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Apache HTTP Server: heap flaw in mod_charset_lite

A bulletin published on October 1, 2026 reports an out-of-bounds write vulnerability in the mod_charset_lite module, rated low severity and affecting Apache HTTP Server versions 2.4.0 through 2.4.68.

A bulletin in the oss-sec feed, published on October 1, 2026, reports CVE-2026-56153 in Apache HTTP Server's mod_charset_lite module. The issue is described as an out-of-bounds write associated with the finish_partial_char function, with the potential for a heap overflow. The stated severity is low.

According to the notice, Apache HTTP Server versions 2.4.0 through 2.4.68 are affected. The publication credits two individuals with the discovery; their names are not reproduced here. The supplied text does not detail exploitation conditions or identify a fixed version.

To assess exposure, identify the version in use and check whether mod_charset_lite is enabled. Compare the details with Apache's official security notice, consulting the CVE-2026-56153 entry and verifying its scope, severity, and remediation guidance. Do not assume a particular update resolves the issue without confirmation in the notice.

If using AI to study or apply the bulletin, share only necessary excerpts and remove names, addresses, credentials, and internal infrastructure details. To verify the facts, consult Apache's official security record and the original oss-sec post; check the date, affected version range, and any notice updates.

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