CVE-2026-33734

FOSSBilling is a free, open-source billing and client management system. Versions 0.6.0 through 0.7.2 have a SQL injection vulnerability in the `Massmailer` module filter functionality. An authenticated administrator can supply crafted filter values when updating a mass email message, causing untrusted input to be interpolated directly into SQL in the recipient selection query. Version 0.8.0 patches the issue. Some workarounds are available. Restrict administrator access to trusted users only, disable the `Massmailer` module if it is not required, audit existing records in the `mod_massmailer` table for suspicious filter values, and/or review administrator activity related to `Massmailer` message updates.

CVSS

No CVSS.

References

Link	Resource
https://github.com/FOSSBilling/FOSSBilling/security/advisories/GHSA-jf7m-j359-2899
https://github.com/FOSSBilling/FOSSBilling/security/advisories/GHSA-jf7m-j359-2899

Configurations

No configuration.

History

07 Jul 2026, 15:16

Type	Values Removed	Values Added
References	~~() https://github.com/FOSSBilling/FOSSBilling/security/advisories/GHSA-jf7m-j359-2899 -~~	() https://github.com/FOSSBilling/FOSSBilling/security/advisories/GHSA-jf7m-j359-2899 -

06 Jul 2026, 21:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-07-06 21:16

Updated : 2026-07-07 15:16

NVD link : CVE-2026-33734

Mitre link : CVE-2026-33734

CVE.ORG link : CVE-2026-33734

JSON object : View

Products Affected

No product.

CWE

CWE-89

Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')

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