XSS in HotelRunner's B2B
Priority LOW 21CWE-79Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- High
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Cross-site scripting
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-79.
Summary
Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in HotelRunner B2B allows Cross-Site Scripting (XSS). This issue affects B2B: before 04.06.2025.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00208 10th percentileScored 2026-11-07
Fix Fixed B2B (HotelRunner): 04.06.2025
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| HotelRunner | B2B | before 04.06.2025 | 04.06.2025 | Patch available | CNA |
- B2B VendorHotelRunner Affected before 04.06.2025 Fixed in 04.06.2025 Patch available CNA
Remediation
- Fix · CNA B2B (HotelRunner) Fixed in 04.06.2025
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Release ·
HotelRunner B2B 04.06.2025
2 records Highest priority Priority LOW 2 LOW
Other records, highest priority first
- TI-2025-03824 Host Header Injection in HotelRunner's B2BPriority LOW 20
Timeline
- 2026-10-02 Threatist record created from CVE-2025-4294
- 2026-10-03 Alias added: GHSA-gphf-mppm-mv89
References
More HotelRunner vulnerabilities
- TI-2025-03825 Open Redirect in HotelRunner's B2B CVSS 3.1MEDIUM 4.7
- TI-2025-03824 Host Header Injection in HotelRunner's B2B CVSS 3.1MEDIUM 4.6
Sources
- CVE-2025-4294 · CVE Program
- CVE-2025-4294 · NVD
- FIRST EPSS
- GHSA-gphf-mppm-mv89 · GitHub Advisory Database · CC BY 4.0
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