CVE-2023-30186
Critical · CVSS 9.8ONLYOFFICE DocumentServer — Use After Free (UAF) Remote Code Execution via crafted JavaScript
- CVSS
- 9.8
- nvd
- EPSS
- —
- KEV
- No
- Class
- oss containerizable
- CWE-416
Description
A use after free issue discovered in ONLYOFFICE DocumentServer 4.0.3 through 7.3.2 allows remote attackers to run arbitrary code via crafted JavaScript file.
Search profile — drives PoC discovery
Symbols NativeControlEmbed.cppNativeControlEmbeddoctrendererDesktopEditor/doctrendererDesktopEditor/doctrenderer/embedNativeControlEmbed.cpp#L1102b6ad83b36afd9845085b536969d366d1d61150a
Keywords CVE-2023-30186ONLYOFFICE DocumentServer use after freeONLYOFFICE UAF RCEONLYOFFICE DocumentServer JavaScript exploitNativeControlEmbed use after freedoctrenderer exploitONLYOFFICE 7.3.2 vulnerabilitymerrychap ONLYOFFICE
Versions: 4.0.3 through 7.3.2
Ranked PoCs (2) — best first
Heuristic ranking — not yet expert-vetted. Scored on structure + provenance, not execution.
- ★ 0konatabrk/POC-onlyoffice needs reviewtrickest
- ★ 0merrychap/POC-onlyoffice needs reviewtrickest
Recall-favoring discovery; ranking by the Stage-4 scorer (Adam's rubric). Scanner/aggregator repos are hidden.
References
- https://gist.github.com/merrychap/25eba8c4dd97c9e545edad1b8f0eadc2
- https://github.com/ONLYOFFICE/DocumentServer
- https://github.com/ONLYOFFICE/core/blob/8ca40a44ce47a86168327a46db91253cf6bb205d/DesktopEditor/doctrenderer/
- https://github.com/ONLYOFFICE/core/blob/8ca40a44ce47a86168327a46db91253cf6bb205d/DesktopEditor/doctrenderer/embed/NativeControlEmbed.cpp#L110
- https://github.com/ONLYOFFICE/core/commit/2b6ad83b36afd9845085b536969d366d1d61150a
- http://onlyoffice.com
- https://gist.github.com/merrychap/25eba8c4dd97c9e545edad1b8f0eadc2
- https://github.com/ONLYOFFICE/DocumentServer
- https://github.com/ONLYOFFICE/core/blob/8ca40a44ce47a86168327a46db91253cf6bb205d/DesktopEditor/doctrenderer/
- https://github.com/ONLYOFFICE/core/blob/8ca40a44ce47a86168327a46db91253cf6bb205d/DesktopEditor/doctrenderer/embed/NativeControlEmbed.cpp#L110
- https://github.com/ONLYOFFICE/core/commit/2b6ad83b36afd9845085b536969d366d1d61150a
Status: enriched · ingested 2026-07-05T06:00:39.000Z · profiled 2026-07-05T18:30:39.000Z