CVE-2026-22219
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.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (4.62%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 4.0
- 8.3 HIGHCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M
- EPSS
- 4.62% probability · 91th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-918
- Affected
- chainlit/chainlit
- Source
- disclosure@vulncheck.com
References
- https://github.com/Chainlit/chainlit/releases/tag/2.9.4Product, Release Notes
- https://www.vulncheck.com/advisories/chainlit-sqlalchemy-data-layer-ssrf-via-project-elementThird Party Advisory
- https://www.zafran.io/resources/chainleak-critical-ai-framework-vulnerabilities-expose-data-enable-cloud-takeoverExploit, Mitigation, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.