What’s Vulnerable › Vulnerabilities

CVE-2026-73297: Microsoft UFO: IPv6 transition address bypass of SSRF guard in URL validation

• Severity: medium (CVSS 6.9 v4.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.9% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-08-12 · updated 2026-10-24
• Weakness: CWE-918

Description

Microsoft UFO open-source framework for intelligent automation across devices and platforms. Prior to 3.0.8, _is_blocked_ip in ufo/utils/url_security.py did not block NAT64 prefixes 64:ff9b::/96 and 64:ff9b:1::/48, the 6to4 prefix 2002::/16, or the Teredo prefix 2001::/32 and did not re-check embedded IPv4 destinations, allowing an unauthenticated remote attacker who can influence URLs processed by validate_url to bypass the SSRF guard and reach cloud metadata, internal services, or localhost. This issue is fixed in version 3.0.8.

Affected products

• microsoft UFO: before 3.0.8

References

• https://github.com/microsoft/UFO/commit/96983c73ed09e884a5f1d7ff8936c953b234b684
• https://github.com/microsoft/UFO/releases/tag/v3.0.8
• https://github.com/microsoft/UFO/security/advisories/GHSA-7hrg-r8xr-p8gr
• https://github.com/microsoft/UFO/security/advisories/GHSA-7hrg-r8xr-p8gr

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