How severe is CVE-2023-26513?

CVE-2023-26513 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2023-26513 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (71st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-26513?

CVE-2023-26513 affects Apache Sling Resource Merger. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-26513?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2023-26513 published?

CVE-2023-26513 was published on 2023-03-20 and last updated on 2026-06-17.

CVE-2023-26513

CVE-2023-26513 is a high-severity vulnerability in Apache Sling Resource Merger with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-834.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 1% (71st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-834
Affected product: Apache Sling Resource Merger
Published: 2023-03-20
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2023-26513?: 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.
How severe is CVE-2023-26513?: CVE-2023-26513 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2023-26513 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (71st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-26513?: CVE-2023-26513 affects Apache Sling Resource Merger. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-26513?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2023-26513 published?: CVE-2023-26513 was published on 2023-03-20 and last updated on 2026-06-17.

References

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

Affected products (1)

cpe:2.3:a:apache:sling_resource_merger:*:*:*:*:*:*:*:*

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