Overview
A critical server-side request forgery (SSRF) vulnerability has been identified in multiple versions of a-blog cms, a content management system developed by Appleple Inc. Tracked as CVE-2025-36560, this flaw may allow unauthenticated remote attackers to access sensitive internal information by sending specially crafted requests.
What is SSRF?
Server-Side Request Forgery (SSRF) is a vulnerability where an attacker can make the server perform unintended requests on behalf of the attacker. This can lead to exposure of internal systems, bypass of network access controls, and access to services not directly exposed to the internet.
The issue falls under CWE-918, a classification for SSRF vulnerabilities. In this case, a-blog cms does not sufficiently validate input that is used to form outbound server requests.
Vulnerable Versions
The following versions of a-blog cms are affected:
- 2.8.85 and earlier (2.8.x series)
- 2.9.52 and earlier (2.9.x series)
- 2.10.63 and earlier (2.10.x series)
- 2.11.75 and earlier (2.11.x series)
- 3.0.47 and earlier (3.0.x series)
- 3.1.43 and earlier (3.1.x series)
Users are urged to upgrade to the latest version as soon as possible to mitigate the risk.
Severity and CVSS Scores
This vulnerability has been evaluated with the following scores:
- CVSS v3.1 Score: 8.6 (High)
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N - CVSS v4.0 Score: 9.2 (Critical)
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N
These ratings highlight the severity of the vulnerability. With no user interaction and no privileges required, the exploitability is high and the confidentiality impact is substantial.
Risk Context from SSVC
The Stakeholder-Specific Vulnerability Categorization (SSVC) assessment by CISA reports:
- No known active exploitation
- Vulnerability is automatable
- Partial technical impact
While exploitation has not been observed, the risk remains significant due to the potential for future automated attacks.
Mitigation Recommendations
To protect against this vulnerability, administrators should:
- Update to a version of a-blog cms that addresses CVE-2025-36560
- Restrict external requests from server-side logic wherever possible
- Validate and sanitize all user inputs used in server requests
- Monitor network traffic and implement firewall rules to limit unnecessary outbound access
References
Prompt action is advised to avoid potential exploitation of this critical SSRF vulnerability. Ensuring systems are patched and network architecture minimizes exposure is essential in today’s threat landscape.