CVE-2023-26513: Apache Sling Resource Merger: Requests to certain paths managed by the Apache Sling Resource Merger can lead to DoS

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.5% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2023-03-20 · updated 2026-06-17
Weakness: CWE-834

Description

Excessive Iteration vulnerability in Apache Software Foundation Apache Sling Resource Merger.This issue affects Apache Sling Resource Merger: from 1.2.0 before 1.4.2.

Affected products

Apache Software Foundation Apache Sling Resource Merger: from 1.2.0 before 1.4.2 — fixed in 1.4.2

How to fix

Upgrade to a fixed version: Apache Software Foundation Apache Sling Resource Merger 1.4.2. Check the vendor advisory for mitigations.

References

https://lists.apache.org/thread/xpcpo1y88ldss5hgmvogsf6h3735l5zb
https://lists.apache.org/thread/xpcpo1y88ldss5hgmvogsf6h3735l5zb

Get alerted when CVE-2023-26513 or the next vulnerability affects your stack