<?xml version="1.0" encoding="UTF-8"?><rss version="2.0" xmlns:atom="http://www.w3.org/2005/Atom"><channel><title>Patchfirst: ONLYOFFICE vulnerabilities</title><link>https://patchfirst.co/vendor/onlyoffice/</link><atom:link href="https://patchfirst.co/feed/vendor/onlyoffice.xml" rel="self" type="application/rss+xml"/><description>New and newly exploited ONLYOFFICE CVEs, with CISA KEV, EPSS and ATT&amp;CK context. Newest 50 by publication or KEV listing.</description><language>en-gb</language><ttl>360</ttl><lastBuildDate>Sat, 31 Oct 2026 05:11:25 GMT</lastBuildDate><item><title>[KEV] CVE-2021-3199: ONLYOFFICE Docs Server Path Traversal Vulnerability</title><link>https://patchfirst.co/cve/CVE-2021-3199/</link><guid isPermaLink="false">CVE-2021-3199#kev</guid><pubDate>Thu, 08 Oct 2026 00:00:00 GMT</pubDate><description>ONLYOFFICE · Docs. In CISA KEV since 2026-10-08. ENISA EUVD lists it as exploited. EPSS 30.2% (higher than 98.2% of CVEs). CVSS 9.8 CRITICAL. Public exploit code exists. ATT&amp;CK: T1190 Exploit Public-Facing Application; T1059 Command and Scripting Interpreter. Priority 79.5 of 100.</description><category>kev</category><category>public-exploit</category><category>T1190</category><category>T1059</category></item><item><title>CVE-2025-5301: Reflected Cross-Site Scripting in ONLYOFFICE Docs (DocumentServer)</title><link>https://patchfirst.co/cve/CVE-2025-5301/</link><guid isPermaLink="false">CVE-2025-5301</guid><pubDate>Thu, 12 Jun 2025 00:00:00 GMT</pubDate><description>OnlyOffice · Docs (DocumentServer). Not in CISA KEV. EPSS 62.4% (higher than 99.18% of CVEs). CVSS 6.1 MEDIUM. Public exploit code exists. Priority 29.1 of 100.</description><category>public-exploit</category></item></channel></rss>