cve.bz

CVE-2021-42077

9.8 criticalEPSS 2.5%

Critical (9.8) in kaysongroup php event calendar. EPSS 2.5% chance of exploitation in the next 30 days.

PHP Event Calendar before 2021-09-03 allows SQL injection, as demonstrated by the /server/ajax/user_manager.php username parameter. This can be used to execute SQL statements directly on the database, allowing an adversary in some cases to completely compromise the database system. It can also be used to bypass the login form.

Severity

CVSS 3.1

9.8 critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS
2.5% chance of exploitation in the next 30 days; higher than 84% of CVEs (scores of 2026-10-31)
CWE
CWE-89
Published
Modified
Record from
the NVD, synced

Affected

References

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