CVE-2026-25310: 
WordPress vulnerability analysis and mitigation

CVE-2026-25310 is a Server-Side Request Forgery (SSRF) vulnerability in the Alobaidi "Extend Link" WordPress plugin, affecting all versions up to and including 2.0.0. The vulnerability was reported on December 22, 2025, published by Patchstack on January 21, 2026, and assigned a CVSS v3.1 base score of 4.9 (Medium) (Patchstack). The patched version is 2.0.1 (Patchstack).

The vulnerability is classified as CWE-918 (Server-Side Request Forgery), where the plugin fails to adequately validate or restrict user-supplied URLs before making server-side HTTP requests. Exploitation requires a low-privilege account (Contributor or Developer level) and has high attack complexity, but no user interaction is needed. A successful attack causes a changed scope, meaning the impact extends beyond the vulnerable component itself (Patchstack).

Exploitation of this vulnerability could allow an authenticated attacker to force the WordPress server to issue HTTP requests to arbitrary internal or external domains of the attacker's choosing. This may expose sensitive information from internal services running on the same host or network (e.g., cloud metadata endpoints, internal APIs), resulting in limited confidentiality and integrity impacts. Availability is not affected (Patchstack).

No public proof-of-concept exploit code or in-the-wild exploitation has been reported for this vulnerability. The EPSS score is approximately 0.017%, indicating a very low probability of exploitation in the near term. The vulnerability is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, and no threat actor attribution has been identified (Feedly, Patchstack).

1. Reconnaissance: Identify WordPress sites running the Extend Link plugin version 2.0.0 or earlier using tools like WPScan or Shodan.
2. Obtain low-privilege access: Authenticate to the target WordPress site with at least Contributor or Developer-level credentials.
3. Identify vulnerable functionality: Locate the plugin's link-handling feature that accepts user-supplied URLs without adequate server-side validation.
4. Craft SSRF payload: Submit a request containing a crafted URL pointing to an internal resource (e.g., http://169.254.169.254/latest/meta-data/ for cloud metadata, or internal network services) via the plugin's input field.
5. Retrieve response: The server fetches the attacker-specified URL and may return or expose sensitive data from internal services, which the attacker can then collect (Patchstack).

• Network: Outbound HTTP requests from the WordPress server to internal IP ranges (e.g., 169.254.x.x, 10.x.x.x, 172.16.x.x, 192.168.x.x) or unexpected external domains originating from the web server process.
• Logs: Web server or application logs showing plugin-initiated requests to unusual or internal endpoints; repeated requests to cloud metadata URLs (e.g., 169.254.169.254).
• Process: The PHP/web server process making unexpected outbound connections not consistent with normal plugin behavior.

The vendor has released version 2.0.1 of the Extend Link plugin, which resolves this vulnerability. Site administrators should update the plugin to version 2.0.1 or later immediately via the WordPress admin dashboard. Patchstack users can enable auto-update for vulnerable plugins as an additional safeguard. If an immediate update is not possible, consider disabling the plugin until patching can be performed (Patchstack).

Patchstack, which discovered and disclosed the vulnerability through researcher theviper17, classifies this as low priority with unlikely exploitation impact. No significant broader media coverage or notable researcher commentary beyond the initial Patchstack advisory has been identified (Patchstack).