CVE-2023-39851
CVE-2023-39851 is a critical-severity vulnerability in Webchess Project Webchess with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-89.
Key facts
- Severity: Critical (CVSS 3.x base score 9.8)
- EPSS exploit prediction: 1% (49th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-89
- Affected product: Webchess Project Webchess
- Published:
- Last modified:
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.
Frequently asked questions
- What is CVE-2023-39851?
- 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.
- How severe is CVE-2023-39851?
- CVE-2023-39851 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2023-39851 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (49th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2023-39851?
- CVE-2023-39851 affects Webchess Project Webchess. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2023-39851?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
- When was CVE-2023-39851 published?
- CVE-2023-39851 was published on 2023-08-15 and last updated on 2026-06-17.
References
- https://github.com/KLSEHB/vulnerability-report/blob/main/webchess_CVE-2023-39851
- https://sourceforge.net/projects/webchess
Affected products (1)
- cpe:2.3:a:webchess_project:webchess:1.0:*:*:*:*:*:*:*
More vulnerabilities in Webchess Project Webchess
- CVE-2019-20896 — Critical (CVSS 9.8): WebChess 1.0 allows SQL injection via the messageFrom, gameID, opponent, messageID, or to parameter.
- CVE-2023-22959 — High (CVSS 8.8): WebChess through 0.9.0 and 1.0.0.rc2 allows SQL injection: mainmenu.php, chess.php, and opponentspassword.php…
All CVEs affecting Webchess Project Webchess →
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