10Web Booster <= 2.34.5 — Unauthenticated Limited File Write / Cache Poisoning via Query-string Parameter Traversal in Page-Cache Path
CVE-2026-103896Published · Updated Action summary
Affected: ≤2.34.5Update to 2.34.8 or newer
All remediation steps- Severity
- High7.5
- CVSS
- 7.5CVSS 3.1 · CNA (Wordfence)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:NWhat does this vector mean?
AV:NAttack vector- Network
AC:LAttack complexity- Low
PR:NPrivileges required- None
UI:NUser interaction- None
S:UScope- Unchanged
C:NConfidentiality- None
I:HIntegrity- High
A:NAvailability- None
- Weakness
- CWE-22 Path Traversal
- Required access
- No account needed
- Exploit prediction (EPSS)
- No score
- CISA KEV
- Not listed
On this page8
Am I affected?
10Web Booster – Website speed optimization, Cache & Page Speed optimizer tenweb-speed-optimizer
- Affected≤ 2.34.5
- Patched in2.34.8
Update to 2.34.8 or newer.
You are affected if you run ≤ 2.34.5. Version 2.34.8 and later are not affected by this issue.
- Check your version: in wp-admin go to Plugins → Installed Plugins and read the version under 10Web Booster – Website speed optimization, Cache & Page Speed optimizer.
- No admin access? Run a passive check of your site. It reads public files only.
- No account is needed to exploit this. Treat any exposed site on an affected version as at risk.
What to do
- Update to version 2.34.8, or a newer patched version
- Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.
- Watch 10Web Booster – Website speed optimization, Cache & Page Speed optimizer to get an email when the next vulnerability is published.
Advisory
Source description from Wordfence Intelligence, credited to Swayam Bhageria.
The 10Web Booster – Website speed optimization, Cache & Page Speed optimizer plugin for WordPress is vulnerable to a limited file write via path traversal in versions up to, and including, 2.34.5 This is due to the OptimizerWebPageCache::get_cache_file_dir() function concatenating raw, unsanitized $_GET parameter names and values into the on-disk cache path, and the cache_content() sink calling mkdir() and file_put_contents() on the result with no realpath containment check — unlike the sibling delete_page_cache(), which does perform one. This makes it possible for unauthenticated attackers to create arbitrary directories (mode 0777, recursively) outside the cache root and write a cached page into them. The write is LIMITED: the filename is always 'source.html', so the extension is fixed, and the content is the rendered page buffer rather than attacker-supplied data. PHP files cannot be written and code execution is not possible; the demonstrated impact is cache poisoning and arbitrary directory creation.
Exploits & references
Proof-of-concept & detection
No public proof-of-concept or detection template is known for this vulnerability.
Advisories & patches
- Advisorywordfence.com
Related CVEs
More in 10Web Booster – Website speed optimization, Cache & Page Speed optimizer
All 11| Severity | Vulnerability | CVE | Published |
|---|---|---|---|
| Critical9.8 | Unauthenticated Arbitrary File Upload via 'page_id' Parameter ≤2.34.10Update to 2.34.11 | CVE-2026-108587 | |
| High7.2 | Unauthenticated Stored Cross-Site Scripting via Comment Author Name ≤2.34.8Update to 2.34.10 | CVE-2026-107742 | |
| High7.5 | Authenticated (Contributor+) PHP Object Injection ≤2.33.6Update to 2.34.0 | CVE-2026-94121 | |
| Medium5.3 | Missing Authorization ≤2.33.0Update to 2.34.0 | CVE-2026-82195 | |
| High7.2 | Unauthenticated Stored Cross-Site Scripting ≤2.33.4Update to 2.33.5 | CVE-2026-14287 |
- Critical9.8Unauthenticated Arbitrary File Upload via 'page_id' Parameter
≤2.34.10Update to 2.34.11
- High7.2Unauthenticated Stored Cross-Site Scripting via Comment Author Name
≤2.34.8Update to 2.34.10
- High7.5Authenticated (Contributor+) PHP Object Injection
≤2.33.6Update to 2.34.0
- Medium5.3Missing Authorization
≤2.33.0Update to 2.34.0
- High7.2Unauthenticated Stored Cross-Site Scripting
≤2.33.4Update to 2.33.5
Same weakness (Path Traversal)
All Path Traversal| Severity | Vulnerability | CVE | Published |
|---|---|---|---|
| High7.2 | Unauthenticated Stored Cross-Site Scripting via Comment User-Agent Header | CVE-2026-120688 | |
| Critical9.8 | Unauthenticated Arbitrary File Upload via File Upload via Public Form Submission | CVE-2026-125055 | |
| Critical9.8 | Unauthenticated PHP Object Injection to Remote Code Execution via 'form' Parameter | CVE-2026-119077 | |
| Medium5.3 | Unauthenticated Sensitive Information Exposure in 'search' Parameter | CVE-2026-121518 |
- High7.2Unauthenticated Stored Cross-Site Scripting via Comment User-Agent Header
EZ SQL Reports Shortcode Widget and DB Backup
≤5.25.25Update to 5.26.45
- Critical9.8Unauthenticated Arbitrary File Upload via File Upload via Public Form Submission
Chatterbug Forms – Fast, Flexible WordPress Form Builder
≤1.0.2Update to 1.1
- Critical9.8Unauthenticated PHP Object Injection to Remote Code Execution via 'form' Parameter
ELEX WordPress HelpDesk & Customer Ticketing System
≤3.3.9Update to 3.4.0
- Medium5.3Unauthenticated Sensitive Information Exposure in 'search' Parameter
Customer Reviews for WooCommerce
≤5.127.0Update to 5.128.0
Timeline
CVE published
Severity high, CVSS 7.5
Record last updated
Sources & licenses
Wordfence record- Vulnerability data
- Wordfence Intelligence. [object Object] Licensed under the CC BY-SA 4.0.
- CVE® identifiers
- [object Object]. Used under the CVE Program. CVE® is a registered trademark of The MITRE Corporation.
- CVSS / CWE
- National Vulnerability Database (NVD), shown unmodified. This product uses the NVD API but is not endorsed or certified by the NVD.
- VulnCrest content
- Summary, remediation guidance and page layout © VulnCrest. Not sourced from NVD.