CVE-2022-0350Public exploitNetwork attack vector

Stored script execution via unsafe Markdown links

Published Mar 31, 2022 · Updated Aug 2, 2024

Stored cross-site scripting in B3log Vditor before 3.8.13 allows remote authenticated users to execute script through Markdown links. The Markdown renderer preserves a user-controlled javascript: URI as a clickable link instead of rejecting or neutralizing the unsafe scheme. Exploitation requires permission to store editor content and a victim to click the crafted link, exposing data and actions available to the victim's browser session.

CVSS severity5.4
Medium
EPSS probability0.55%
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 B3log Vditor before 3.8.13 allows remote authenticated users to execute script through Markdown links. The Markdown renderer preserves a user-controlled javascript: URI as a clickable link instead of rejecting or neutralizing the unsafe scheme. Exploitation requires permission to store editor content and a victim to click the crafted link, exposing data and actions available to the victim's browser session.

The record

CVE
CVE-2022-0350
Published
Mar 31, 2022
Updated
Aug 2, 2024
Vendor
B3log
Product
Vditor
Classifications
CWE-79, T1204.001
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 31, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 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=unspecified <3.8.13

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

B3log · Vditorversion=unspecified <3.8.13

Published CVSS scores

3.5NVDAV:N/AC:M/Au:S/C:N/I:P/A:N
5.4NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
6.1huntr.devCVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:U/C:L/I:L/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.

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

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')
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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