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Uncontrolled resource consumption in MemTensor memmy-agent

Priority MEDIUM 45CWE-400Published · Updated

Key facts

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

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-400.

Summary

MemTensor memmy-agent up to 1.0.9, 1.1.1 and 1.2.2 has a flaw in the requireAdminWrite function of the Memory Service HTTP server. The server accepts unauthenticated requests to its shutdown endpoint when no token is configured, which lets a remote attacker cause resource consumption (CWE-400) through a victim's browser, and the attack is considered high complexity. A public exploit is linked in the references.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Description from the CNA

A weakness has been identified in MemTensor memmy-agent up to 1.0.9/1.1.1/1.2.2. The impacted element is the function requireAdminWrite of the file Memory/src/server/http.ts of the component Memory Service. This manipulation causes resource consumption. Remote exploitation of the attack is possible. The attack is considered to have high complexity. The exploitability is regarded as difficult. The exploit has been made available to the public and could be used for attacks. The exploit is partially overstated. While "POST /api/v1/admin/shutdown" accepts unauthenticated requests when no token is configured, it’s designed for local use and later received cross-origin fixes. Unauthenticated endpoint exposure is confirmed; browser-triggered DoS remains likely but depends on specific browser behavior.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00296 22nd percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Partial

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

Affected products

VendorProductAffected versionsFixed inStatusSource
MemTensormemmy-agent1.0.0; 1.0.1; 1.0.2; 1.0.3; 1.0.4; 1.0.5; 1.0.6; 1.0.7; 1.0.8; 1.0.9; 1.1.0; 1.1.1; 1.2.0; 1.2.1; 1.2.2—No fix listedCNA
  • memmy-agent VendorMemTensor Affected 1.0.0; 1.0.1; 1.0.2; 1.0.3; 1.0.4; 1.0.5; 1.0.6; 1.0.7; 1.0.8; 1.0.9; 1.1.0; 1.1.1; 1.2.0; 1.2.1; 1.2.2 Fixed in — No fix listed CNA

CPE names CNA · 1

CPEVersionsRoleVendor
cpe:2.3:a:memtensor:memmy-agent:*:*:*:*:*:*:*:*——MemTensor
  • cpe:2.3:a:memtensor:memmy-agent:*:*:*:*:*:*:*:* Versions — — ·MemTensor

Remediation

The sources list no fixed version for MemTensor memmy-agent.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Timeline

  1. 2026-10-19 Threatist record created from CVE-2026-112157
  2. 2026-10-20 Alias added: GHSA-ch9f-9wc3-mgg4
  3. 2026-10-22 CISA SSVC decision points changed
  4. 2026-10-22 Priority changed: LOW → MEDIUM

References

  • TI-2026-52773 MemOS Authentication Bypass via Unset INTERNAL_SERVICE_SECRET CVSS 4.0CRITICAL 9.3

Sources