CVE-2026-73297: CWE-918: Server-Side Request Forgery (SSRF) in microsoft UFO
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.
AI Analysis
Technical Summary
Microsoft UFO is an open-source framework for intelligent automation. In versions before 3.0.8, the SSRF protection mechanism (_is_blocked_ip) failed to block specific IPv6 prefixes (64:ff9b::/96, 64:ff9b:1::/48, 2002::/16, 2001::/32) and did not re-validate embedded IPv4 addresses. This allowed attackers who can control URLs passed to validate_url to bypass SSRF guards and reach sensitive internal endpoints such as cloud metadata services or localhost. The vulnerability is identified as CWE-918 and has a CVSS 4.0 base score of 6.9 (medium severity). The issue is resolved in UFO version 3.0.8.
Potential Impact
An unauthenticated remote attacker able to influence URLs processed by the vulnerable function can bypass SSRF protections to access internal network resources, including cloud metadata services and localhost. This could lead to unauthorized information disclosure or further internal network attacks. The vulnerability does not require user interaction and has a network attack vector with low complexity.
Mitigation Recommendations
Upgrade to Microsoft UFO version 3.0.8 or later, where the SSRF protection correctly blocks the specified IPv6 prefixes and re-checks embedded IPv4 addresses. No other mitigation guidance is provided. Patch status is confirmed fixed in version 3.0.8.
CVE-2026-73297: CWE-918: Server-Side Request Forgery (SSRF) in microsoft UFO
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.
CVSS v4.0
Score 6.9medium
Affected software
microsoft
UFO
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Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
Microsoft UFO is an open-source framework for intelligent automation. In versions before 3.0.8, the SSRF protection mechanism (_is_blocked_ip) failed to block specific IPv6 prefixes (64:ff9b::/96, 64:ff9b:1::/48, 2002::/16, 2001::/32) and did not re-validate embedded IPv4 addresses. This allowed attackers who can control URLs passed to validate_url to bypass SSRF guards and reach sensitive internal endpoints such as cloud metadata services or localhost. The vulnerability is identified as CWE-918 and has a CVSS 4.0 base score of 6.9 (medium severity). The issue is resolved in UFO version 3.0.8.
Potential Impact
An unauthenticated remote attacker able to influence URLs processed by the vulnerable function can bypass SSRF protections to access internal network resources, including cloud metadata services and localhost. This could lead to unauthorized information disclosure or further internal network attacks. The vulnerability does not require user interaction and has a network attack vector with low complexity.
Mitigation Recommendations
Upgrade to Microsoft UFO version 3.0.8 or later, where the SSRF protection correctly blocks the specified IPv6 prefixes and re-checks embedded IPv4 addresses. No other mitigation guidance is provided. Patch status is confirmed fixed in version 3.0.8.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-08-11T19:42:11.450Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6a7ca247bf8831d539d7ad5d
Added to database: 08/12/2026, 16:41:43 UTC
Last enriched: 08/12/2026, 16:57:25 UTC
Last updated: 09/25/2026, 07:23:45 UTC
Views: 63
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