CVE-2021-43822Network attack vector

SQL injection via unescaped QOM property names

Published Dec 13, 2021 · Updated Aug 4, 2024

SQL injection in Jackalope Doctrine DBAL before 1.7.4 allows remote authenticated users to alter SQL via crafted node names or queries. QOMWalker inserts property names into XPath expressions embedded in Doctrine DBAL SQL without XPath escaping, allowing quotes or semicolons to close the intended string. Exploitation requires a consuming application to pass user-controlled node names or query input and grants the database access available to that application.

CVSS severity8.5
High
EPSS probability0.97%
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 Jackalope Doctrine DBAL before 1.7.4 allows remote authenticated users to alter SQL via crafted node names or queries. QOMWalker inserts property names into XPath expressions embedded in Doctrine DBAL SQL without XPath escaping, allowing quotes or semicolons to close the intended string. Exploitation requires a consuming application to pass user-controlled node names or query input and grants the database access available to that application.

The record

CVE
CVE-2021-43822
Published
Dec 13, 2021
Updated
Aug 4, 2024
Vendor
Jackalope
Product
Jackalope Doctrine DBAL
Classifications
CWE-89, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 13, 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?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 1.7.4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Jackalope · Jackalope Doctrine DBALversion=< 1.7.4

Published CVSS scores

8.5GitHub, Inc.CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
6.8NIST NVDAV:N/AC:M/Au:N/C:P/I:P/A:P
7.5NIST NVDCVSS:3.1/AV:N/AC:H/PR:L/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

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

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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