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Vulnerability record · CVE-2023-30187 · published 14 August 2023

CVE-2023-30187: Onlyoffice document server out-of-bounds write vulnerability

Onlyoffice · Document Server

An out of bounds memory access vulnerability in ONLYOFFICE DocumentServer 4.0.3 through 7.3.2 allows remote attackers to run arbitrary code via crafted JavaScript file.

9.8 CVSS 3.1 Critical EPSS 2.4% · top 16.9% CWE-787 · Out-of-bounds write
9.8CVSS 3.1 base score
2.4%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
10References, 2 tagged exploit
9 Jul 2026Last modified by NVD

Description

An out of bounds memory access vulnerability in ONLYOFFICE DocumentServer 4.0.3 through 7.3.2 allows remote attackers to run arbitrary code via crafted JavaScript file.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://gist.github.com/merrychap/25eba8c4dd97c9e545edad1b8f0eadc2 ExploitPatchThird Party Advisory
https://github.com/ONLYOFFICE/DocumentServer Product
https://github.com/ONLYOFFICE/core/blob/8ca40a44ce47a86168327a46db91253cf6bb205d/DesktopEditor/doctrenderer/ Product
https://github.com/ONLYOFFICE/core/blob/8ca40a44ce47a86168327a46db91253cf6bb205d/DesktopEditor/doctrenderer/embed/Native Not Applicable
https://github.com/ONLYOFFICE/core/commit/2b6ad83b36afd9845085b536969d366d1d61150a PatchVendor Advisory
https://gist.github.com/merrychap/25eba8c4dd97c9e545edad1b8f0eadc2 ExploitPatchThird Party Advisory
https://github.com/ONLYOFFICE/DocumentServer Product
https://github.com/ONLYOFFICE/core/blob/8ca40a44ce47a86168327a46db91253cf6bb205d/DesktopEditor/doctrenderer/ Product
https://github.com/ONLYOFFICE/core/blob/8ca40a44ce47a86168327a46db91253cf6bb205d/DesktopEditor/doctrenderer/embed/Native Not Applicable
https://github.com/ONLYOFFICE/core/commit/2b6ad83b36afd9845085b536969d366d1d61150a PatchVendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2023-30186Onlyoffice document server use after free vulnerabilityA use after free issue discovered in ONLYOFFICE DocumentServer 4.0.3 through 7.3.2 allows remote attackers to run arbitrary code via crafted JavaScri…EPSS 2.3%9.8CVE-2022-29776Onlyoffice core out-of-bounds write vulnerabilityOnlyoffice Document Server v6.0.0 and below and Core 6.1.0.26 and below were discovered to contain a stack overflow via the component DesktopEditor/c…EPSS 6.9%9.8CVE-2022-29777Onlyoffice core out-of-bounds write vulnerabilityOnlyoffice Document Server v6.0.0 and below and Core 6.1.0.26 and below were discovered to contain a heap overflow via the component DesktopEditor/fo…EPSS 6.9%9.8CVE-2021-25830Onlyoffice document server vulnerabilityA file extension handling issue was found in [core] module of ONLYOFFICE DocumentServer v4.2.0.236-v5.6.4.13. An attacker must request the conversion…EPSS 12%9.8CVE-2021-25831Onlyoffice document server vulnerabilityA file extension handling issue was found in [core] module of ONLYOFFICE DocumentServer v4.0.0-9-v5.6.3. An attacker must request the conversion of t…EPSS 12%9.8CVE-2021-25832Onlyoffice document server out-of-bounds write vulnerabilityA heap buffer overflow vulnerability inside of BMP image processing was found at [core] module of ONLYOFFICE DocumentServer v4.0.0-9-v6.0.0. Using th…EPSS 13%9.8CVE-2021-25833Onlyoffice document server path traversal vulnerabilityA file extension handling issue was found in [server] module of ONLYOFFICE DocumentServer v4.2.0.71-v5.6.0.21. The file extension is controlled by an…EPSS 44%9.8CVE-2021-3199Onlyoffice document server path traversal vulnerabilityDirectory traversal with remote code execution can occur in /upload in ONLYOFFICE Document Server before 5.6.3, when JWT is used, via a /.. sequence …EPSS 8.2%

Source: NIST National Vulnerability Database (record CVE-2023-30187), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.