XSS in Open-Xchange Appsuite Frontend
CVE-2023-26450
The "OX Count" web service did not specify a media-type when processing responses by external resources. Malicious script code can be executed within the victims context. This can lead to session hijacking or triggering unwanted actions via the web interface and API. To exploit this an attacker would require temporary access to the users account or lure a user to a compromised account. We are now defining the accepted media-type to avoid code execution. No publicly available exploits are known.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.007 (52.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 52nd percentile — 52.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- software.open-xchange.com/products/appsuite/doc/Release_Notes_for_Patch_Release… (release-notes, Release Notes)
- documentation.open-xchange.com/appsuite/security/advisories/csaf/2023/oxas-adv-… (vendor-advisory)
- seclists.org/fulldisclosure/2023/Aug/8 (Mailing List, Third Party Advisory)
- packetstormsecurity.com/files/173943/OX-App-Suite-SSRF-SQL-Injection-Cross-Site… (VDB Entry, Third Party Advisory)
Frequently asked questions
- What is CVE-2023-26450?
- CVE-2023-26450 is a medium-severity vulnerability in Open-Xchange Appsuite Frontend, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2023-08-02.
- How severe is CVE-2023-26450?
- Medium severity. CVSS v3 base score is 5.4 out of 10.
- Is CVE-2023-26450 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.