CVE-2021-31856Public exploitNetwork attack vector

Arbitrary SQL execution via unsanitized sort order

Published Apr 28, 2021 · Updated Aug 3, 2024

SQL injection in the Layer5 Meshery 0.5.2 REST API allows remote attackers to execute arbitrary SQL commands through the patternfiles endpoint. GetMesheryPatterns passes the user-controlled order parameter directly to GORM's Order method, which appends it to a database query without filtering. Network access to the endpoint is sufficient, and crafted input can read or alter application data or interrupt service.

CVSS severity9.8
Critical
EPSS probability75.38%
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 the Layer5 Meshery 0.5.2 REST API allows remote attackers to execute arbitrary SQL commands through the patternfiles endpoint. GetMesheryPatterns passes the user-controlled order parameter directly to GORM's Order method, which appends it to a database query without filtering. Network access to the endpoint is sufficient, and crafted input can read or alter application data or interrupt service.

The record

CVE
CVE-2021-31856
Published
Apr 28, 2021
Updated
Aug 3, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-89, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 28, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 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

7.5NIST NVDAV:N/AC:L/Au:N/C:P/I:P/A:P
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)
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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