Cyber Resilience

CVE-2023-53934

Kentico Xperience ≤ 12.0.98

Public PoC
Published
18 December 2025
Modified
24 December 2025
Patch / advisory
View advisory
CVSS Score v4 8.7
Click a component to see what it means
Raw vectorCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
EPSS Score 0.0038 31th percentile
Risk Priority 44 floored blend · peak EPSS

Summary

CVE-2023-53934 is a high-severity Improper Neutralization of Server-Side Includes (SSI) Within a Web Page (CWE-97) vulnerability in Kentico Xperience. Its CVSS base score is 8.7 (High).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked at the 31th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.

The strongest mitigations our analysis identified map to SI-10 (Information Input Validation) and SA-8 (Security and Privacy Engineering Principles) — see the control section below for these in your framework.

OWASP Top 10 for Web (2025)

A05:2025 Injection

EU & UK References

Vulnerability Data

A denial of service vulnerability in Kentico Xperience allows attackers to launch DoS attacks via specially crafted requests to the GetResource handler. Improper input validation enables remote attackers to potentially disrupt service availability through maliciously constructed requests.

CWE(s)
CWE-97

Related Threats

MITRE ATT&CK Enterprise Techniques

T1190 Exploit Public-Facing Application Initial Access
Adversaries may attempt to exploit a weakness in an Internet-facing host or system to initially access a network.
attack.mitre.org →
Derived from this CVE’s CWE(s) via the direct CWE→ATT&CK cross-walk.

CVEs Like This One

CVE-2017-17736Same product: Kentico Xperience
CVE-2019-10068Same product: Kentico Xperience
CVE-2025-2746Same product: Kentico Xperience
CVE-2025-2747Same product: Kentico Xperience
CVE-2024-58318Same product: Kentico Xperience
CVE-2023-53737Same product: Kentico Xperience
CVE-2024-58319Same product: Kentico Xperience
CVE-2023-53736Same product: Kentico Xperience
CVE-2025-2749Same product: Kentico Xperience
CVE-2024-58322Same product: Kentico Xperience

Affected Assets

kentico
xperience
≤ 12.0.98

Mitigating Controls

Mitigating Controls (NIST 800-53 r5) AI

SI-10 Information Input Validation good match

Input validation directly stops untrusted data from being interpreted as SSI directives during page generation.

SA-8 Security and Privacy Engineering Principles partial match

Engineering principles require proper input neutralization to avoid injection of server-side directives.

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 input neutralization to block SSI injection.

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
finds

Security testing can detect SSI flaws but does not itself implement the neutralization controls.

A.8.25 Secure development life cycle partial match
prevents

Secure SDLC mandates input validation and output encoding that directly prevent SSI injection.

A.8.26 Application security requirements partial match
prevents

Application security requirements include rules for neutralizing server-side directives in user input.

A.8.27 Secure system architecture and engineering principles partial match
prevents

Secure architecture principles reduce the attack surface for SSI but do not prescribe specific neutralization techniques.

A.8.28 Secure coding partial match
prevents

Secure coding standards explicitly require escaping or disabling SSI constructs in dynamic web content.

References