Is CVE-2026-109353 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-109353 being exploited in the wild.

How severe is CVE-2026-109353?

High severity, with a CVSS score of 7.1, published 12 October 2026.

Is there a fix for CVE-2026-109353?

Yes: fixed in 26.9.0. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2026-109353 attacked?

It is attacked over the network, in a software library.

Am I affected by CVE-2026-109353?

Check whether you run Librenms at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-109353: LibreNMS SQL injection in notifications.inc.php

CVE-2026-109353 · Severity: high · CVSS 7.1 · Published 2026-10-12

LibreNMS is an open-source network monitoring platform. An unprivileged user can inject arbitrary SQL commands through the notification_id parameter, allowing them to read sensitive data like user password hashes from the database. The leaked information is persisted in a readable location, enabling attackers without administrator access to extract credentials and compromise other accounts.

Technologies: Librenms. Vendors: Librenms.

Quick answers

Is CVE-2026-109353 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-109353 being exploited in the wild.
How severe is CVE-2026-109353?: High severity, with a CVSS score of 7.1, published 12 October 2026.
Which products and versions are affected?: Librenms before 26.9.0.
Is there a fix for CVE-2026-109353?: Yes: fixed in 26.9.0. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-109353 attacked?: It is attacked over the network, in a software library.
Am I affected by CVE-2026-109353?: Check whether you run Librenms at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

Fixed in: 26.9.0

Technical details

An array-valued notification_id parameter in includes/html/forms/notifications.inc.php is directly interpolated into a SQL query without proper validation, allowing SQL injection at unprivileged access level (CWE-89). The vulnerability enables arbitrary cross-table reads; attackers can extract user.password hashes by injecting a SELECT subquery, with results persisted in notifications_attribs where they are readable through the web interface, bypassing blind SQL oracle requirements.

Affected products

LibreNMS LibreNMS before 26.9.0

Timeline

2026-09-23: disclosed
2026-10-12: advisory

References

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