Vulnerability intelligence
CVE-2026-34356
Heap-based Buffer Overflow vulnerability in Apache HTTP Server with malicious backend servers and ProxyPassReverseCookie* This issue affects Apache HTTP Server: from 2.4.0 through 2.4.67. Users are recommended to upgrade to version 2.4.68, which fixes the issue.
CVSS Score
7.5
High
EPSS — Exploit Probability
0.2%
Riskier than 41% of all CVEs
Exploitation
Not in CISA KEV
No federal exploitation record
Remediation
unknown
Check vendor advisories
1 article across 1 outlet · first covered Jun 9, 2026 · latest Jun 9, 2026
Coverage timeline
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Apache HTTP Server 2.4.68 fixes critical bugs to protect systemssecurityonline.info · Jun 9, 2026