10Web Booster <= 2.34.10 - Unauthenticated Arbitrary File Upload via 'page_id' Parameter

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-108587
StatePUBLISHED
AssignerWordfence
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-10-15 05:17:02 UTC
Updated2026-10-15 17:17:14 UTC
DescriptionThe 10Web Booster – Website speed optimization, Cache & Page Speed optimizer plugin for WordPress is vulnerable to Arbitrary File Upload in all versions up to, and including, 2.34.10 via the compressCustom function. This is due to missing file type validation and extension filtering on the page_id parameter, combined with a world-readable leaked nonce that bypasses authentication checks. This makes it possible for unauthenticated attackers to upload files that may be executable, which makes remote code execution possible. This exploit chain requires obtaining the plugin's REST nonce (tenwebio_rest), which is automatically serialized to a world-readable file under wp-content/uploads/ whenever a bulk optimisation batch pauses; because the nonce is generated in a cron/loopback context with a user ID of 0, it is valid for unauthenticated visitors.

Risk And Classification

Primary CVSS: v3.1 9.8 CRITICAL from [email protected]

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

Problem Types: CWE-434 | CWE-434 CWE-434 Unrestricted Upload of File with Dangerous Type

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary9.8CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
3.1CNADECLARED9.8CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS v3.1 Breakdown

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

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA 10web 10Web Booster Website Speed Optimization Cache Page Speed Optimizer affected 2.34.10 semver Not specified

References

ReferenceSourceLinkTags
plugins.trac.wordpress.org/browser/tenweb-speed-optimizer/tags/2.34.1/vendor/10web-utils... [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/tenweb-speed-optimizer/tags/2.34.5/vendor/10web-utils... [email protected] plugins.trac.wordpress.org
www.wordfence.com/threat-intel/vulnerabilities/id/adfd97cf-8f61-463d-a535-1a61e... [email protected] www.wordfence.com
plugins.trac.wordpress.org/browser/tenweb-speed-optimizer/tags/2.34.5/vendor/10web-utils... [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/tenweb-speed-optimizer/tags/2.34.5/vendor/10web-utils... [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/tenweb-speed-optimizer/tags/2.34.1/vendor/10web-utils... [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/tenweb-speed-optimizer/tags/2.34.1/vendor/10web-utils... [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/tenweb-speed-optimizer/tags/2.34.1/vendor/10web-utils... [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/tenweb-speed-optimizer/tags/2.34.5/vendor/10web-utils... [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/changeset/3743299/tenweb-speed-optimizer [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/tenweb-speed-optimizer/tags/2.34.1/vendor/10web-utils... [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/tenweb-speed-optimizer/tags/2.34.5/vendor/10web-utils... [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: Osman Hussein (en)

Additional Advisory Data

SourceTimeEvent
CNA2026-10-10T17:45:27.000ZVendor Notified
CNA2026-10-14T15:49:30.000ZDisclosed

© CVE.report 2026

Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. It is the responsibility of user to evaluate the accuracy, completeness or usefulness of any information, opinion, advice or other content. EACH USER WILL BE SOLELY RESPONSIBLE FOR ANY consequences of his or her direct or indirect use of this web site. ALL WARRANTIES OF ANY KIND ARE EXPRESSLY DISCLAIMED. This site will NOT BE LIABLE FOR ANY DIRECT, INDIRECT or any other kind of loss.

CVE, CWE, and OVAL are registred trademarks of The MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. This site includes MITRE data granted under the following license.

Free CVE JSON API cve.report/api

CVE.report and Source URL Uptime Status status.cve.report