6.4

CVE-2021-36857: WordPress Testimonial Builder plugin <= 1.6.1 - Authenticated Stored Cross-Site Scripting (XSS) vulnerability

Modified
Published 22-08-2022Last modified 28-04-2026

Vulnerability summary

CVE-2021-36857 is a medium (CVSS 6.4) Cross-site Scripting vulnerability in wordpress testimonial-builder. EPSS estimates a 0.61% chance of exploitation in the next 30 days, higher than 48.3% of scored vulnerabilities. Fixed in 1.6.2.

Overall risk
26/100
0100
Medium · default modelHow is this calculated?
CVSS score
6.4/10
010
Medium · v3.1 (wordfence)
EPSS score
0.61%
0%100%
Low · +0.01 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Timeline

  1. 22-08-2022
    PublishedVulnerability first disclosed.
  2. 28-04-2026
    Last modifiedVulnerability information updated.

Description

Authenticated (editor+) Stored Cross-Site Scripting (XSS) vulnerability in wpshopmart Testimonial Builder plugin <= 1.6.1 at WordPress.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.61%

Chance of exploitation in the next 30 days

Percentile

48%

Versus all other CVEs

30-day change

Increase +0.01 pp

From 0.59% 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

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Wpshopmart2 products
Wordpress1 product
  • testimonial-builder≤ 1.6.1 (fixed in 1.6.2)

2 vendors · 3 products

References

3 links