What is CVE-2021-46875?

CVE-2021-46875 is a medium-severity vulnerability in Ibexa Ez Platform Kernel, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2023-03-12.

How severe is CVE-2021-46875?

Medium severity. CVSS v3 base score is 6.1 out of 10.

Is CVE-2021-46875 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

XSS in Ibexa Ez Platform Kernel

CVE-2021-46875

An issue was discovered in eZ Platform Ibexa Kernel before 1.3.1.1. An XSS attack can occur because JavaScript code can be uploaded in a .html or .js file.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2023-03-12 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.004 (31.4th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 31st percentile — 31.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000

Affected products

Ibexa Ez Platform Kernel

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

Public proof-of-concept exploits

ARPSyndicate/cve-scores

References

github.com/ezsystems/ezpublish-kernel/commit/29fecd2afe86f763510f10c02f14962d02… (Patch)
github.com/ezsystems/ezpublish-kernel/security/advisories/GHSA-mrvj-7q4f-5p42 (Patch, Vendor Advisory)

Frequently asked questions

What is CVE-2021-46875?: CVE-2021-46875 is a medium-severity vulnerability in Ibexa Ez Platform Kernel, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2023-03-12.
How severe is CVE-2021-46875?: Medium severity. CVSS v3 base score is 6.1 out of 10.
Is CVE-2021-46875 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.