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CVE

CVE-2026-27169

OpenSift: Persistent XSS Chat Tool Rendering
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CVE

CVE-2026-27169

OpenSift: Persistent XSS Chat Tool Rendering

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.

Package Versions Affected

Package Version
patch Availability
No items found.

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CVSS Version

Severity
Base Score
CVSS Version
Score Vector
C
H
U
8.9
-
3.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:L
C
H
U
0
-
3.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:L
C
H
U
-

Related Resources

No items found.

References

https://github.com/OpenSift/OpenSift/releases/tag/v1.1.3-alpha, https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/27xxx/CVE-2026-27169.json, https://github.com/OpenSift/OpenSift/security/advisories/GHSA-qrpx-7cmv-5gv5, https://nvd.nist.gov/vuln/detail/CVE-2026-27169

Severity

8.9

CVSS Score
0
10

Basic Information

Ecosystem
Base CVSS
8.9
EPSS Probability
0.00021%
EPSS Percentile
0.05967%
Introduced Version
0
Fix Available
8b7020b52035186281545c91fab72ee4ba41f5cc

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