CVE-2021-4290

Database query manipulation via concatenated login input

Published Dec 27, 2022 · Updated Apr 14, 2025

SQL injection in DHBW Fallstudie's Login component allows remote authenticated users to alter database queries through crafted email input. The passport.js login and deserialization paths concatenate email and id values directly into SELECT statements instead of binding them as parameters. The CNA assessment requires adjacent-network reach and low privileges, while public sources document no downstream effect beyond attacker-controlled query semantics.

CVSS severity5.5
Medium
EPSS probability0.60%
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 DHBW Fallstudie's Login component allows remote authenticated users to alter database queries through crafted email input. The passport.js login and deserialization paths concatenate email and id values directly into SELECT statements instead of binding them as parameters. The CNA assessment requires adjacent-network reach and low privileges, while public sources document no downstream effect beyond attacker-controlled query semantics.

The record

CVE
CVE-2021-4290
Published
Dec 27, 2022
Updated
Apr 14, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-89
Attack vector
adjacent
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 27, 2022CVE publishedPublication date reported by the CVE source.
  2. Apr 14, 2025Record 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 vectoradjacent
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

5.5VulDBCVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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)
Vectoradjacent
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

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

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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