CVE-2023-34939
Onlyoffice Community Server before v12.5.2 was discovered to contain a remote code execution (RCE...
Onlyoffice Community Server before v12.5.2 was discovered to contain a remote code execution (RCE) vulnerability via the component UploadProgress.ashx.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
Onlyoffice Community Server before v12.5.2 was discovered to contain a remote code execution (RCE) vulnerability via the component UploadProgress.ashx.
- Record
CVE-2023-34939- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-22
- Updated
- 2026-11-02
CVE List No score
Onlyoffice Community Server before v12.5.2 was discovered to contain a remote code execution (RCE) vulnerability via the component UploadProgress.ashx.
- Record
CVE-2023-34939- Updated
- 2026-11-02
EUVDEUVD-2023-38978 No score
Onlyoffice Community Server before v12.5.2 was discovered to contain a remote code execution (RCE) vulnerability via the component UploadProgress.ashx.
- Record
EUVD-2023-38978- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-8rx2-c38v-6hm8
Onlyoffice Community Server before v12.5.2 was discovered to contain a remote code execution (RCE...
Onlyoffice Community Server before v12.5.2 was discovered to contain a remote code execution (RCE) vulnerability via the component UploadProgress.ashx.
- Record
GHSA-8rx2-c38v-6hm8- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-22
- Updated
- 2026-11-02
OSV No score
Onlyoffice Community Server before v12.5.2 was discovered to contain a remote code execution (RCE) vulnerability via the component UploadProgress.ashx.
- Record
CVE-2023-34939- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2023-34939 is a critical vulnerability (CVSS 9.8) in Onlyoffice, published June 22, 2023. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 5.03%, the 92nd percentile. No source names a fixed version.
References
github.com/firsov/onlyoffice
nvd.nist.gov/vuln/detail/CVE-2023-34939