CVE-2026-34355

VendorapacheProducthttp serverDiscoveredJun 8, 2026UpdatedSep 14, 2026

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.

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CVSS v3.1

7.5 HIGH

EPSS

1.16%

probability of exploitation in 30 days

CISA KEV

Not listed

no confirmed exploitation reported

News coverage

sources referencing this CVE

Related IOCs

seen in the same coverage

EPSS Trend

Aug 16, 2026 → Oct 22, 2026

▲ 0.04pp

1.12% → 1.16% over 4 tracked changes

CVSS v3.1 Detail

Attack VectorNETWORK

Attack ComplexityLOW

Privileges RequiredNONE

User InteractionNONE

ScopeUNCHANGED

ConfidentialityNONE

IntegrityNONE

AvailabilityHIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Connections

5 relationships

Timeline

disclosure → media coverage

Jun 8, 2026

Disclosure — published as a CVE record. · last revised by NVD Sep 14, 2026

Jul 8, 2026

ubuntu.com reports: USN-8516-1: Apache HTTP Server vulnerabilities

Sep 10, 2026

ubuntu.com reports: USN-8571-2: Apache HTTP Server regression