Critical severity9.8NVD Advisory· Published Jun 22, 2023· Updated Jun 17, 2026

CVE-2023-34939

Description

Onlyoffice Community Server before v12.5.2 was discovered to contain a remote code execution (RCE) vulnerability via the component UploadProgress.ashx.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

ONLYOFFICE/ONLYOFFICE
cpe:2.3:a:onlyoffice:onlyoffice:*:*:*:*:community_server:*:*:*
Range: <12.5.2
ONLYOFFICE/Community Servercpe-rescue2 versions
(expand)+ 1 more
- (no CPE)
- (no CPE)range: <12.5.2

Patches

Vulnerability mechanics

References

github.com/firsov/onlyoffice/blob/main/CVE-2023-34939-PoC.mdnvdExploitThird Party Advisory
github.com/ONLYOFFICE/CommunityServer/blob/master/CHANGELOG.mdnvdRelease Notes

News mentions

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cvss	0.637
epss	0.004
exploit	0.000
kev	0.000
patch	0.000
ransomware	0.000