A Cross-site scripting (XSS) vulnerability in Create/Update Customer(s) in Open Source Point of Sale v3.4.1 allows remote attackers to inject arbitrary web script or HTML via the phone_number parameter.

CVSS 3.1

7.2CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

EPSS

0.6% chance of exploitation in the next 30 days; higher than 45% of CVEs (scores of 2026-10-25)

CWEs

CWE-20, CWE-79

Published

2025-12-17

Modified

2026-10-13

Record from

the NVD, synced 2026-10-19

Affected

• opensourcepos:open_source_point_of_sale

References

• https://github.com/omkaryepre/vulnerability-research/blob/main/CVE-2025-66923/readme.md
• https://github.com/opensourcepos/opensourcepos
• https://github.com/omkaryepre/vulnerability-research/blob/main/CVE-2025-66923/readme.md

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