CVE-2026-39179 Overview
CVE-2026-39179 is a SQL injection vulnerability in SOGo, an open source groupware server providing calendar, contacts, and mail functionality. Versions prior to 5.12.7 fail to sanitize the newPassword parameter in the password change functionality. Authenticated users can inject arbitrary SQL statements that execute against the backend database. The issue is patched in SOGo 5.12.7.
Critical Impact
Authenticated attackers can execute arbitrary SQL statements through the newPassword parameter, exposing credentials, mailbox contents, and calendar data stored in the SOGo backend database.
Affected Products
- SOGo groupware server versions prior to 5.12.7
- Deployments using the built-in password change functionality
- Environments where the SOGo backend is connected to a shared database instance
Discovery Timeline
- 2026-07-08 - CVE-2026-39179 published to NVD
- 2026-07-08 - Last updated in NVD database
Technical Details for CVE-2026-39179
Vulnerability Analysis
SOGo exposes a password change endpoint that accepts a newPassword parameter supplied by an authenticated user. Prior to version 5.12.7, this parameter is concatenated into a SQL statement without proper parameterization or escaping. An authenticated attacker can craft a payload that terminates the intended statement and appends additional SQL commands. The database executes these commands with the privileges of the SOGo service account.
The attack requires valid credentials, which limits exposure to users who already have accounts on the server. However, in multi-tenant deployments this includes any hosted user. Successful exploitation can read or modify user records, session tokens, and mail-related metadata stored in the SOGo schema.
The EPSS score is 0.149%, reflecting limited observed exploitation activity at time of publication.
Root Cause
The root cause is missing input sanitization in the password update routine. The newPassword value is treated as trusted string data and inserted directly into a SQL query rather than passed as a bound parameter. The fix in commit 1f7e5d2b2c2047c44a6a9e05f73c36491cb96d21 addresses the unsafe query construction. Refer to the SOGo v5.12.7 release announcement for the vendor description.
Attack Vector
An authenticated user submits a crafted newPassword value through the password change interface or its underlying API endpoint. The payload contains SQL metacharacters that break out of the intended string context. The injected statements execute in the database session used by the SOGo service. See the upstream patch commit for the exact code paths involved.
Detection Methods for CVE-2026-39179
Indicators of Compromise
- Password change requests containing SQL metacharacters such as single quotes, semicolons, or UNION, SELECT, -- sequences in the newPassword field
- Unexpected database errors correlated with the SOGo password change endpoint in application logs
- New or modified rows in SOGo user tables outside of normal administrative activity
- Outbound database queries from the SOGo service account that do not match the standard query fingerprint
Detection Strategies
- Enable verbose logging on the SOGo web tier and inspect POST bodies to the password change route for injection payloads
- Correlate SOGo application logs with database query logs to identify statement structures that deviate from the parameterized baseline
- Alert on database errors originating from the SOGo service account, since exploitation attempts often produce syntax exceptions
Monitoring Recommendations
- Forward SOGo access logs and PostgreSQL or MySQL audit logs to a centralized analytics platform for correlation
- Baseline the volume and shape of legitimate password change requests, then alert on anomalies in payload length or character distribution
- Track authentication events for accounts that subsequently issue password change requests with unusual payloads
How to Mitigate CVE-2026-39179
Immediate Actions Required
- Upgrade SOGo to version 5.12.7 or later on all servers
- Rotate credentials for any account that could have been used to exploit the endpoint prior to patching
- Review database audit logs for statements originating from the SOGo service account that do not match expected query patterns
- Restrict network exposure of the SOGo web interface to trusted networks until patching completes
Patch Information
The vendor fix is available in SOGo 5.12.7. The relevant source change is provided in the GitHub commit and announced in the SOGo v5.12.7 release notes. Administrators should apply the upstream package or rebuild from the tagged release.
Workarounds
- Disable the in-application password change feature and require password resets through an out-of-band administrative process until the patch is applied
- Restrict the database account used by SOGo to the minimum privileges required, limiting the impact of any injected statements
- Deploy a web application firewall rule that inspects the newPassword parameter and blocks requests containing SQL metacharacters
# Verify installed SOGo version and upgrade on Debian/Ubuntu
dpkg -l | grep sogo
sudo apt-get update
sudo apt-get install --only-upgrade sogo=5.12.7-*
sudo systemctl restart sogo
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
