CVE-2023-26455 json
RMI was not requiring authentication when calling ChronosRMIService:setEventOrganizer.
published 2023-11-02 3 y ago modified 2026-06-17 4 mo ago also EUVD-2023-30275
- cvss
- 5.6
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.2%
- EPSS 0.2% chance of exploitation in 30 days, percentile 9%
- public exploits
- 0
- none known
Summary
RMI was not requiring authentication when calling ChronosRMIService:setEventOrganizer. Attackers with local or adjacent network access could abuse the RMI service to modify calendar items using RMI. RMI access is restricted to localhost by default. The interface has been updated to require authenticated requests. No publicly available exploits are known.
Patch / fix
- open-xchange open-xchange_appsuite 7.10.6
Exploit prediction
0.20% chance of exploitation in the next 30 days, higher than 9% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 5.6 | CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:H/A:L |
| NVD | 3.1 | 7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
Affected products
- OX Software GmbH OX App Suite
Classification
- Weakness
-
- CWE-287 Improper Authentication
References
Sources
- CVE List CVE-2023-26455
- NVD CVE-2023-26455
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