Cross-site scripting in InstantASP InstantForum.NET
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Cross-site scripting
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-79.
Summary
InstantForum.NET v.4.1.4 from InstantASP ltd is affected. The application reflects un-sanitized query string parameters directly into HTML responses without proper output encoding (CWE-79). A remote attacker can execute arbitrary code in a user's browser, and user interaction is required.
Written with Claude Haiku 5.5 from the sources below · 2026-10-29
Description from the CNA
Cross Site Scripting vulnerability in InstantASP ltd, InstantForum.NET v.4.1.4 allows an attacker to execute arbitrary code via reflecting un-sanitized input from query string parameters directly into the HTML response without proper output encoding
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- 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 |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
Remediation
The sources list no fixed version for InstantForum.NET.
Written with Claude Haiku 5.5 from the sources below · 2026-10-29
Timeline
- 2026-10-16 Threatist record created from CVE-2025-52097
- 2026-10-26 CISA SSVC decision points changed
- 2026-10-26 Priority changed: LOW → MEDIUM
- 2026-10-29 CVSS score added · CISA ADP
- 2026-10-29 Weakness changed · CISA ADP
- 2026-10-29 Alias added: GHSA-f4qw-x63m-jfrp
References
Sources
- CVE-2025-52097 · CVE Program
- CVE-2025-52097 · NVD
- FIRST EPSS
- GHSA-f4qw-x63m-jfrp · GitHub Advisory Database · CC BY 4.0
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