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Server-side request forgery in Trawl MCP policy via IPv4-mapped IPv6

Priority LOW 28CWE-918Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
Present
Impact type
—
Confidentiality · integrity · availability
None · None · None
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA.

Summary

Trawl from 1.5.0 before 1.10.0 contains a server-side request forgery flaw (CWE-918) in its MCP outbound URL policy. An unauthenticated remote attacker can bypass that policy by using IPv4-mapped IPv6 addresses, either directly or through redirects, to make the server fetch loopback, private, and cloud metadata services and read the responses.

Written with Claude Haiku 5.5 from the sources below · 2026-11-06

Description from the CNA

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.

Why it matters now

EPSS 0.0035 28th percentileScored 2026-11-07
Fix Fixed trawl (germondai): 1.10.0

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
germondaitrawl1.5.0 to before 1.10.01.10.0Patch availableCNA
  • trawl Vendorgermondai Affected 1.5.0 to before 1.10.0 Fixed in 1.10.0 Patch available CNA

Remediation

Upgrade germondai trawl to version 1.10.0, which fixes the issue.

Written with Claude Haiku 5.5 from the sources below · 2026-11-06

  • Fix · CNA trawl (germondai) Fixed in 1.10.0

Vendor assessments

Red Hat

Red Hat's page for this CVE →

Not affected: 1 product
  • Red Hat

Timeline

  1. 2026-11-04 Threatist record created from CVE-2026-122140
  2. 2026-11-04 Alias added: GHSA-42jx-rr99-g8v2
  3. 2026-11-06 Priority changed: MEDIUM → LOW
  4. 2026-11-06 Affected versions changed · Red Hat
  5. 2026-11-06 CVSS score added · Red Hat

References

Sources