CVE-2023-0109Public exploitNetwork attack vector

Stored XSS via executable uploaded resource types

Published Nov 15, 2024 · Updated Nov 15, 2024

Stored XSS in Memos before 0.10.0 allows remote authenticated users to execute scripts in visitors' browsers through uploaded resources. The public resource handler returns attacker-controlled text or application MIME types as executable content instead of forcing plain text. A visitor must open the uploaded HTML, after which the script runs in the Memos origin and can read or alter browser-accessible data.

CVSS severity5.4
Medium
EPSS probability0.44%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored XSS in Memos before 0.10.0 allows remote authenticated users to execute scripts in visitors' browsers through uploaded resources. The public resource handler returns attacker-controlled text or application MIME types as executable content instead of forcing plain text. A visitor must open the uploaded HTML, after which the script runs in the Memos origin and can read or alter browser-accessible data.

The record

CVE
CVE-2023-0109
Published
Nov 15, 2024
Updated
Nov 15, 2024
Vendor
Memos
Product
Memos
Classifications
CWE-79, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Nov 15, 2024CVE publishedPublication date reported by the CVE source.
  2. Nov 15, 2024Record 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=0 <0.10.0
  2. Affected versionversion=unspecified <0.10.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Memos · Memosversion=0 <0.10.0; version=unspecified <0.10.0

Published CVSS scores

5.4NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
9.8huntr.devCVSS:3.0/AV:N/AC:L/PR:N/UI:N/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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1190Exploit Public-Facing Application

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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