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CVE-2026-34355 is a buffer overflow in the mod_proxy_html module of Apache HTTP Server affecting versions 2.4.0 through 2.4.67. Processing crafted content supplied by an untrusted backend can trigger memory corruption and crash the Apache process. The vulnerability is also described as permitting a security bypass, although the bypass mechanism is unspecified. Apache HTTP Server 2.4.68 fixes the issue.
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No public exploit code observed for this vulnerability.
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27 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A buffer overflow in Apache HTTP Server's mod_proxy_html module permits attacks from an untrusted backend. The advisory rates it High, with a CVSS v3 score of 7.5 and an availability impact. Fixes are available in upstream version 2.4.68 and the referenced apache2 package version 2.4.67-1~deb11u3 or later.
A vulnerability addressed by the EulerOS SA-2026-3781 update; the content does not describe its technical flaw type.
A vulnerability addressed by Huawei EulerOS Security Advisory SA-2026-3806; the content provides no technical flaw description.
A vulnerability affecting Oracle Essbase referenced in the August 2026 Critical Patch Update plugin.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.