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Description

Chainlit versions prior to 2.9.4 contain a server-side request forgery (SSRF) vulnerability in the /project/element update flow when configured with the SQLAlchemy data layer backend. An authenticated client can provide a user-controlled url value in an Element, which is fetched by the SQLAlchemy element creation logic using an outbound HTTP GET request. This allows an attacker to make arbitrary HTTP requests from the Chainlit server to internal network services or cloud metadata endpoints and store the retrieved responses via the configured storage provider.

PUBLISHED Reserved 2026-01-06 | Published 2026-01-19 | Updated 2026-01-20 | Assigner VulnCheck




HIGH: 8.3CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N

Problem types

CWE-918 Server-Side Request Forgery (SSRF)

Product status

Default status
unaffected

Any version before 2.9.4
affected

Credits

Ido Shani and Gal Zaban of Zafran Security finder

References

github.com/Chainlit/chainlit/releases/tag/2.9.4 release-notes patch

www.zafran.io/...abilities-expose-data-enable-cloud-takeover technical-description exploit

www.vulncheck.com/...emy-data-layer-ssrf-via-project-element third-party-advisory

cve.org (CVE-2026-22219)

nvd.nist.gov (CVE-2026-22219)

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