VulnerabilityDeferred
CVE-2026-31049
An issue in Hostbill v.2025-11-24 and 2025-12-01 allows a remote attacker to execute arbitrary code and escalate privileges via the CSV registration field
CRITICAL 9.8EPSS 0.66%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.66%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
An issue in Hostbill v.2025-11-24 and 2025-12-01 allows a remote attacker to execute arbitrary code and escalate privileges via the CSV registration field
- CVSS 3.1
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.66% probability · 50th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-1236
- Source
- cve@mitre.org
References
- https://blog.hostbillapp.com/2025/12/03/hostbill-security-advisory/
- https://github.com/Muhammad5235/HostBill-CVEs-2025/blob/main/Missing%20Server-Side%20Validation/Registration%20fields%20%26%20Import%20Csv
- https://hostbillapp.com/changelog
- https://hostbillapp.com/release-notes/11-27-2025.html
- https://hostbillapp.com/release-notes/12-01-2025.html
- https://hostbillapp.com/responsible-disclosure
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.