CVE-2026-120492
Chainlit 2.12.0 contains a server-side request forgery vulnerability that allows unauthenticated attackers to bypass path-scoped MCP allowed
CVSS
5.4
Média
EPSS
0.2%
p13
KEV
—
Exploit Today
4
0-100
Publicado: 2 de nov. de 2026 · Última mod.: 7 de nov. de 2026 · CWE-918
0.2%EPSS · 30 dias0.2%
2026-11-032026-11-07
Chainlit 2.12.0 contains a server-side request forgery vulnerability that allows unauthenticated attackers to bypass path-scoped MCP allowed_urls entries because validate_mcp_url does not reject the semicolon character. Attackers can submit MCP URLs with '..;' segments to the /mcp endpoint, causing requests to paths outside the operator's grant on origins that strip semicolon path parameters.
- github.comhttps://github.com/Chainlit/chainlit/blob/2.12.0/backend/chainlit/mcp.py#L199-L208
- github.comhttps://github.com/Chainlit/chainlit/blob/2.12.0/backend/chainlit/mcp.py#L90-L177
- github.comhttps://github.com/Chainlit/chainlit/security/advisories/GHSA-hvfh-5mj3-5f3j
- www.vulncheck.comhttps://www.vulncheck.com/advisories/chainlit-2.12.0-ssrf-via-semicolon-path-segment-in-mcp-allowed-urls
- github.comhttps://github.com/Chainlit/chainlit/security/advisories/GHSA-hvfh-5mj3-5f3j
CVECVSSEPSSKEVRExploitTítuloMod.
CVE-2026-1235526.5 MÉD—
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———OpenAM before 16.1.4 contains a server-side request forgery vulnerability that allows parties registering UMA resource sets to trigger internal requests through unvalidated scope description URLs. Attackers can register resource sets with scope URLs pointing to internal hosts or cloud metadata endpoints, which OpenAM fetches when sending pending-request notification emails, enabling internal network probing.5hCVE-2026-1235364.1 MÉD—
———OpenAM before 16.1.4 contains a server-side request forgery vulnerability that allows administrators, including delegated realm administrators, to make the server fetch arbitrary URLs through federation configuration wizard metadata URLs. Attackers can enter metadata or OpenID Connect discovery URLs pointing to internal hosts or cloud metadata endpoints to probe the internal network and read partial responses.5hCVE-2026-755907.2 ALT29.0%
——9IBM API Connect 12.1.0.0 through 12.1.1.2 could allow a remote attacker to access internal network resources and obtain sensitive information due to server-side request forgery. A protection that blocks requests to internal addresses can be bypassed, so the server could be made to contact internal services and return part of their responses.1dCVE-2026-191287.5 ALT33.8%
——10IBM API Connect 12.1.0.0 through 12.1.1.2 could allow an authenticated attacker to send unauthorized requests from the system due to server-side request forgery. This could be used to enumerate network resources or to support further attacks.5hCVE-2026-191223.8 BAI17.2%
——5IBM API Connect 12.1.0.0 through 12.1.1.2 could allow an authenticated privileged attacker to send unauthorized requests from the system due to server-side request forgery. This could be used to enumerate network resources or to support further attacks.1d