CVE-2026-34717Network attack vector

Database read and modification via unparameterized query

Published Apr 2, 2026 · Updated Apr 2, 2026

SQL injection in OpenProject before 17.2.3 allows remote authenticated users with cost report access to read or modify database data. The =n cost-report operator passes parse_number_string output into an interpolated SQL WHERE expression after removing only locale delimiters, leaving SQL metacharacters active. Cost-report access is required, and successful injection can expose or alter any data available to the application database account.

CVSS severity9.9
Critical
EPSS probability0.27%
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 OpenProject before 17.2.3 allows remote authenticated users with cost report access to read or modify database data. The =n cost-report operator passes parse_number_string output into an interpolated SQL WHERE expression after removing only locale delimiters, leaving SQL metacharacters active. Cost-report access is required, and successful injection can expose or alter any data available to the application database account.

The record

CVE
CVE-2026-34717
Published
Apr 2, 2026
Updated
Apr 2, 2026
Vendor
OpenProject GmbH
Product
OpenProject
Classifications
CWE-89, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 2, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 2, 2026Record 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=< 17.2.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

OpenProject GmbH · OpenProjectversion=< 17.2.3

Published CVSS scores

8.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
9.9GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/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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