How severe is CVE-2026-22219?

CVE-2026-22219 has a CVSS 4.0 base score of 8.3 (HIGH). EPSS estimates a 5.1% probability of exploitation in the next 30 days.

CVE-2026-22219: Chainlit < 2.9.4 SQLAlchemy Data Layer SSRF via

Q: What is 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. 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.

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.

Severity

CVSS 4.0 · CNA8.3 HIGH

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

SSVC · CISA-ADP

Exploitationnone

Automatableyes

Technical impactpartial

Exploitation Context

as of October 13, 2026

All KEV statistics→

Its current EPSS score (5.1%) is higher than that of 18% of CISA KEV entries.

Affected Products

Vendor	Product	Affected versions
Chainlit	Chainlit Chainlit	0 to <2.9.4

References

3 Links

Patches

https://github.com/Chainlit/chainlit/releases/tag/2.9.4

Exploits & PoCs

https://www.zafran.io/resources/chainleak-critical-ai-framework-vulnerabilities-expose-data-enable-cloud-takeover

Third-party advisories

https://www.vulncheck.com/advisories/chainlit-sqlalchemy-data-layer-ssrf-via-project-element

Record Details

Published

2026-01-19

Last updated

2026-10-08

Assigner (CNA)

VulnCheck

Credited to

Ido Shani and Gal Zaban of Zafran Security

More from Chainlit

CVE-2026-222187.1 HIGH

Chainlit < 2.9.4 Arbitrary File Read via /project/element

ChainlitEPSS 9.5%2026-01-19

Tool categories

Application Security Tools Penetration Testing Tools

CVE record data © The MITRE Corporation, used under the CVE Terms of Use. Exploited-in-the-wild data from the CISA Known Exploited Vulnerabilities catalog (CC0). Exploit prediction scores by FIRST EPSS (first.org/epss). This site is not endorsed or certified by MITRE, NVD, CISA, or FIRST.

CVE-2026-22219