Cyber Resilience

CVE-2021-47966

HighPublic PoC

Published: 15 May 2026

Published
15 May 2026
Modified
18 May 2026
KEV Added
Patch
CVSS Score v4 8.8 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
EPSS Score 0.0027 18.7th percentile
Risk Priority 55 floored blend · peak EPSS

Summary

CVE-2021-47966 is a high-severity SQL Injection (CWE-89) vulnerability in Sourceforge (inferred from references). Its CVSS base score is 8.8 (High).

Operationally, ranked at the 18.7th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.

OWASP Top 10 for Web (2025)

EU & UK References

Vulnerability details

PHP Timeclock 1.04 contains time-based and boolean-based blind SQL injection vulnerabilities in the login_userid parameter of login.php that allows unauthenticated attackers to extract database contents. Attackers can submit crafted POST requests with SQL payloads using SLEEP functions or RLIKE conditional…

more

statements to dump sensitive database information including employee names and credentials.

CWE(s)

Related Threats

CVEs Like This One

CVE-2026-26709Shared CWE-89
CVE-2026-24956Shared CWE-89
CVE-2021-47980Shared CWE-89
CVE-2018-25199Shared CWE-89
CVE-2026-27179Shared CWE-89
CVE-2026-33615Shared CWE-89
CVE-2025-0308Shared CWE-89
CVE-2025-28939Shared CWE-89
CVE-2019-25581Shared CWE-89
CVE-2026-27885Shared CWE-89

Affected Assets

Sourceforge
inferred from references and description; NVD did not file a CPE for this CVE

Mitigating Controls

Likely Mitigating Controls AI

Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.

addresses: CWE-89

Penetration testing uses SQL injection payloads against database interfaces, identifying and supporting fixes for SQL injection weaknesses.

addresses: CWE-89

Validates query inputs to prevent SQL syntax or command manipulation.

References