Vulnerability · Published Jul 22, 2025 · Assigned by TR-CERT
CVE-2025-4295Host Header Injection in HotelRunner's B2B
Medium 4.6
In plain English
A medium-severity security flaw in B2B from HotelRunner. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.1% (higher than 2% of all known vulnerabilities).
Severity (CVSS 3.1)4.6Medium
Exploit odds (30 days)0.1%top 98.3% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
Improper Validation of Certificate with Host Mismatch vulnerability in HotelRunner B2B allows HTTP Response Splitting. This issue affects B2B: before 04.06.2025.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| HotelRunner | B2B | 0 – before 04.06.2025 |
Weakness: CWE-297 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N
References
- https://www.usom.gov.tr/bildirim/tr-25-0169 government-resource, broken-link
- https://siberguvenlik.gov.tr/guvenlik-bildirimleri/detay/tr-25-0169 government-resource