Is CVE-2023-39851 actively exploited?

No active exploitation of CVE-2023-39851 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2023-39851 be exploited remotely?

Yes. CVE-2023-39851 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2023-39851?

CVE-2023-39851 has a CVSS score of 9.8 (CRITICAL).

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CRITICAL

CVE-2023-39851

CWE-89Published: August 15, 2023· Updated: Jun 17, 2026

9.8

CVSS v3.1

Official Description

webchess v1.0 was discovered to contain a SQL injection vulnerability via the $playerID parameter at mainmenu.php. NOTE: this is disputed by a third party who indicates that the playerID is a session variable controlled by the server, and thus cannot be used for exploitation.

NVD Source

Risk Analysis

Webchess v1.0 contains a reported SQL injection vulnerability via the playerID parameter, though this is disputed by third parties who claim the parameter is server-controlled. If exploitable, the 9.8 CVSS score indicates a critical risk of database compromise.

No public exploit is known, and it is not in the CISA KEV catalog. The vulnerability is remotely exploitable.

Recommended Action

Validate all user-supplied input and ensure that session variables cannot be manipulated by external parties.

Generated by the CTIWATCH analysis pipeline from this CVE's metadata (CVSS, EPSS, KEV status, exploit intelligence). Verify against vendor advisories before acting.

Technical Analysis

CVE-2023-39851 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.

From a weakness classification perspective (CWE-89): SQL injection vulnerabilities allow attackers to manipulate database queries, potentially exposing or modifying sensitive data.