Simple History – Track, Log, and Audit WordPress Changes <= 5.26.0 - Authenticated (Subscriber+) Account Takeover via Missing Authorization on Event Reaction Endpoint

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Summary

CVECVE-2026-7459
StatePUBLISHED
AssignerWordfence
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-05-30 10:16:22 UTC
Updated2026-05-30 10:16:22 UTC
DescriptionThe Simple History – Track, Log, and Audit WordPress Changes plugin for WordPress is vulnerable to authenticated (Subscriber+) account takeover in all versions up to, and including, 5.26.0 via the event reaction endpoints (react_to_event() / unreact_to_event()). The endpoints register get_items_permissions_check() as their permission_callback, which only verifies the requester is logged in and does not enforce the per-logger capability checks normally applied by Log_Query. As a result, a Subscriber-level user can POST to /wp-json/simple-history/v1/events/<id>/react with the _fields=context query parameter and read the full context of any Simple History event — including SimpleUserLogger entries that record the full password-reset email body (reset URL with the reset key) for any user. The attacker triggers a password reset for an administrator via the lost-password form, brute-forces recent event IDs through the reaction endpoint to read the resulting user_requested_password_reset_link event, extracts the reset key from context.message, and completes the password reset to take over the administrator account. Exploitation requires an administrator to have first enabled the experimental features option (simple_history_experimental_features_enabled), which is not the default.

Risk And Classification

Primary CVSS: v3.1 7.5 HIGH from [email protected]

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

EPSS: 0.000610000 probability, percentile 0.192550000 (date 2026-05-30)

Problem Types: CWE-640 | CWE-640 CWE-640 Weak Password Recovery Mechanism for Forgotten Password

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary7.5HIGHCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
3.1CNADECLARED7.5HIGHCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS v3.1 Breakdown

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

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Eskapism Simple History Track Log And Audit WordPress Changes affected 5.26.0 semver Not specified

References

ReferenceSourceLinkTags
plugins.trac.wordpress.org/browser/simple-history/tags/5.26.0/inc/class-wp-rest-events-c... [email protected] plugins.trac.wordpress.org
www.wordfence.com/threat-intel/vulnerabilities/id/95d2bf1a-0993-4553-a00e-6f555... [email protected] www.wordfence.com
plugins.trac.wordpress.org/browser/simple-history/tags/5.26.0/inc/class-wp-rest-events-c... [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/simple-history/trunk/inc/class-wp-rest-events-control... [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/simple-history/tags/5.26.0/inc/class-wp-rest-events-c... [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/simple-history/tags/5.26.0/inc/class-wp-rest-events-c... [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/simple-history/trunk/inc/class-wp-rest-events-control... [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/simple-history/trunk/inc/class-wp-rest-events-control... [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/changeset/3524112/simple-history/trunk/inc/class-wp-rest-even... [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/simple-history/tags/5.26.0/inc/class-event.php [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/simple-history/trunk/inc/class-event.php [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/simple-history/trunk/inc/class-wp-rest-events-control... [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: Ly Hoang (en)

Additional Advisory Data

SourceTimeEvent
CNA2026-04-29T18:22:14.000ZVendor Notified
CNA2026-05-29T20:38:32.000ZDisclosed
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