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CVE-2026-79569 – SQL Injection (RCE-capable via stacked queries) – Movie_Recommend v1.0.0

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Summary

CVE-2026-79569 is a critical SQL injection vulnerability in Movie_Recommend v1.0.0, affecting the sort parameter of the /loadingmore endpoint (and the related /typesortmovie endpoint). Unauthenticated attackers can inject arbitrary SQL via unsanitized ORDER BY clause construction, leading to full compromise of confidentiality, integrity, and availability of the backing database. The vulnerability carries a CVSS v3.1 base score of 9.8 (Critical).

Technical details

  • Root cause: The application reads the sort request parameter via request.getParameter("sort") and concatenates it directly into a MyBatis-mapped SQL statement (order by ${sort} desc) instead of using a parameterized/bound value. The unsafe concatenation occurs in MovieMapper.xml (around lines 333–342), with the tainted input passed through from IndexController.java (around lines 172–202).
  • Trigger conditions: No authentication or session is required to reach the vulnerable endpoints, and the application does not appear to implement any request-level authorization framework (e.g., Spring Security, Shiro, Sa-Token) in front of them.
  • Attack vector: Remote, unauthenticated HTTP POST requests to /Movie/loadingmore (and /typesortmovie) with a crafted sort parameter value. The underlying MySQL connection is reportedly configured with allowMultiQueries=true, which permits stacked/batched SQL queries in addition to standard UNION/subquery-based injection.
  • Impact: Demonstrated proof-of-concept techniques include time-based blind injection (e.g., sort=numrating,(SELECT SLEEP(5))) to confirm the flaw, and error-based extraction (e.g., sort=numrating desc,(SELECT extractvalue(1,concat(0x7e,database())))) to disclose the database name, version, and current user. Given stacked-query support, the flaw could plausibly be extended to broader data exfiltration, modification, or destruction of database contents, and potentially further host compromise depending on database privileges.

Affected software

  • Movie_Recommend v1.0.0 — vulnerable sort parameter handling in the /loadingmore and /typesortmovie endpoints.

Severity

  • CVSS v3.1 Base Score: 9.8 (Critical)
  • Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
  • CWE: CWE-89 (SQL Injection)

Mitigation and recommended actions

  • Immediate: No official vendor patch has been identified for this open-source project at the time of publication. Organizations running Movie_Recommend v1.0.0 should treat this as unpatched and prioritize remediation.
  • Workarounds / network mitigations:
    • Refactor the affected MyBatis mapper queries to use parameter binding (#{sort}) with a strict server-side allow-list of valid sort column names/directions instead of raw string interpolation (${sort}).
    • Disable allowMultiQueries on the MySQL JDBC connection string unless explicitly required, to reduce the impact of any residual injection points.
    • Restrict or disable public/unauthenticated access to the /loadingmore and /typesortmovie endpoints where feasible, and place a web application firewall (WAF) in front of the application to filter SQL injection patterns as an interim compensating control.
    • Monitor database and application logs for anomalous query patterns, extended response times, or SQL error messages that may indicate exploitation attempts.

References

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