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PatchSiren cyber security CVE debrief

CVE-2025-52023 Aptsys CVE debrief

CVE-2025-52023 is an information exposure vulnerability in the PHP backend of Gemscms, allowing unauthenticated remote attackers to trigger detailed error messages that disclose internal file paths, code snippets, and stack traces via specially crafted HTTP GET/POST requests to public API endpoints. This issue is classified under CWE-209: Information Exposure Through an Error Message.

Vendor
Aptsys
Product
Gemscms Backend
CVSS
MEDIUM 5.3
CISA KEV
Not listed in stored evidence
Original CVE published
2026-01-23
Original CVE updated
2026-07-05
Advisory published
2026-01-23
Advisory updated
2026-07-05

Who should care

Organizations using Gemscms Backend version up to 2025-05-28 should prioritize patching this vulnerability to prevent potential exploitation. Security teams and administrators responsible for web applications and APIs should be aware of this issue and take necessary measures to protect against information exposure.

Technical summary

The vulnerability exists in the PHP backend of Gemscms, specifically in the way it handles error messages. When an attacker sends a specially crafted HTTP GET/POST request to a public API endpoint, the application responds with a detailed error message that includes internal file paths, code snippets, and stack traces. This information can be useful for further exploitation, potentially leading to more severe attacks. The issue has a CVSS score of 5.3 and is classified as CWE-209: Information Exposure Through an Error Message.

Defensive priority

Medium priority should be given to patching this vulnerability, as it can lead to information exposure and potentially aid in further exploitation.

Recommended defensive actions

  • Apply patches or updates provided by the vendor to fix the vulnerability
  • Implement input validation and sanitization for API endpoints to prevent malicious requests
  • Configure error handling to provide minimal information in error messages
  • Monitor API endpoints for suspicious activity and implement logging and alerting
  • Consider implementing a Web Application Firewall (WAF) to detect and prevent attacks

Evidence notes

The CVE record was published on 2026-01-23T21:15:50.507Z and last modified on 2026-07-05T17:17:15.787Z. The NVD entry is currently Modified. The vulnerability affects Gemscms Backend version up to 2025-05-28.

Sources and references

Verified primary and authoritative sources

  • CVE-2025-52023 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2025-52023

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2025-52023 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2025-52023

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.