01 Record

CVE-2026-49857

auth-fetch-mcp has SSRF Protection Bypass via IPv4-mapped IPv6 Loopback

HighPUBLISHEDCNA: GitHub_M

Base score7.4 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N

02 Description

auth-fetch-mcp has SSRF Protection Bypass via IPv4-mapped IPv6 Loopback

Published: 2026-08-13 14:50Z1 DAY AGO
Last updated: 2026-08-13 17:52Z1 DAY AGO
Reserved: 2026-06-01
Assigning CNA: GitHub_M
Record state: PUBLISHED
Severity: High (CVSS 7.4)
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N
Weaknesses: CWE-918
SSVC decision: ExploitationnoneAutomatablenoTechnical Impactpartial
Data version: 5.2
Document digest: 4684faafa28b2f9ab51552ac6be301f167f7a597b8e4875d594f0bc5734ce1b3

VendorProductVersionsPlatforms

ymw0407auth-fetch-mcp< 3.0.2—