CVE-2026-126771: medium-severity vulnerability in OpsTree Solutions REMS
OpsTree REMS through 1.0.0 Stored XSS via Attachment Upload and Preview
Published · Updated
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
33Vexday Risk Score
No sign of exploitation. It has a public proof of concept.
ssvc Attendcvss 5.1epss 0.3%
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.
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
Affected products
OpsTree Solutions · REMSpublic PoCs found — 1
cve_referencegist.github.com/neelkotnis/ddf75e2cb7192180e6c9618d27d1e99bunverified⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.
Related CVEs — OpsTree Solutions REMS
In the same product, most dangerous first.
CVE-2026-126768CRITICALOpsTree REMS through 1.0.0 Authentication Bypass via is_local_auth FlagEPSS 0.8%CVE-2026-126769HIGHOpsTree REMS through 1.0.0 Missing Authentication via /api/v1/databases Governance APIEPSS 0.7%CVE-2026-126767MEDIUMOpsTree REMS through 1.0.0 Prompt Injection via RCA Chat AssistantEPSS 0.3%CVE-2026-126770MEDIUMOpsTree REMS through 1.0.0 SSRF via Database Test ConnectionEPSS 0.3%CVE-2026-126772MEDIUMOpsTree REMS through 1.0.0 Comment Author Spoofing via Incident Comment APIEPSS 0.3%CVE-2026-126766MEDIUMOpsTree REMS through 1.0.0 Reporter Spoofing via /api/v1/incidentsEPSS 0.3%