CVE-2026-126767
OpsTree REMS through 1.0.0 Prompt Injection via RCA Chat Assistant
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.
Fixes and workarounds
No remediation reported in collected sources.
Missing remediation information is not evidence that no patch exists.
Affected products and versions
| Product | Versions | Authority |
|---|---|---|
| REMS OpsTree Solutions |
≥ 0; ≤ 1.0.0 (affected, custom)
Other versions: unaffected |
CNA: VulnCheck |
Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.
CVSS assessments
| Version / score | Vector | Authority |
|---|---|---|
| 4.0 / 5.3 medium |
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 | CNA: VulnCheck |
| 3.1 / 4.3 medium |
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N | CNA: VulnCheck |
Exploit evidence
- https://gist.github.com/neelkotnis/548bfde3e45bc3793f3f26e1f9a43efe
exploit · CNA: VulnCheck
References
- https://gist.github.com/neelkotnis/548bfde3e45bc3793f3f26e1f9a43efeCNA: VulnCheck · technical-description, exploit
- https://opstree.com/rems-ai-powered-observability/CNA: VulnCheck · product
- https://www.vulncheck.com/advisories/opstree-rems-through-1.0.0-prompt-injection-via-rca-chat-assistantCNA: VulnCheck · third-party-advisory
For agents and automation
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