CVE-2023-6613Public exploitNetwork attack vector

Stored script execution via unsanitized logo option

Published Dec 8, 2023 · Updated Nov 21, 2024

Stored cross-site scripting in Typecho 1.2.1 allows remote authenticated users to inject script through a theme logo setting. The theme-options handler stores attacker-controlled logo markup and renders it in /admin/options-theme.php without adequate output neutralization. Administrator privileges are required to submit the setting, and another user must open the affected theme-options page for the script to run in that browser.

CVSS severity2.4
Low
EPSS probability0.56%
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 Typecho 1.2.1 allows remote authenticated users to inject script through a theme logo setting. The theme-options handler stores attacker-controlled logo markup and renders it in /admin/options-theme.php without adequate output neutralization. Administrator privileges are required to submit the setting, and another user must open the affected theme-options page for the script to run in that browser.

The record

CVE
CVE-2023-6613
Published
Dec 8, 2023
Updated
Nov 21, 2024
Vendor
Typecho
Product
Typecho
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Dec 8, 2023CVE publishedPublication date reported by the CVE source.
  2. Nov 21, 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=1.2.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Typecho · Typechoversion=1.2.1

Published CVSS scores

3.3VulDBAV:N/AC:L/Au:M/C:N/I:P/A:N
4.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
2.4VulDBCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:N/I:L/A:N
2.4VulDBCVSS:3.0/AV:N/AC:L/PR:H/UI:R/S:U/C:N/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
Privilegesadmin
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1059.007Command and Scripting Interpreter: JavaScript

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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