{"affected":[{"defaultStatus":"unaffected","product":"REMS","source":"CNA: VulnCheck","vendor":"OpsTree Solutions","versions":[{"lessThanOrEqual":"1.0.0","status":"affected","version":"0","versionType":"custom"}]}],"cveId":"CVE-2026-126771","cwes":["CWE-79"],"description":"OpsTree REMS through 1.0.0 contains a stored cross-site scripting vulnerability that allows authenticated attackers to inject scripts by uploading attachments with spoofed text/html Content-Type. Attackers can upload HTML files named like test.html.pdf that render in the REMS origin via Preview, executing JavaScript in victims' browsers.","epss":null,"exploits":[{"kind":"exploit","source":"CNA: VulnCheck","url":"https://gist.github.com/neelkotnis/ddf75e2cb7192180e6c9618d27d1e99b"}],"kev":null,"metrics":[{"score":5.1,"severity":"medium","source":"CNA: VulnCheck","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N","version":"4.0"},{"score":5.4,"severity":"medium","source":"CNA: VulnCheck","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","version":"3.1"}],"modifiedAt":1794420677246,"publishedAt":1794420677246,"references":[{"source":"CNA: VulnCheck","tags":["technical-description","exploit"],"url":"https://gist.github.com/neelkotnis/ddf75e2cb7192180e6c9618d27d1e99b"},{"source":"CNA: VulnCheck","tags":["product"],"url":"https://opstree.com/rems-ai-powered-observability/"},{"source":"CNA: VulnCheck","tags":["third-party-advisory"],"url":"https://www.vulncheck.com/advisories/opstree-rems-through-1.0.0-stored-xss-via-attachment-upload-and-preview"}],"remediation":[],"revision":"4fa0ab8b93e8cc7e6fddf6e41c461a683e102842fb04a9f7851416a8d077e34d","sources":[{"modifiedAt":1794420677246,"name":"CNA: VulnCheck","retrievedAt":1794424129903,"url":"https://www.cve.org/CVERecord?id=CVE-2026-126771"}],"ssvc":null,"status":"published","title":"OpsTree REMS through 1.0.0 Stored XSS via Attachment Upload and Preview","updatedAt":1794424129903}