Ultimate Member <= 2.11.2 - Authenticated (Contributor+) Sensitive Information Exposure to Account Takeover via Shortcode Template Tag

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Summary

CVECVE-2026-4248
StatePUBLISHED
AssignerWordfence
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-03-27 23:17:14 UTC
Updated2026-03-30 13:26:07 UTC
DescriptionThe Ultimate Member plugin for WordPress is vulnerable to Sensitive Information Exposure in all versions up to, and including, 2.11.2. This is due to the '{usermeta:password_reset_link}' template tag being processed within post content via the '[um_loggedin]' shortcode, which generates a valid password reset token for the currently logged-in user viewing the page. This makes it possible for authenticated attackers, with Contributor-level access and above, to craft a malicious pending post that, when previewed by an Administrator, generates a password reset token for the Administrator and exfiltrates it to an attacker-controlled server, leading to full account takeover.

Risk And Classification

Primary CVSS: v3.1 8 HIGH from [email protected]

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

EPSS: 0.000340000 probability, percentile 0.099630000 (date 2026-04-01)

Problem Types: CWE-285 | CWE-285 CWE-285 Improper Authorization

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary8HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
3.1CNADECLARED8HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Ultimatemember Ultimate Member User Profile Registration Login Member Directory Content Restriction Membership Plugin affected * 2.11.2 semver Not specified

References

ReferenceSourceLinkTags
plugins.trac.wordpress.org/browser/ultimate-member/tags/2.11.2/includes/um-short-functio... [email protected] plugins.trac.wordpress.org
github.com/ultimatemember/ultimatemember/pull/1799 [email protected] github.com
www.wordfence.com/threat-intel/vulnerabilities/id/baafd001-144d-4ee4-b7e6-28c09... [email protected] www.wordfence.com
plugins.trac.wordpress.org/changeset/3492178/ultimate-member/trunk/includes/um-short-fun... [email protected] plugins.trac.wordpress.org
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: HDH (en)

Additional Advisory Data

SourceTimeEvent
CNA2026-03-16T05:45:39.000ZVendor Notified
CNA2026-03-27T09:48:30.000ZDisclosed
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