4.8

CVE-2023-1166: USM Premium < 16.3 - Admin+ Stored XSS

Modified
Published 27-06-2023Last modified 27-11-2024

Vulnerability summary

CVE-2023-1166 is a medium (CVSS 4.8) Cross-site Scripting vulnerability in ultimatelysocial usm_premium. EPSS estimates a 0.48% chance of exploitation in the next 30 days, higher than 40.1% of scored vulnerabilities. 1 public exploit is recorded.

Overall risk
29/100
0100
Medium · default modelHow is this calculated?
CVSS score
4.8/10
010
Medium · v3.1 (NVD)
EPSS score
0.48%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits1reference

Timeline

  1. 27-06-2023
    PublishedVulnerability first disclosed.
  2. 27-11-2024
    Last modifiedVulnerability information updated.

Description

The USM-Premium WordPress plugin before 16.3 does not sanitize and escape some of its settings, which could allow high-privilege users such as admin to perform Stored Cross-Site Scripting attacks even when the unfiltered_html capability is disallowed (for example, in multisite setup).

CVSS metrics

2 scores · 2 sources · 1 version

EPSS trend

Probability

0.48%

Chance of exploitation in the next 30 days

Percentile

40%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.48% on 22-09-2026

22-09-202622-10-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

1 found
  • referenceUnverified

    Exploit Reference (wpscan.com)

    Maturity: unknown

Weaknesses

CWE · root cause

Affected systems

Wordpress2 products
  • ultimate-premium-plugin≤ 16.2 (fixed in 16.3)
  • ultimate-social-media-icons≤ 2.8.1 (fixed in 2.8.2)
Ultimatelysocial1 product
Unknown1 product

3 vendors · 4 products

References

3 links