CVE-2021-41679Public exploitNetwork attack vector

SQL injection via unsanitized period parameter

Published Nov 30, 2021 · Updated Aug 4, 2024

SQL injection in InputFinalGrades.php in openSIS 8.0 allows remote attackers to execute SQL through the period parameter. The grade-report handler inserts the request's period value directly into a SELECT predicate at line 55 without applying sqlSecurityFilter(). The flaw applies when MySQL or MariaDB backs the application; successful injection allows database data to be read or altered and can interrupt database-backed functions.

CVSS severity9.8
Critical
EPSS probability1.31%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

SQL injection in InputFinalGrades.php in openSIS 8.0 allows remote attackers to execute SQL through the period parameter. The grade-report handler inserts the request's period value directly into a SELECT predicate at line 55 without applying sqlSecurityFilter(). The flaw applies when MySQL or MariaDB backs the application; successful injection allows database data to be read or altered and can interrupt database-backed functions.

The record

CVE
CVE-2021-41679
Published
Nov 30, 2021
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-89, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 30, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
6.8NIST NVDAV:N/AC:M/Au:N/C:P/I:P/A:P

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-89Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')
T1190Exploit Public-Facing Application

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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