{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-126767","assignerOrgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","state":"PUBLISHED","assignerShortName":"VulnCheck","dateReserved":"2026-11-11T18:01:46.581Z","datePublished":"2026-11-11T18:11:14.745Z","dateUpdated":"2026-11-11T18:11:14.745Z"},"containers":{"cna":{"providerMetadata":{"orgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","shortName":"VulnCheck","dateUpdated":"2026-11-11T18:11:14.745Z"},"datePublic":"2026-09-20T00:00:00.000Z","title":"OpsTree REMS through 1.0.0 Prompt Injection via RCA Chat Assistant","descriptions":[{"lang":"en","value":"OpsTree REMS through 1.0.0 contains a prompt injection vulnerability that allows authenticated users to disclose the hidden system prompt by submitting crafted chat input to POST /api/v1/rca/chat. Attackers can instruct the assistant to ignore its rules and reveal internal orchestration instructions, aiding the crafting of further prompt injection attacks."}],"problemTypes":[{"descriptions":[{"lang":"en","description":"Improper Neutralization of Input Used for LLM Prompting","cweId":"CWE-1427","type":"CWE"}]}],"affected":[{"vendor":"OpsTree Solutions","product":"REMS","defaultStatus":"unaffected","versions":[{"version":"0","lessThanOrEqual":"1.0.0","status":"affected","versionType":"custom"}]}],"metrics":[{"format":"CVSS","cvssV4_0":{"version":"4.0","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N","attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"LOW","userInteraction":"NONE","vulnConfidentialityImpact":"LOW","vulnIntegrityImpact":"NONE","vulnAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":5.3,"baseSeverity":"MEDIUM"}},{"format":"CVSS","cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"LOW","integrityImpact":"NONE","availabilityImpact":"NONE","baseScore":4.3,"baseSeverity":"MEDIUM"}}],"references":[{"url":"https://gist.github.com/neelkotnis/548bfde3e45bc3793f3f26e1f9a43efe","tags":["technical-description","exploit"]},{"url":"https://opstree.com/rems-ai-powered-observability/","tags":["product"],"name":"REMS by OpsTree Product Page"},{"name":"VulnCheck Advisory: OpsTree REMS through 1.0.0 Prompt Injection via RCA Chat Assistant","tags":["third-party-advisory"],"url":"https://www.vulncheck.com/advisories/opstree-rems-through-1.0.0-prompt-injection-via-rca-chat-assistant"}],"credits":[{"lang":"en","value":"Neel Saurabh Kotnis","type":"finder"}],"x_generator":{"engine":"vulncheck-endgame"}}}}