Base64 Encoder/Decoder <= 0.9.2 - Stored XSS via CSRF

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2024-3823
StatePUBLISHED
AssignerWPScan
Source PriorityCVE Program / NVD first with legacy fallback
Published2024-05-15 06:15:14 UTC
Updated2026-07-29 13:51:49 UTC
DescriptionThe Base64 Encoder/Decoder WordPress plugin through 0.9.2 does not have CSRF check when updating its settings, and is missing sanitisation as well as escaping, which could allow attackers to make logged in admin add Stored XSS payloads via a CSRF attack

Risk And Classification

Primary CVSS: v3.1 2.4 LOW from ADP

CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:N/I:L/A:N

EPSS: 0.002170000 probability, percentile 0.124570000 (date 2026-08-23)

Problem Types: CWE-352 | CWE-79 Cross-Site Scripting (XSS) | CWE-352 Cross-Site Request Forgery (CSRF)

VersionSourceTypeScoreSeverityVector
3.1ADPDECLARED2.4LOWCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:N/I:L/A:N
3.1134c704f-9b21-4f2e-91b3-4a467353bcc0Secondary2.4LOWCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:N/I:L/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
High
User Interaction
Required
Scope
Unchanged
Confidentiality
None
Integrity
Low
Availability
None

CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:N/I:L/A:N

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Mranderson Base64 Encoder/decoder All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Unknown Base64 Encoder/Decoder affected 0.9.2 semver Not specified

References

ReferenceSourceLinkTags
wpscan.com/vulnerability/a138215c-4b8c-4182-978f-d21ce25070d3 af854a3a-2127-422b-91ae-364da2661108 wpscan.com Exploit, Third Party Advisory
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: Bob Matyas (en)

CNA: WPScan (en)

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