6.1

CVE-2021-24963: litespeedtech litespeed_cache Cross-site Scripting

CVSS: 6.1v3.1MediumModified
Published 03-01-2022Last modified 03-08-2024
Open JSON

Vulnerability summary

CVE-2021-24963 is a medium (CVSS 6.1) Cross-site Scripting vulnerability in litespeedtech litespeed_cache. EPSS estimates a 0.65% chance of exploitation in the next 30 days, higher than 50.3% of scored vulnerabilities. 1 public exploit is recorded.

Overall risk
35/100
0100
Medium · default modelHow is this calculated?
CVSS score
6.1/10
010
Medium · v3.1 (wordfence)
EPSS score
0.65%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1reference

Timeline

  1. 03-01-2022
    PublishedVulnerability first disclosed.
  2. 03-08-2024
    Last modifiedVulnerability information updated.

Description

The LiteSpeed Cache WordPress plugin before 4.4.4 does not escape the qc_res parameter before outputting it back in the JS code of an admin page, leading to a Reflected Cross-Site Scripting

CVSS metrics

3 scores · 2 sources · 2 versions

EPSS trend

Probability

0.65%

Chance of exploitation in the next 30 days

Percentile

50%

Versus all other CVEs

30-day change

0.00 pp

From 0.65% on 18-09-2026

18-09-202618-10-2026
EPSS score
0.65%

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

Litespeedtech1 product
Unknown1 product
Wordpress1 product
  • litespeed-cache≥ 1.0.15, ≤ 4.4.3 (fixed in 4.4.4)

3 vendors · 3 products

References

3 links