5.5

CVE-2021-24455: themeum tutor lms Cross-site Scripting

CVSS: 5.5v3.1MediumModified
Published 02-08-2021Last modified 03-08-2024
Open JSON

Vulnerability summary

CVE-2021-24455 is a medium (CVSS 5.5) Cross-site Scripting vulnerability in themeum tutor lms. EPSS estimates a 0.75% chance of exploitation in the next 30 days, higher than 53.9% of scored vulnerabilities. 1 public exploit is recorded. Fixed in 1.9.2.

Overall risk
32/100
0100
Medium · default modelHow is this calculated?
CVSS score
5.5/10
010
Medium · v3.1 (wordfence)
EPSS score
0.75%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1reference

Timeline

  1. 02-08-2021
    PublishedVulnerability first disclosed.
  2. 03-08-2024
    Last modifiedVulnerability information updated.

Description

The Tutor LMS – eLearning and online course solution WordPress plugin before 1.9.2 did not escape the Summary field of Announcements (when outputting it in an attribute), which can be created by users as low as Tutor Instructor. This lead to a Stored Cross-Site Scripting issue, which is triggered when viewing the Announcements list, and could result in privilege escalation when viewed by an admin.

CVSS metrics

3 scores · 2 sources · 2 versions

EPSS trend

Probability

0.75%

Chance of exploitation in the next 30 days

Percentile

54%

Versus all other CVEs

30-day change

0.00 pp

From 0.75% on 18-09-2026

18-09-202618-10-2026
EPSS score
0.75%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

1 found
  • referenceUnverified

    Exploit Reference (wpscan.com)

    Maturity: unknown

Weaknesses

CWE · root cause

Affected systems

Themeum1 product
Unknown1 product
Wordpress1 product
  • tutor≤ 1.9.1 (fixed in 1.9.2)

3 vendors · 3 products

References

2 links