What is CVE-2023-1031?

CVE-2023-1031 is a high-severity vulnerability in Monicahq Monica, classified under Cross-site Scripting. CVSS score: 8.8/10. Published 2023-05-08.

How severe is CVE-2023-1031?

High severity. CVSS v3 base score is 8.8 out of 10.

XSS in Monicahq Monica

CVE-2023-1031

MonicaHQ version 4.0.0 allows an authenticated remote attacker to execute malicious code in the application via CSTI in the `settings` endpoint and first_name parameter.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2023-05-08 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.014 (71.9th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 72nd percentile — 71.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.014 · newest: 0.014 · change: 0.000

Affected products

Monicahq Monica — versions 4.0.0
Monicahq — versions 4.0.0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

fluidattacks.com/advisories/napoli (Exploit, Third Party Advisory)
www.monicahq.com/ (Product)

Frequently asked questions

What is CVE-2023-1031?: CVE-2023-1031 is a high-severity vulnerability in Monicahq Monica, classified under Cross-site Scripting. CVSS score: 8.8/10. Published 2023-05-08.
How severe is CVE-2023-1031?: High severity. CVSS v3 base score is 8.8 out of 10.