CVE-2025-58203 Overview
CVE-2025-58203 is a Server-Side Request Forgery (SSRF) vulnerability [CWE-918] in the Solace Extra WordPress plugin developed by solacewp. The flaw affects all versions of the plugin up to and including 1.3.2. An authenticated attacker with high privileges can coerce the WordPress server into issuing arbitrary HTTP requests to attacker-chosen destinations. This can be used to probe internal network services, reach cloud metadata endpoints, or interact with services otherwise unreachable from the internet.
Critical Impact
Attackers with high-privilege access can abuse the plugin to send server-side HTTP requests to internal or external hosts, enabling reconnaissance and limited data exposure across normally isolated networks.
Affected Products
- Solace Extra WordPress plugin (solace-extra) versions up to and including 1.3.2
- WordPress sites running the plugin from solacewp
- Deployments where the plugin is active alongside privileged user accounts
Discovery Timeline
- 2025-08-27 - CVE-2025-58203 published to NVD
- 2026-06-17 - Last updated in NVD database
Technical Details for CVE-2025-58203
Vulnerability Analysis
The vulnerability is a Server-Side Request Forgery flaw in the Solace Extra WordPress plugin. The plugin accepts a user-supplied URL and issues a server-side HTTP request without adequate validation of the destination. Because the request originates from the WordPress host, it can reach systems the attacker cannot contact directly.
Successful exploitation requires an authenticated session with high privileges. The attack scope is changed, meaning the impact can extend beyond the vulnerable component to other resources reachable by the server. Confidentiality and integrity impacts are limited, and there is no direct effect on availability.
The EPSS score is 0.163%, indicating a low likelihood of exploitation activity in the near term. No public exploit or CISA KEV listing exists at the time of writing.
Root Cause
The root cause is missing or insufficient validation of a URL parameter passed to a server-side HTTP client function inside the plugin. The plugin does not restrict the destination scheme, host, or IP range before dispatching the request. Requests to loopback addresses, private IP ranges (RFC 1918), and cloud metadata endpoints such as 169.254.169.254 are not blocked.
Attack Vector
Exploitation occurs over the network by an authenticated user with administrative or equivalent privileges. The attacker submits a crafted request to a plugin endpoint that accepts a URL. The Solace Extra plugin then performs an outbound request to that URL from the WordPress server, and the response or side effects can be observed by the attacker.
See the Patchstack SSRF Vulnerability Report for additional technical detail.
Detection Methods for CVE-2025-58203
Indicators of Compromise
- Outbound HTTP or HTTPS requests from the WordPress server to internal IP ranges such as 10.0.0.0/8, 172.16.0.0/12, or 192.168.0.0/16
- Requests from the PHP process to cloud metadata endpoints such as 169.254.169.254
- Unexpected access log entries from authenticated admin sessions invoking Solace Extra plugin endpoints with URL parameters
Detection Strategies
- Inspect PHP-FPM and web server access logs for administrator requests to plugin routes containing URL parameters that point to non-standard destinations
- Monitor egress network flows from the WordPress host and alert on connections to private ranges, link-local addresses, or unusual external hosts
- Correlate WordPress authentication events with outbound HTTP requests originating from the plugin process
Monitoring Recommendations
- Enable WordPress audit logging for privileged user actions on plugin configuration and endpoints
- Deploy egress filtering rules and log any denied outbound requests from the web tier for analyst review
- Track version inventory of the solace-extra plugin across managed WordPress sites and alert when versions at or below 1.3.2 are detected
How to Mitigate CVE-2025-58203
Immediate Actions Required
- Audit all WordPress sites for the presence of the Solace Extra plugin and identify installed versions
- Restrict administrative access to trusted personnel and enforce multi-factor authentication for high-privilege accounts
- Apply egress network controls on the WordPress host to block requests to internal ranges and cloud metadata endpoints
Patch Information
At publication time, the vendor advisory referenced by Patchstack lists versions through 1.3.2 as affected. Administrators should consult the plugin repository for a fixed release and upgrade to a version later than 1.3.2 once available.
Workarounds
- Deactivate and remove the Solace Extra plugin until a patched version is installed
- Enforce strict egress firewall rules blocking WordPress hosts from reaching private subnets and metadata services
- Restrict administrative capabilities and review roles that can invoke the vulnerable plugin functionality
# Example egress restriction using iptables to block metadata access
iptables -A OUTPUT -m owner --uid-owner www-data -d 169.254.169.254 -j REJECT
iptables -A OUTPUT -m owner --uid-owner www-data -d 10.0.0.0/8 -j REJECT
iptables -A OUTPUT -m owner --uid-owner www-data -d 172.16.0.0/12 -j REJECT
iptables -A OUTPUT -m owner --uid-owner www-data -d 192.168.0.0/16 -j REJECT
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
