CVE-2023-26431

MEDIUM
4.3
CVSS Score
Published: June 20, 2023 at 07:51 AM UTC
Updated: June 17, 2026 at 05:43 AM UTC
2 products affected across 2 vendorsOpen Xchange Appsuite BackendOX App Suite

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Severity
MEDIUM4.3
Exploit prediction
EPSS 0.8%

Description

IPv4-mapped IPv6 addresses did not get recognized as "local" by the code and a connection attempt is made. Attackers with access to user accounts could use this to bypass existing deny-list functionality and trigger requests to restricted network infrastructure to gain insight about topology and running services. We now respect possible IPV4-mapped IPv6 addresses when checking if contained in a deny-list. No publicly available exploits are known.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 7.10.68.0.0 ≤ v < 8.11.07.10.67.10.6 revision_39
Affected range stops below 7.10.6, so it looks safe — our inference, not a vendor statement
Affected range stops below 8.11.0, so it looks safe — our inference, not a vendor statement
v ≤ 7.10.6-rev39v ≤ 8.10

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
LOW
Integrity
NONE
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-918

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