What is CVE-2021-36846?

CVE-2021-36846 is a medium-severity vulnerability in Premio Chaty, classified under Cross-site Scripting. CVSS score: 4.8/10. Published 2022-04-11.

How severe is CVE-2021-36846?

Medium severity. CVSS v3 base score is 4.8 out of 10.

Is CVE-2021-36846 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

XSS in Premio Chaty

CVE-2021-36846

Authenticated (admin or higher user role) Stored Cross-Site Scripting (XSS) vulnerability in Premio Chaty (WordPress plugin) <= 2.8.3

Vulnerability class: XSS (Cross-Site Scripting)

Published 2022-04-11 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 4.8 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.006 (46.6th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 47th percentile — 46.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: +0.000

Affected products

Premio Chaty
Premio Chaty (WordPress Plugin) — versions <= 2.8.3

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

Public proof-of-concept exploits

20142995/nuclei-templates

References

wordpress.org/plugins/chaty/ (Product, Third Party Advisory)
patchstack.com/database/vulnerability/chaty/wordpress-chaty-plugin-2-8-3-authen… (Third Party Advisory)

Frequently asked questions

What is CVE-2021-36846?: CVE-2021-36846 is a medium-severity vulnerability in Premio Chaty, classified under Cross-site Scripting. CVSS score: 4.8/10. Published 2022-04-11.
How severe is CVE-2021-36846?: Medium severity. CVSS v3 base score is 4.8 out of 10.
Is CVE-2021-36846 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.