CVE-2022-4848Public exploitNetwork attack vector

Unauthorized data modification via missing CSRF validation

Published Dec 29, 2022 · Updated Apr 9, 2025

Cross-site request forgery in Memos 0.9.0 and earlier allows remote attackers to alter application data through an authenticated user's browser. The server accepts state-changing API requests without CSRF middleware, while its session cookie lacks a SameSite restriction. Exploitation requires an authenticated user to load attacker-controlled content, which can submit requests with that user's session and modify data within the user's permissions.

CVSS severity8.6
High
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

Cross-site request forgery in Memos 0.9.0 and earlier allows remote attackers to alter application data through an authenticated user's browser. The server accepts state-changing API requests without CSRF middleware, while its session cookie lacks a SameSite restriction. Exploitation requires an authenticated user to load attacker-controlled content, which can submit requests with that user's session and modify data within the user's permissions.

The record

CVE
CVE-2022-4848
Published
Dec 29, 2022
Updated
Apr 9, 2025
Vendor
Memos
Product
Memos
Classifications
CWE-940, CAPEC-594, CAPEC-596, CAPEC-595, CAPEC-500, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 29, 2022CVE publishedPublication date reported by the CVE source.
  2. Apr 9, 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=unspecified <0.9.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Memos · Memosversion=unspecified <0.9.1

Published CVSS scores

5.7NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:H/A:N
8.6huntr.dev CNACVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:L

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-940Improper Verification of Source of a Communication Channel
CAPEC-594Traffic Injection
CAPEC-596TCP RST Injection
CAPEC-595Connection Reset
CAPEC-500WebView Injection
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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