Cyber Resilience

CVE-2025-36397

XSS in Ibm Application Gateway 23.10 – 25.09

XSS
Published
20 January 2026
Modified
26 January 2026
Patch / advisory
View advisory
CVSS Score v3.1 5.4
Click a component to see what it means
Raw vectorCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
EPSS Score 0.0016 6th percentile
Risk Priority 35 floored blend · peak EPSS

Summary

CVE-2025-36397 is a medium-severity Basic XSS (CWE-80) vulnerability in Ibm Application Gateway. Its CVSS base score is 5.4 (Medium).

Operationally, ranked at the 6th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

The strongest mitigations our analysis identified map to SI-10 (Information Input Validation) and SI-15 (Information Output Filtering) — see the control section below for these in your framework.

OWASP Top 10 for Web (2025)

A05:2025 Injection

EU & UK References

Vulnerability Data

IBM Application Gateway 23.10 through 25.09 is vulnerable to HTML injection. A remote attacker could inject malicious HTML code, which when viewed, would be executed in the victim's Web browser within the security context of the hosting site.

CWE(s)
CWE-80

Related Threats

CVEs Like This One

CVE-2025-36396Same product: Ibm Application Gateway
CVE-2024-45655Same product: Ibm Application Gateway
CVE-2025-14289Same vendor: Ibm
CVE-2025-66486Same vendor: Ibm
CVE-2025-36121Same vendor: Ibm
CVE-2025-1997Same vendor: Ibm
CVE-2025-33110Same vendor: Ibm
CVE-2025-36230Same vendor: Ibm
CVE-2025-36321Same vendor: Ibm
CVE-2024-28787Same product: Ibm Application Gateway

Affected Assets

ibm
application gateway
23.10 — 25.09

Mitigating Controls

Control response

Prevent
Stop it (NIST 800-53)
  • SI-10 Information Input Validation
  • SI-15 Information Output Filtering
  • SI-3 Malicious Code Protection
Detect
Catch it (NIST detect / respond)
  • SI-3 Malicious Code Protection
Harden
Shrink the surface (DISA STIG)

—

Validate
Prove the fix (OWASP ASVS)
  • V1.2.1
  • V1.3.1
  • V1.3.3
  • V1.3.4

Mitigating Controls (NIST 800-53 r5) AI

SI-10 Information Input Validation good match
prevent

Directly requires validation and sanitization of untrusted input to block malicious HTML/script before it is stored or reflected to users.

SI-15 Information Output Filtering good match
prevent

Requires filtering of information prior to display or transmission, preventing injected HTML from executing in the victim's browser context.

SI-3 Malicious Code Protection partial match
preventdetect

Can detect or block known malicious script patterns at the application gateway boundary, though not a complete substitute for input/output handling.

Mitigating Controls (NIST CSF 2.0) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.

PR.PS-06 mostly match
prevents

Secure SDLC practices directly require output encoding and input validation that prevent basic XSS.

Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.

A.8.29 Security testing in development and acceptance mostly match
detects

Security testing in development catches unneutralized script tags before release.

A.8.25 Secure development life cycle partial match
prevents

Secure SDLC mandates input validation and output encoding that directly prevent basic XSS.

A.8.26 Application security requirements partial match
prevents

Application security requirements explicitly call for neutralization of script-related HTML tags.

A.8.28 Secure coding partial match
prevents

Secure coding standards require proper escaping of <, >, & to block XSS.

A.8.23 Web filtering none match
none

Web filtering can block some reflected XSS payloads at the network edge.

References