CVE-2023-26431

mediumpriority · track · 17EPSS 0.008 · 58 %ileEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

0.84% (58th) EPSS

CVSS 4.3 · medium

Is it mine?

5 products

Check your exposure

Who says so?

3 sources

cnnvd · enisa_euvd · nvd

EPSS · scored 2026-10-28

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.

cvss

Technical severity, 0–10. One row per scoring source.

5.0

010

base score 0–10 · higher = more severe · hover a vector to decode

v3.14.3mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:Nprimary · NVD / NIST USexploitability 2.8 · impact 1.4

v3.15mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:Nsecondary · ENISA EU

v3.15mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:Nsecondary · security@open-xchange.comexploitability 3.1 · impact 1.4

v3.14mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-918USprimary

affected products (5)

Products and version ranges known to be affected.

OX Software GmbH OX App Suite≤ 0 ≤7.10.6-rev39enisa_euvdEU
OX Software GmbH OX App Suite≤ 0 ≤8.10enisa_euvdEU
open-xchange open-xchange appsuite backend< 7.10.6nvdUScpe:2.3:a:open-xchange:open-xchange_appsuite_backend:*:*:*:*:*:*:*:*
open-xchange open-xchange appsuite backend= 7.10.6nvdUScpe:2.3:a:open-xchange:open-xchange_appsuite_backend:*:*:*:*:*:*:*:*
open-xchange open-xchange appsuite backend8.0.0 → 8.11.0nvdUScpe:2.3:a:open-xchange:open-xchange_appsuite_backend:*:*:*:*:*:*:*:*

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd nvd NVD CVE.org MITRE

published 2023-06-20modified 2026-06-17

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+4182 more

references (15)

External citations — patches, advisories, analysis.

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