CVE-2026-31049

CRITICALNVD 9.89.8—Elevated

9.8

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 v3: 9.8
EG Score: 9.8(medium)
EPSS: 58.0%
KEV: Not listed

Published

April 14, 2026

Last Modified

April 27, 2026

Advisory Details (6)

Auto-updated May 10, 2026

No patch confirmed yet.

generic

Responsible Disclosure | HostBill | Billing & Automation Software for WebHosts

https://hostbillapp.com/responsible-disclosure

generic

HostBill | Release Notes: Version: December 1, 2025

https://hostbillapp.com/release-notes/12-01-2025.html

generic

HostBill | Release Notes: Version: November 27, 2025

https://hostbillapp.com/release-notes/11-27-2025.html

generic

HostBill changelog | HostBill | Billing & Automation Software for WebHosts

https://hostbillapp.com/changelog

generic

HostBill-CVEs-2025/Missing Server-Side Validation/Registration fields & Import Csv at main · Muhammad5235/HostBill-CVEs-2025 · GitHub

https://github.com/Muhammad5235/HostBill-CVEs-2025/blob/main/Missing%20Server-Side%20Validation/Registration%20fields%20%26%20Import%20Csv

generic

HostBill Security Advisory - HostBill Blog

https://blog.hostbillapp.com/2025/12/03/hostbill-security-advisory/

Weakness Classification(1)

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

CWE-1236Improper Neutralization of Formula Elements in a CSV File

Data Freshness Timeline

(refreshed 17× in last 7d / 20× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-05-31 22:30 UTCepss_batch
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2026-05-31 00:16 UTCepss_batch
2026-05-31 00:16 UTCepss_batch
2026-05-29 13:44 UTCepss_batch
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2026-05-28 13:44 UTCepss_batch
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2026-05-28 13:44 UTCepss_batch
2026-05-27 13:40 UTCepss_batch
2026-05-27 13:40 UTCepss_batch
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2026-05-26 13:44 UTCepss_batch
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2026-05-26 07:18 UTCepss_batch
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2026-05-24 16:59 UTCepss_batch
2026-05-23 15:21 UTCepss_batch
2026-05-22 21:16 UTCepss_batch

Frequently asked(5)

What is CVE-2026-31049?

CVE-2026-31049 is a critical vulnerability published on April 14, 2026. 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

When was CVE-2026-31049 disclosed?

CVE-2026-31049 was first published in the National Vulnerability Database on April 14, 2026, with the most recent update on April 27, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2026-31049 actively exploited?

CVE-2026-31049 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 58.0% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2026-31049?

CVE-2026-31049 has a CVSS v3 base score of 9.8 (NVD).

How do I remediate CVE-2026-31049?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-31049, 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

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-31049

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Is Your Infrastructure Affected by CVE-2026-31049?

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CVE-2026-31049

📅 Published

🔄 Last Modified

📋 Advisory Details (6)

Responsible Disclosure | HostBill | Billing & Automation Software for WebHosts

HostBill | Release Notes: Version: December 1, 2025

HostBill | Release Notes: Version: November 27, 2025

HostBill changelog | HostBill | Billing & Automation Software for WebHosts

HostBill-CVEs-2025/Missing Server-Side Validation/Registration fields & Import Csv at main · Muhammad5235/HostBill-CVEs-2025 · GitHub

HostBill Security Advisory - HostBill Blog

Weakness Classification(1)

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2026-31049?

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Published

Last Modified

Advisory Details (6)

Frequently asked(5)

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