CVE-2026-28476 PUBLISHED

OpenClaw < 2026.2.14 - Server-Side Request Forgery in Tlon Extension Authentication

Assigner: VulnCheck
Reserved: 27.02.2026 Published: 05.03.2026 Updated: 09.03.2026

OpenClaw versions prior to 2026.2.14 contain a server-side request forgery vulnerability in the optional Tlon Urbit extension that accepts user-provided base URLs for authentication without proper validation. Attackers who can influence the configured Urbit URL can induce the gateway to make HTTP requests to arbitrary hosts including internal addresses.

CVSS Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:L/SI:L/SA:L
CVSS Score: 6.3

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Network	Confidentiality	None	Confidentiality	Low
Attack Complexity	Low	Integrity	Low	Integrity	Low
Attack Requirements	Present	Availability	None	Availability	Low
Privileges Required	None
User Interaction	None

CVSS 4.0

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:L
CVSS Score: 8.3

Attack Vector	Network	Scope	Changed
Attack Complexity	Low	Confidentiality Impact	Low
Privileges Required	None	Integrity Impact	Low
User Interaction	None	Availability Impact	Low

CVSS 3.1

Product Status

Vendor	OpenClaw
Product	OpenClaw
Versions	Default: unaffected affected from 0 to 2026.2.14 (excl.)

CVE-2026-28476 PUBLISHED

OpenClaw < 2026.2.14 - Server-Side Request Forgery in Tlon Extension Authentication

Metrics

Product Status

Credits

References

Problem Types