What is CVE-2024-3822?

CVE-2024-3822 is a medium-severity vulnerability in Mranderson Base64 Encoder\/decoder, classified under Cross-site Scripting. CVSS score: 4.8/10. Published 2024-05-15.

How severe is CVE-2024-3822?

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

Is CVE-2024-3822 known to be exploited?

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

XSS in Mranderson Base64 Encoder\/decoder

CVE-2024-3822

The Base64 Encoder/Decoder WordPress plugin through 0.9.2 does not sanitise and escape a parameter before outputting it back in the page, leading to a Reflected Cross-Site Scripting which could be used against high privilege users such as admin

Vulnerability class: XSS (Cross-Site Scripting)

Published 2024-05-15 · last modified 2026-07-29.

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: 0.007 (53.2th percentile), scored 2026-10-03.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 53rd percentile — 53.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: +0.000

Affected products

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

Public proof-of-concept exploits

fkie-cad/nvd-json-data-feeds

References

wpscan.com/vulnerability/ff5411b1-9e04-4e72-a502-e431d774642a/ (Exploit, technical-description, Third Party Advisory, exploit, vdb-entry)

Frequently asked questions

What is CVE-2024-3822?: CVE-2024-3822 is a medium-severity vulnerability in Mranderson Base64 Encoder\/decoder, classified under Cross-site Scripting. CVSS score: 4.8/10. Published 2024-05-15.
How severe is CVE-2024-3822?: Medium severity. CVSS v3 base score is 4.8 out of 10.
Is CVE-2024-3822 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.