Vulnerability · Published Aug 12, 2026 · Assigned by GitHub_M

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

Medium 6.9

In plain English

A medium-severity server-side request forgery in UFO from microsoft. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 2.9% (higher than 87% of all known vulnerabilities).

Severity (CVSS 4.0)6.9Medium

Exploit odds (30 days)2.9%top 13.0% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official 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 (as reported)

Vendor	Product	Versions
microsoft	UFO	< 3.0.8

Weakness: CWE-918 · Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:N/SA:N

References

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