WordPress Simple Membership Plugin <= 4.3.8 is vulnerable to Unauth. Reflected Cross Site Scripting (XSS)

MITRE NVD CVE.ORG JSON API Print: PDF PDF

Summary

CVECVE-2023-50376
StatePUBLISHED
AssignerPatchstack
Source PriorityCVE Program / NVD first with legacy fallback
Published2023-12-19 09:15:36 UTC
Updated2026-04-28 19:22:32 UTC
DescriptionImproper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in smp7, wp.Insider Simple Membership allows Reflected XSS.This issue affects Simple Membership: from n/a through 4.3.8.

Risk And Classification

Primary CVSS: v3.1 6.1 MEDIUM from [email protected]

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

EPSS: 0.001280000 probability, percentile 0.318150000 (date 2026-04-29)

Problem Types: CWE-79 | CWE-79 CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary6.1MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
3.1[email protected]Secondary7.1HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L
3.1CNACVSS7.1HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L

CVSS v3.1 Breakdown

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

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

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Simple-membership-plugin Simple Membership All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Smp7 Wp.insider Simple Membership affected n/a 4.3.8 custom Not specified

References

ReferenceSourceLinkTags
patchstack.com/database/vulnerability/simple-membership/wordpress-simple-mem... af854a3a-2127-422b-91ae-364da2661108 patchstack.com 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: Le Ngoc Anh (Patchstack Alliance) (en)

Additional Advisory Data

SourceTimeEvent
CNA2023-12-11T01:41:00.000ZVulnerability received on the Patchstack Alliance bounty program.
CNA2023-12-11T10:17:00.000ZVulnerability validated by Patchstack researchers.
CNA2023-12-12T06:24:00.000ZPatchstack notified the vendor about the vulnerability.
CNA2023-12-13T10:45:00.000ZVendor confirmed that information was received.
CNA2023-12-16T02:34:00.000ZVendor notified Patchstack that patched version is released.
CNA2023-12-19T06:03:00.000ZPatch validated, vulnerability disclosed to the Patchstack vulnerability database.

Solutions

CNA: Update to 4.3.9 or a higher version.

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