CVE-2026-122140

MEDIUM 5.8

Trawl 1.5.0 before 1.10.0 SSRF via IPv4-mapped IPv6 MCP Policy Bypass

CVSS Score

5.8

EPSS Score

0.0%

EPSS Percentile

0th

Trawl 1.5.0 before 1.10.0 contains a server-side request forgery vulnerability that allows unauthenticated attackers to bypass the MCP outbound URL policy using IPv4-mapped IPv6 addresses. Attackers can supply hex-normalized addresses like ::ffff:7f00:1 directly or via redirects to fetch loopback, private, and cloud metadata services and read responses.

CWE	CWE-918
Vendor	germondai
Product	trawl
Published	Nov 4, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Changed

Confidentiality

Low

Integrity

None

Availability

None

Affected Versions

germondai / trawl

1.5.0 < 1.10.0

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/germondai/trawl/security/advisories/GHSA-mj45-84p2-v77q github.com: https://github.com/germondai/trawl/commit/17cdb33a9a6a8200cf8f9fd6a57b295b04ee5173 github.com: https://github.com/germondai/trawl/pull/263 github.com: https://github.com/germondai/trawl/releases/tag/v1.10.0 github.com: https://github.com/germondai/trawl/blob/v1.9.3/apps/api/src/outbound-policy.ts#L55-L56 vulncheck.com: https://www.vulncheck.com/advisories/trawl-1.5.0-before-1.10.0-ssrf-via-ipv4-mapped-ipv6-mcp-policy-bypass

Credits

Leardian 🔍 Komiljon Ayubov