WP Meta SEO < 4.5.5 - Author+ PHAR Deserialization
Priority HIGH 73CWE-502Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-502.
Summary
The WP Meta SEO WordPress plugin before 4.5.5 does not validate image file paths before attempting to manipulate the image files, leading to a PHAR deserialization vulnerability. Furthermore, the plugin contains a gadget chain which may be used in certain configurations to achieve remote code execution.
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.01689 77th percentileScored 2026-11-07
Public exploit Yes 2 exploit referencesTagged by the CNA and NVD
Fix Fixed WP Meta SEO (Unknown): 4.5.5
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Unknown | WP Meta SEO | before 4.5.5 | 4.5.5 | Patch available | CNA |
- WP Meta SEO VendorUnknown Affected before 4.5.5 Fixed in 4.5.5 Patch available CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:joomunited:wp_meta_seo:*:*:*:*:*:wordpress:*:* | before 4.5.5 | Vulnerable | JoomUnited |
- cpe:2.3:a:joomunited:wp_meta_seo:*:*:*:*:*:wordpress:*:* Versions before 4.5.5 Vulnerable ·JoomUnited
Remediation
- Fix · CNA WP Meta SEO (Unknown) Fixed in 4.5.5
Timeline
- 2026-10-02 Threatist record created from CVE-2023-1381
- 2026-10-03 Alias added: GHSA-r57w-p77g-3j43
References
More JoomUnited Wp Meta Seo vulnerabilities
- TI-2023-00830 WP Meta SEO < 4.5.3 - Subscriber+ SQLi CVSS 3.1HIGH 8.8
- TI-2023-00831 WP Meta SEO < 4.5.3 - Subscriber+ Improper Authorization causing Arbitrary Redirect CVSS 3.1MEDIUM 6.1
- TI-2023-06363 WP Meta SEO <= 4.5.12 - Unauthenticated Stored Cross-Site Scripting via Referer header CVSS 3.1HIGH 7.2
- TI-2023-06364 WP Meta SEO <= 4.5.12 - Information Exposure via Meta Description CVSS 3.1MEDIUM 5.3
- TI-2024-30499 WordPress WP Meta SEO plugin <= 4.5.13 - Cross Site Scripting (XSS) vulnerability CVSS 3.1MEDIUM 6.5
- TI-2024-30498 WordPress WP Meta SEO plugin <= 4.5.13 - Cross Site Scripting (XSS) vulnerability CVSS 3.1MEDIUM 5.9
Sources
- CVE-2023-1381 · CVE Program
- CVE-2023-1381 · NVD
- FIRST EPSS
- GHSA-r57w-p77g-3j43 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences