CVE-2023-34939 json
Onlyoffice Community Server before v12.5.2 was discovered to contain a remote code execution (RCE) vulnerability via the component UploadPr…
published 2023-06-22 3 y ago modified 2026-06-17 4 mo ago also EUVD-2023-38978
- cvss
- 9.8
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 5.0%
- EPSS 5.0% chance of exploitation in 30 days, percentile 92%
- public exploits
- 0
- none known
Summary
Onlyoffice Community Server before v12.5.2 was discovered to contain a remote code execution (RCE) vulnerability via the component UploadProgress.ashx.
Patch / fix
- onlyoffice onlyoffice 12.5.2
CISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- yes
- Technical impact
- total
- Assessed
- 23 mo ago
Exploit prediction
5.03% chance of exploitation in the next 30 days, higher than 92% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- github.com https://github.com/firsov/onlyoffice referenced PoC, tagged "exploit" by a source, unverified
- github.com https://github.com/firsov/onlyoffice/blob/main/CVE-2023-34939-PoC.md referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
Classification
- Weakness
-
- CWE-22 Improper Limitation of a Pathname to a Restricted Directory
References
-
github.com
/firsov/onlyoffice
exploit
-
github.com
/firsov/onlyoffice/blob/main/CVE-2023-34939-PoC.md
exploit, third-party-advisory
-
github.com
/ONLYOFFICE/CommunityServer/blob/master/CHANGELOG.md#version-1252
release-notes
Sources
- CVE List CVE-2023-34939
- NVD CVE-2023-34939
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