Onlyoffice Community Server before v12.5.2 was discovered to contain a remote code…
Priority HIGH 82CWE-22Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA.
Summary
Onlyoffice Community Server before v12.5.2 was discovered to contain a remote code execution (RCE) vulnerability via the component UploadProgress.ashx.
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.05033 92nd percentileScored 2026-11-07
Public exploit Yes 2 exploit referencesTagged by NVD
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- Yes
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:onlyoffice:onlyoffice:*:*:*:*:community_server:*:*:* | before 12.5.2 | Vulnerable | ONLYOFFICE |
- cpe:2.3:a:onlyoffice:onlyoffice:*:*:*:*:community_server:*:*:* Versions before 12.5.2 Vulnerable ·ONLYOFFICE
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2023-34939
- 2026-10-03 Alias added: GHSA-8rx2-c38v-6hm8
References
More Onlyoffice vulnerabilities
- TI-2024-29666 ONLYOFFICE Docs before 8.1.0 allows XSS via a GeneratorFunction Object attack against a… CVSS 3.1MEDIUM 6.1
Sources
- CVE-2023-34939 · CVE Program
- CVE-2023-34939 · NVD
- FIRST EPSS
- GHSA-8rx2-c38v-6hm8 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences