CVE-2026-24381 Overview
CVE-2026-24381 is a Server-Side Request Forgery (SSRF) vulnerability affecting the ThemeGoods PhotoMe WordPress theme. The flaw exists in all versions up to and including 5.7.2. An unauthenticated attacker can coerce the vulnerable WordPress server into issuing arbitrary HTTP requests on the attacker's behalf. This enables reconnaissance of internal network resources, interaction with metadata services, and potential bypass of network-level access controls. The issue is classified under CWE-918: Server-Side Request Forgery.
Critical Impact
Unauthenticated attackers can abuse the PhotoMe theme to send server-originated requests to internal services, exposing non-public endpoints and cloud metadata APIs.
Affected Products
- ThemeGoods PhotoMe WordPress Theme
- All versions from initial release through 5.7.2
- WordPress installations using the PhotoMe theme
Discovery Timeline
- 2026-01-22 - CVE-2026-24381 published to NVD
- 2026-04-28 - Last updated in NVD database
Technical Details for CVE-2026-24381
Vulnerability Analysis
The PhotoMe theme contains a Server-Side Request Forgery (SSRF) weakness that allows remote attackers to influence the destination of server-issued HTTP requests. The vulnerability is exploitable over the network without authentication, though successful exploitation depends on environmental conditions reflected in the elevated attack complexity. The scope is changed, meaning a successful attack can affect resources beyond the vulnerable component itself, such as backend services or cloud control planes reachable from the WordPress host.
Impact is limited to low confidentiality and low integrity effects. Attackers cannot directly execute code, but they can read responses from internal endpoints, probe internal network topology, and potentially trigger state changes on services that trust requests originating from the WordPress server.
Root Cause
The root cause is improper validation of user-supplied URLs or hostnames passed to server-side HTTP request functions within the theme. The theme accepts external input that is used to construct outbound requests without enforcing an allowlist of permitted destinations or blocking requests to private address ranges (RFC 1918), loopback addresses, and link-local metadata endpoints such as 169.254.169.254.
Attack Vector
An attacker sends a crafted HTTP request to a vulnerable PhotoMe endpoint, supplying a URL pointing to an internal host or cloud metadata service. The WordPress server fetches the supplied URL and may return contents or response metadata to the attacker. Refer to the Patchstack SSRF Vulnerability Advisory for advisory-level details on the affected request flow.
Detection Methods for CVE-2026-24381
Indicators of Compromise
- Outbound HTTP requests from the WordPress host to internal IP ranges (10.0.0.0/8, 172.16.0.0/12, 192.168.0.0/16) that do not correspond to expected application behavior.
- Requests originating from the WordPress server to cloud metadata endpoints such as 169.254.169.254 or metadata.google.internal.
- Web server access logs showing repeated requests to PhotoMe theme endpoints containing URL parameters with external or internal hostnames.
Detection Strategies
- Inspect web access logs for query parameters containing http://, https://, or file:// schemes routed to PhotoMe theme handlers.
- Correlate inbound HTTP requests to the WordPress host with outbound connections initiated by the PHP worker process to detect SSRF chains.
- Apply WAF signatures targeting CWE-918 patterns, particularly URL parameters resolving to private or loopback ranges.
Monitoring Recommendations
- Enable egress logging on the WordPress host and alert on connections to non-allowlisted destinations.
- Monitor for anomalous DNS resolution requests from the web server for internal hostnames.
- Track HTTP response anomalies, such as large or unusual payloads, returned to clients via PhotoMe endpoints.
How to Mitigate CVE-2026-24381
Immediate Actions Required
- Update the ThemeGoods PhotoMe theme to a version later than 5.7.2 once a fixed release is published by the vendor.
- Restrict outbound network access from the WordPress host using host-based or perimeter firewall rules.
- Block access to cloud metadata endpoints (169.254.169.254) from the web server unless explicitly required.
Patch Information
The vulnerability affects PhotoMe versions through 5.7.2. Administrators should consult the Patchstack SSRF Vulnerability Advisory for the latest fixed version and apply the patch as soon as it is available. Until a vendor patch is installed, deploy compensating controls.
Workarounds
- Deploy a Web Application Firewall rule that blocks requests to PhotoMe endpoints containing URL parameters referencing private IP ranges or non-HTTP schemes.
- Disable or remove the PhotoMe theme on WordPress sites that do not require its functionality.
- Configure the PHP runtime to disallow outbound requests to internal addresses by enforcing egress filtering at the network layer.
# Example egress firewall rule using iptables to block metadata endpoint access
iptables -A OUTPUT -d 169.254.169.254 -j DROP
iptables -A OUTPUT -d 10.0.0.0/8 -p tcp --dport 80 -j DROP
iptables -A OUTPUT -d 172.16.0.0/12 -p tcp --dport 80 -j DROP
iptables -A OUTPUT -d 192.168.0.0/16 -p tcp --dport 80 -j DROP
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
