{"version":"https://jsonfeed.org/version/1.1","title":"Patchfirst: XStream vulnerabilities","home_page_url":"https://patchfirst.co/vendor/xstream/","feed_url":"https://patchfirst.co/feed/vendor/xstream.json","description":"New and newly exploited XStream CVEs, with CISA KEV, EPSS and ATT&CK context. Newest 50 by publication or KEV listing.","language":"en-GB","items":[{"id":"CVE-2021-39144#kev","url":"https://patchfirst.co/cve/CVE-2021-39144/","title":"[KEV] CVE-2021-39144: XStream Remote Code Execution Vulnerability","content_text":"XStream · XStream. In CISA KEV since 2023-03-10. ENISA EUVD lists it as exploited. EPSS 98.1% (higher than 99.91% of CVEs). CVSS 8.5 HIGH. Public exploit code exists. ATT&CK: T1190 Exploit Public-Facing Application. Priority 68.9 of 100.","summary":"XStream Remote Code Execution Vulnerability","date_published":"2023-03-10T00:00:00.000Z","date_modified":"2026-06-17T04:03:09.000Z","tags":["kev","public-exploit","T1190"],"_patchfirst":{"reason":"kev","priority":68.9,"kev":{"dateAdded":"2023-03-10","ransomware":false},"epss":{"score":0.98124,"percentile":0.99912},"cvss":{"score":8.5,"severity":"HIGH","version":"3.1"},"vendor":"XStream","product":"XStream","techniqueIds":["T1190"],"reportCount":0,"hasPublicExploit":true,"euvdExploited":true}},{"id":"CVE-2019-10173","url":"https://patchfirst.co/cve/CVE-2019-10173/","title":"CVE-2019-10173: It was found that xstream API version 1.4.10 before 1.4.11 introduced a regression for a previous deserialization flaw","content_text":"xstream · xstream. Not in CISA KEV. EPSS 95.0% (higher than 99.86% of CVEs). CVSS 7.3 HIGH. Priority 25.1 of 100.","summary":"It was found that xstream API version 1.4.10 before 1.4.11 introduced a regression for a previous deserialization flaw","date_published":"2019-07-23T00:00:00.000Z","date_modified":"2024-08-04T22:10:10.000Z","tags":[],"_patchfirst":{"reason":"published","priority":25.1,"kev":null,"epss":{"score":0.95036,"percentile":0.99861},"cvss":{"score":7.3,"severity":"HIGH","version":"3.0"},"vendor":"xstream","product":"xstream","techniqueIds":[],"reportCount":0,"hasPublicExploit":false,"euvdExploited":false}}]}