CVE-2026-34355NVD

Vulnerability Summary

A buffer overflow in mod_proxy_html in Apache HTTP Server 2.4.67 and earlier allows an attack by an untrusted backend.
Users are recommended to upgrade to version 2.4.68, which fixes this issue.

Severity Level

HIGH(7.5)

Published Date

Jun 8, 2026

Last Modified

Sep 2, 2026

Exploitation Status

No confirmed exploitation yet

EPSS Score (30-Day)

2.66%Probability

Root Weakness (CWE)

CWE-122: Unknown/Unlisted Weakness ↗

Refer to the official MITRE database for detailed architectural specifications regarding this weakness.

CWE-120: Unknown/Unlisted Weakness ↗

Refer to the official MITRE database for detailed architectural specifications regarding this weakness.

CVSS v3.1 Base Metrics — Score 7.5 (HIGH)

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

ConfidentialityNone

IntegrityNone

AvailabilityHigh

Affected & Patched Versions

Affected Versions

Apache Http Server >= 2.4.0 and < 2.4.68

Patched Versions

Apache Http Server 2.4.68

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