CVE-2026-73058 PUBLISHED

stoatchat before 0.15.0 SSRF via IPv6 unspecified address bypass

Assigner: VulnCheck
Reserved: 10.08.2026 Published: 16.08.2026 Updated: 16.08.2026

stoatchat versions before 0.15.0 fail to block the IPv6 unspecified address (::) in the SSRF blocklist, allowing unauthenticated attackers to bypass protections via the /proxy and /embed endpoints. Attackers can craft requests using IPv6 literal syntax to access services on the loopback interface and retrieve sensitive internal content.

CVSS Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N
CVSS Score: 6.9

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Network	Confidentiality	Low	Confidentiality	Low
Attack Complexity	Low	Integrity	None	Integrity	None
Attack Requirements	None	Availability	None	Availability	None
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:N/A:N
CVSS Score: 5.8

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

CVSS 3.1

Product Status

Vendor	stoatchat
Product	stoatchat
Versions	Default: unaffected affected from 0 to 0.15.0 (excl.) Version 0.15.0 is unaffected

CVE-2026-73058 PUBLISHED

stoatchat before 0.15.0 SSRF via IPv6 unspecified address bypass

Metrics

Product Status

Credits

References

Problem Types