CVE-2026-27169: high-severity vulnerability in OpenSift
OpenSift: Persistent XSS Chat Tool Rendering
Published · Updated
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21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 8.9epss 0.4%
OpenSift is an AI study tool that sifts through large datasets using semantic search and generative AI. Versions 1.1.2-alpha and below render untrusted user/model content in chat tool UI surfaces using unsafe HTML interpolation patterns, leading to XSS. Stored content can execute JavaScript when later viewed in authenticated sessions. An attacker who can influence stored study/quiz/flashcard content could trigger script execution in a victim’s browser, potentially performing actions as that user in the local app session. This issue has been fixed in version 1.1.3-alpha.
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:L
Affected products
OpenSift · OpenSiftRelated CVEs — OpenSift
In the same product, most dangerous first.
CVE-2026-28676HIGHOpenSift: Insufficient path containment checks in storage helpers could allow path traversal-style file operationsEPSS 0.5%CVE-2026-28677HIGHOpenSift: Insufficient URL destination restrictions in ingest flow could enable SSRF-style internal accessEPSS 0.3%CVE-2026-28675MEDIUMOpenSift: Sensitive implementation details exposed via raw exception messages and token-returning endpointsEPSS 0.3%CVE-2026-27170HIGHOpenSift: SSRF risk in URL ingestion endpointEPSS 0.2%CVE-2026-27189MEDIUMOpenSift: Race-prone local persistence could cause state corruption/lossEPSS 0.1%