CVE-2026-31050 json
Cross Site Scripting vulnerability in Hostbill v.2025-11-24 and 2025-12-01 allows a remote attacker to execute arbitrary code
published 2026-04-24 6 mo ago modified 2026-06-17 4 mo ago also EUVD-2026-25422
- cvss
- 4.9
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.6%
- EPSS 0.6% chance of exploitation in 30 days, percentile 50%
- public exploits
- 0
- none known
Summary
Cross Site Scripting vulnerability in Hostbill v.2025-11-24 and 2025-12-01 allows a remote attacker to execute arbitrary code
CISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- no
- Technical impact
- partial
- Assessed
- 6 mo ago
Exploit prediction
0.63% chance of exploitation in the next 30 days, higher than 50% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- github.com https://github.com/Muhammad5235/HostBill-CVEs-2025/blob/main/Stored%20Cross-Site%20Scripting%20%28XSS%29%20Vulnerability/admin%20and%20client%20interfaces referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CISA ADP | 3.1 | 4.9 | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N |
| CNA | 3.1 | 4.9 | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N |
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
References
-
github.com
/Muhammad5235/HostBill-CVEs-2025/blob/main/Stored%20Cross-Site%20Scripting%20%28XSS%29%20Vulnerability/admin%2
exploit
- hostbillapp.com /changelog
- hostbillapp.com /release-notes/11-27-2025.html
- blog.hostbillapp.com /2025/12/03/hostbill-security-advisory/
- hostbillapp.com /responsible-disclosure
- hostbillapp.com /release-notes/12-01-2025.html
Sources
- CVE List CVE-2026-31050
- NVD CVE-2026-31050
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