WP-Optimize <= 4.5.0 - Missing Authorization to Authenticated (Subscriber+) Plugin Settings Update and Image Manipulation

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Summary

CVECVE-2026-2712
StatePUBLISHED
AssignerWordfence
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-04-10 02:16:02 UTC
Updated2026-04-24 18:01:58 UTC
DescriptionThe WP-Optimize plugin for WordPress is vulnerable to unauthorized access of functionality due to missing capability checks in the `receive_heartbeat()` function in `includes/class-wp-optimize-heartbeat.php` in all versions up to, and including, 4.5.0. This is due to the Heartbeat handler directly invoking `Updraft_Smush_Manager_Commands` methods without verifying user capabilities, nonce tokens, or the allowed commands whitelist that the normal AJAX handler (`updraft_smush_ajax`) enforces. This makes it possible for authenticated attackers, with Subscriber-level access and above, to invoke admin-only Smush operations including reading log files (`get_smush_logs`), deleting all backup images (`clean_all_backup_images`), triggering bulk image processing (`process_bulk_smush`), and modifying Smush options (`update_smush_options`).

Risk And Classification

Primary CVSS: v3.1 5.4 MEDIUM from [email protected]

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

EPSS: 0.000430000 probability, percentile 0.129740000 (date 2026-04-27)

Problem Types: CWE-863 | CWE-863 CWE-863 Incorrect Authorization

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary5.4MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L
3.1CNADECLARED5.4MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L

CVSS v3.1 Breakdown

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

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Davidanderson WP-Optimize Cache Compress Images Minify Clean Database To Boost Page Speed Performance affected 4.5.0 semver Not specified

References

ReferenceSourceLinkTags
research.cleantalk.org/cve-2026-2712 [email protected] research.cleantalk.org
plugins.trac.wordpress.org/browser/wp-optimize/tags/4.4.1/includes/class-wp-optimize-hea... [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/wp-optimize/tags/4.4.1/includes/class-wp-optimize-hea... [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/wp-optimize/trunk/includes/class-wp-optimize-heartbea... [email protected] plugins.trac.wordpress.org
www.wordfence.com/threat-intel/vulnerabilities/id/6a0a376e-ea3a-40ca-9341-f28f9... [email protected] www.wordfence.com
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: Dmitrii Ignatyev (en)

Additional Advisory Data

SourceTimeEvent
CNA2026-03-03T12:42:09.000ZVendor Notified
CNA2026-04-09T11:52:37.000ZDisclosed
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