What is CVE-2026-94243?

CVE-2026-94243 is a high-severity vulnerability in Apache Software Foundation Sling Security Bundle, classified under Origin Validation Error. CVSS score: 7.3/10. Published 2026-09-23.

How severe is CVE-2026-94243?

High severity. CVSS v3 base score is 7.3 out of 10.

Vulnerability in Apache Software Foundation Sling Security Bundle

CVE-2026-94243

A vulnerability in Apache Sling Security Bundle: the ReferrerFilter accepts weaker-than-orgin evidence. This issue affects Apache Sling Security Bundle: before 1.3.2. Users are recommended to upgrade to version 1.3.2, which fixes the issue.

Published 2026-09-23 · last modified 2026-09-23.

CVSS v3 metric

CVSS v3 base score 7.3 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L.

EPSS exploit prediction

EPSS: 0.001 (2.8th percentile), scored 2026-09-24.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 3rd percentile — 2.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

The 30-day trend appears once there are two daily scores.

Affected products

Apache Software Foundation Sling Security Bundle

Weakness classification (CWE)

CWE-346 — Origin Validation Error

References

lists.apache.org/thread/ohz47f6hrflsjvt9m24qz69qm5w4bwyr (vendor-advisory)
af854a3a-2127-422b-91ae-364da2661108

Frequently asked questions

What is CVE-2026-94243?: CVE-2026-94243 is a high-severity vulnerability in Apache Software Foundation Sling Security Bundle, classified under Origin Validation Error. CVSS score: 7.3/10. Published 2026-09-23.
How severe is CVE-2026-94243?: High severity. CVSS v3 base score is 7.3 out of 10.