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TI-2026-79978 Aliases CVE-2026-115812

Path traversal in Amazon Web Services Multi Model Server during model extraction

Priority MEDIUM 49CWE-23Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
—
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

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

Summary

Amazon Web Services Multi Model Server 1.1.11 and earlier contains a relative path traversal flaw (CWE-23) during model archive extraction. A remote attacker can supply a crafted model archive that writes files outside the intended directory and might lead to arbitrary code execution. The CVSS vector indicates no privileges or user interaction are required.

Written with Claude Haiku 5.5 from the sources below · 2026-11-02

Description from the CNA

Relative path traversal during model archive extraction in Amazon Web Services Multi Model Server 1.1.11 and earlier might allow remote actors to execute arbitrary code via a crafted model archive. Multi Model Server is end of life and no fixed version is available. Users should discontinue use of Multi Model Server and migrate to a supported model serving solution.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00529 44th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
AWSmulti-model-serverup to 1.1.11—No fix listedCNA
  • multi-model-server VendorAWS Affected up to 1.1.11 Fixed in — No fix listed CNA

Remediation

The sources list no fixed version for Multi Model Server. Multi Model Server is end of life, so the sources advise discontinuing its use and migrating to a supported model serving solution.

Written with Claude Haiku 5.5 from the sources below · 2026-11-02

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Advisory ·

    AWS multi-model-server — aws.amazon.com/security/security-bulletins/2026-148-aws

    2 records Highest priority Priority MEDIUM 1 MEDIUM, 1 LOW

    Other records, highest priority first

    • TI-2026-79979 Server-side request forgery in Amazon Web Services Multi Model ServerPriority LOW 36
    Show all 2 records → Advisory →

Timeline

  1. 2026-10-23 Threatist record created from CVE-2026-115812
  2. 2026-10-25 EPSS moved to the below the 50th percentile
  3. 2026-11-02 CISA SSVC decision points changed

References

Advisory 1

  • TI-2026-23989 crypto: algif_aead - Revert to operating out-of-place KEVCVSS 3.1HIGH 7.8
  • TI-2023-23979 The HTTP/2 protocol allows a denial of service (server resource consumption) because… KEVCVSS 3.1HIGH 7.5
  • TI-2024-18648 Amazon AWS Amplify CLI before 12.10.1 incorrectly configures the role trust policy of IAM… CVSS 3.1CRITICAL 9.8
  • TI-2024-05929 Openssh: regresshion - race condition in ssh allows rce/dos CVSS 3.1HIGH 8.1
  • TI-2025-03847 Input validation issue in AWS Amplify Studio UI component properties CVSS 4.0CRITICAL 9.0
  • TI-2026-11603 HTTP/2 Stream Parser Confusion Body-Inspection Bypass in Amazon CloudFront with AWS WAF CVSS 4.0HIGH 7.9
See all 383 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences