CVE-2026-33010Public exploitNetwork attack vector

Cross-origin memory theft via wildcard CORS

Published Mar 20, 2026 · Updated Mar 20, 2026

CORS misconfiguration in doobidoo mcp-memory-service before 10.25.1 allows remote attackers to read and alter memories cross-origin. The HTTP server's CORSMiddleware accepts wildcard origins, methods, and headers, causing anonymous API responses to carry Access-Control-Allow-Origin: *. Exploitation requires HTTP and anonymous access to be enabled and a user to visit an attacker-controlled site; the site can read, modify, and delete stored memories.

CVSS severity8.1
High
EPSS probability0.39%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

CORS misconfiguration in doobidoo mcp-memory-service before 10.25.1 allows remote attackers to read and alter memories cross-origin. The HTTP server's CORSMiddleware accepts wildcard origins, methods, and headers, causing anonymous API responses to carry Access-Control-Allow-Origin: *. Exploitation requires HTTP and anonymous access to be enabled and a user to visit an attacker-controlled site; the site can read, modify, and delete stored memories.

The record

CVE
CVE-2026-33010
Published
Mar 20, 2026
Updated
Mar 20, 2026
Vendor
doobidoo
Product
mcp-memory-service
Classifications
CWE-942, T1189
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 20, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 20, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 10.25.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

doobidoo · mcp-memory-serviceversion=< 10.25.1

Published CVSS scores

8.1GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
8.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-942Permissive Cross-domain Policy with Untrusted Domains
T1189Drive-by Compromise

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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