CVE-2026-33857
Analyzed Analyzed - Analysis Complete
Out-of-bounds Read in Apache HTTP Server mod_proxy_ajp

Publication date: 2026-05-04

Last updated on: 2026-05-04

Assigner: Apache Software Foundation

Description
Out-of-bounds Read vulnerability in mod_proxy_ajp of Apache HTTP Server. This issue affects Apache HTTP Server: through 2.4.66. Users are recommended to upgrade to version 2.4.67, which fixes the issue.
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Meta Information
Published
2026-05-04
Last Modified
2026-05-04
Generated
2026-06-16
AI Q&A
2026-05-05
EPSS Evaluated
2026-06-15
NVD
CVE-2026-33857
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
apache http_server to 2.4.67 (exc)
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Exploitability
CWE
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KEV
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CWE ID Description
CWE-125 The product reads data past the end, or before the beginning, of the intended buffer.
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Executive Summary

This vulnerability is an out-of-bounds read issue in the mod_proxy_ajp module of the Apache HTTP Server. It affects versions up to 2.4.66 and allows reading memory outside the intended buffer boundaries.

Impact Analysis

The vulnerability can lead to unauthorized disclosure of information because it allows reading data beyond the intended memory area. However, it does not affect integrity or availability.

Mitigation Strategies

Users are recommended to upgrade Apache HTTP Server to version 2.4.67, which fixes the out-of-bounds read vulnerability in mod_proxy_ajp.

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