CVE-2022-25978Public exploitNetwork attack vector

Stored XSS via unvalidated external resource links

Published Feb 15, 2023 · Updated Mar 18, 2025

Stored cross-site scripting in Memos before 0.11.0 allows remote attackers to execute JavaScript when a user clicks a crafted resource link. The resource-creation route accepted an externalLink value without scheme validation, allowing a javascript: URL to be stored in a public memo. A victim must click the external resource; the script then runs in that user's Memos origin and can read private notes or act as the account.

CVSS severity5.4
Medium
EPSS probability0.53%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored cross-site scripting in Memos before 0.11.0 allows remote attackers to execute JavaScript when a user clicks a crafted resource link. The resource-creation route accepted an externalLink value without scheme validation, allowing a javascript: URL to be stored in a public memo. A victim must click the external resource; the script then runs in that user's Memos origin and can read private notes or act as the account.

The record

CVE
CVE-2022-25978
Published
Feb 15, 2023
Updated
Mar 18, 2025
Vendor
Memos
Product
Memos
Classifications
CWE-79, T1204.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 15, 2023CVE publishedPublication date reported by the CVE source.
  2. Mar 18, 2025Record 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 <*

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Memos · Memosversion=0 <*

Published CVSS scores

6.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
5.4SnykCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1204.001User Execution: Malicious Link

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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