CVE-2023-26442

SSRF via followed sproxyd HTTP redirects

Published Aug 2, 2023 · Updated Dec 3, 2024

SSRF in Cacheservice in Open-Xchange OX App Suite office 8.10 allows attackers to reach unexpected resources via sproxyd redirects. The Cacheservice HTTP client follows redirect responses from a configured sproxyd object-storage backend without constraining the redirected destination. Exploitation requires control of sproxyd or interception and replay of its HTTP traffic on a local or restricted network, exposing only resources reachable by Cacheservice.

CVSS severity3.2
Low
EPSS probability0.36%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

SSRF in Cacheservice in Open-Xchange OX App Suite office 8.10 allows attackers to reach unexpected resources via sproxyd redirects. The Cacheservice HTTP client follows redirect responses from a configured sproxyd object-storage backend without constraining the redirected destination. Exploitation requires control of sproxyd or interception and replay of its HTTP traffic on a local or restricted network, exposing only resources reachable by Cacheservice.

The record

CVE
CVE-2023-26442
Published
Aug 2, 2023
Updated
Dec 3, 2024
Vendor
Open-Xchange GmbH
Product
OX App Suite
Classifications
CWE-918, T1090.001
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 2, 2023CVE publishedPublication date reported by the CVE source.
  2. Dec 3, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=8.10

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Open-Xchange GmbH · OX App Suiteversion=0 <=8.10

Published CVSS scores

3.2Open-XchangeCVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:L/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-918Server-Side Request Forgery (SSRF)
T1090.001Proxy: Internal Proxy

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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