SB20260831106 - Multiple vulnerabilities in ip-address
Published: August 31, 2026
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 2 vulnerabilities.
1) Incorrect Comparison (CVE-ID: N/A)
CWE-ID: CWE-697 - Incorrect Comparison
CVSSv4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to bypass network trust boundaries and perform server-side request forgery against on-link hosts.
The vulnerability exists due to incorrect comparison in Address6.isLinkLocal() in src/ipv6.ts when classifying IPv6 link-local addresses. A remote attacker can supply a crafted link-local IPv6 address outside fe80::/64 but within fe80::/10 to bypass network trust boundaries and perform server-side request forgery against on-link hosts.
The issue affects applications that rely on this method for security decisions, and reachable targets are generally limited to hosts on the server\'s own network segment.
2) Server-Side Request Forgery (SSRF) (CVE-ID: N/A)
CWE-ID: CWE-918 - Server-Side Request Forgery (SSRF)
CVSSv4: 6.3 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N]
The vulnerability allows a remote attacker to bypass network trust boundaries and conduct server-side request forgery.
The vulnerability exists due to improper address classification in the Address6 classifier when processing NAT64 local-use IPv6 addresses in the 64:ff9b:1::/48 range. A remote attacker can supply a specially crafted address that is classified as a global address to bypass network trust boundaries and conduct server-side request forgery.
Exploitation requires the server network to run a NAT64 translator on a prefix inside 64:ff9b:1::/48, and the attacker must know or guess the deployed prefix length.
Remediation
Install update from vendor's website.