CVE-2024-2234Public exploitNetwork attack vector

Stored XSS via unsanitized Custom CSS setting

Published Jul 3, 2024 · Updated Aug 1, 2024

Stored XSS in the Himer theme before 2.1.1 allows remote authenticated users with Contributor access to inject scripts into pages. The Custom CSS code post setting stores input without sufficient sanitization and emits it on the front end without context-appropriate escaping. Contributor-level access is required to save the payload, and the script runs in a visitor's browser whenever an affected page is viewed.

CVSS severity5.4
Medium
EPSS probability0.34%
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 the Himer theme before 2.1.1 allows remote authenticated users with Contributor access to inject scripts into pages. The Custom CSS code post setting stores input without sufficient sanitization and emits it on the front end without context-appropriate escaping. Contributor-level access is required to save the payload, and the script runs in a visitor's browser whenever an affected page is viewed.

The record

CVE
CVE-2024-2234
Published
Jul 3, 2024
Updated
Aug 1, 2024
Vendor
2code
Product
Himer
Classifications
CWE-79, T1203
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 3, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 1, 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 <2.1.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

2code · Himerversion=0 <2.1.1

Published CVSS scores

6.3CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L
5.4NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
6.4WordfenceCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1203Exploitation for Client Execution

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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