Skip to content
Noroxi
CVE-2024-58321· NVD / CVE Program· CNA VulnCheck

Kentico Xperience <= 13.0.159 Form Validation Stored XSS

A stored cross-site scripting vulnerability in Kentico Xperience allows attackers to inject malicious scripts via form validation rule configuration. Attackers can exploit this vulnerability to execute malicious scripts that will run in users' browsers.

MediumCVSS 5.1 · v4.0—No exploit No fix recorded
Published
Dec 18, 2025
Updated
Jun 17, 2026
EPSS
0.2% · 5th percentile
Follow this CVE

Sign in to follow · You’ll be notified if a followed record enters KEV, gets an exploit or is updated.

Report tools

JSON

Action score

20

Monitor

Low priority for now.

CVSS
20 / 40 · 5.1 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.2%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
—
CNA · VulnCheck
5.1
NVD has not scored this yet; the score shown is the CNA’s.

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Affected systems

VendorProduct
kenticoxperience

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • kentico xperienceup to 13.0.159 inclusive

Versions reported by the vendor

Affected version ranges reported by the assigning authority (VulnCheck). Independent of NVD's CPE analysis and usually ahead of it.

  • Kentico Xperience

    • up to and including 13.0.159affected

Same product

kentico: all records

Other highest-scoring records for the same primary product.

  • CVE-2025-2747Kentico Xperience <= 13.0.178 Staging Sync Server None Password Type Authentication BypassKEV
    98Now
  • CVE-2019-10068An issue was discovered in Kentico 12.0.x before 12.0.15, 11.0.x before 11.0.48, 10.0.x before 10.0.52, and 9.x versions.KEV
    98Now
  • CVE-2025-2746Kentico Xperience <= 13.0.172 Staging Sync Server Digest Password Authentication BypassKEV
    91Now
  • CVE-2017-17736Kentico 9.0 before 9.0.51 and 10.0 before 10.0.48 allows remote attackers to obtain Global Administrator access by visiting CMSInstall/insta
    60This week
  • CVE-2025-2749Kentico Xperience <= 13.0.178 Staging Media File Upload Authenticated RCEKEV
    59Plan
  • CVE-2025-2748Kentico Xperience stored cross-site scripting in multiple-file upload functionality
    42Plan

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

No fix version is recorded for this entry. Check the references for vendor advisories.

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

  • CVE-2025-2748269 days apartKentico Xperience stored cross-site scripting in multiple-file upload functionality
    42Plan
  • CVE-2025-559117 days apartStored Cross-site Scripting (XSS) in Kentico Xperience 13
    30Monitor
  • CVE-2025-32369256 days apartKentico Xperience before 13.0.181 allows authenticated users to distribute malicious content (for stored XSS) via certain interactions with
    21Monitor
  • CVE-2020-368890 days apartKentico Xperience <= 12.0.90 Administration Interface Stored XSS
    20Monitor
  • CVE-2020-368910 days apartKentico Xperience <= 12.0.49 File Upload Stored XSS
    20Monitor
  • CVE-2023-537360 days apartKentico Xperience <= 13.0.120 Administration Interface Reflected XSS
    20Monitor

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • A low-privileged account is enough.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
Integrity
Availability
Attack vector
Network
Attack complexity
Low
Privileges required
Low
User interaction
P
Scope
X

Weakness class (CWE)

CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/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

nvd-secondary

Root cause

User content is inserted into the page as HTML. The browser interprets the content as code rather than data.

The bug in code

The whole CWE-79 class

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

Vulnerable

ts
commentEl.innerHTML = comment.body;

Fixed

ts
commentEl.textContent = comment.body;

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

ATT&CK techniques

—

Noroxi analysis

No Noroxi analysis for this record yet

We don't hand-write analysis for all 385,000+ vulnerabilities; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.

We use this product, ask for help

Change log

No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.

References

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records