CVE-2026-33734

MEDIUMPre-NVD 6.96.9—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 6.9 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.2%, top 88% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, secondary
Elevated
6.9
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 6.9Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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 v3
6.9
EG Score
6.9(medium)
EPSS
12.2%
KEV
Not listed

Published

July 6, 2026

Last Modified

July 7, 2026

Advisory Details (1)

Auto-updated Jul 7, 2026
🔬 Proof of concept available. Patch available. Sources: github.
github Patch Available🟡 PoC Available

Improper SQL neutralization in Massmailer recipient filters · Advisory · FOSSBilling/FOSSBilling · GitHub

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

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 16× in last 7d / 22× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-15 18:12 UTCEG score recompute
  2. 2026-07-15 16:57 UTCEPSS rescore
  3. 2026-07-15 16:57 UTCEPSS rescore
  4. 2026-07-15 02:00 UTCEPSS rescore
  5. 2026-07-14 18:31 UTCEG score recompute
  6. 2026-07-13 22:30 UTCEPSS rescore
  7. 2026-07-13 18:51 UTCEG score recompute
  8. 2026-07-13 06:13 UTCEPSS rescore
  9. 2026-07-13 06:13 UTCEPSS rescore
  10. 2026-07-12 19:10 UTCEG score recompute
  11. 2026-07-12 05:46 UTCEPSS rescore
  12. 2026-07-11 19:30 UTCEG score recompute
  13. 2026-07-11 08:27 UTCEPSS rescore
  14. 2026-07-10 19:48 UTCEG score recompute
  15. 2026-07-09 20:08 UTCEG score recompute
  16. 2026-07-09 19:10 UTCEPSS rescore
  17. 2026-07-08 20:26 UTCEG score recompute
  18. 2026-07-08 15:15 UTCEPSS rescore
  19. 2026-07-07 20:45 UTCEG score recompute
  20. 2026-07-07 13:46 UTCEPSS rescore
  21. 2026-07-06 21:05 UTCEG score recompute
  22. 2026-07-06 21:04 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-33734?
CVE-2026-33734 is a medium vulnerability published on July 6, 2026. 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…
When was CVE-2026-33734 disclosed?
CVE-2026-33734 was first published in the National Vulnerability Database on July 6, 2026, with the most recent update on July 7, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-33734 actively exploited?
CVE-2026-33734 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 12.2% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-33734?
CVE-2026-33734 has a CVSS v3 base score of 6.9 (NVD).
How do I remediate CVE-2026-33734?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-33734, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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