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CVE-2026-34356

Apache HTTP Server: ProxyPassReverseCookieMap buffer overflow

Published: Jun 8, 2026Updated: Jun 8, 2026 Sources: CVE List NVD
NVD MITRE
7.5CVSS
HIGH

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.

EPSS Score
N/A
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
No Fix Available

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:NI:NA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:HAvailability
High

Weaknesses

CWE-122

Affected Products

Apache HTTP Server
Apache Software Foundation

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.

MITRE ATT&CK

1 technique
Privilege Escalation
View detailed technique mapping

References

https://httpd.apache.org/security/vulnerabilities_24.html
httpd.apache.org
http://www.openwall.com/lists/oss-security/2026/06/08/7
openwall.com

Timeline

Published
Jun 8, 2026
Last Updated
Jun 8, 2026
News mentions
1

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