CVE-2023-29101Network attack vector

Unauthenticated browser script execution via crafted link

Published May 10, 2023 · Updated Apr 28, 2026

Reflected XSS in Muffin Group BeTheme 26.7.5 and earlier allows remote attackers to execute script in a visitor's browser via a crafted link. Neither the CNA record nor Patchstack identifies the affected request parameter, handler, or output context in which input is returned without safe encoding. No authentication is required, but a user must open the crafted link; resulting script runs in the site's origin and can read or alter browser-accessible data.

CVSS severity7.1
High
EPSS probability0.38%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Reflected XSS in Muffin Group BeTheme 26.7.5 and earlier allows remote attackers to execute script in a visitor's browser via a crafted link. Neither the CNA record nor Patchstack identifies the affected request parameter, handler, or output context in which input is returned without safe encoding. No authentication is required, but a user must open the crafted link; resulting script runs in the site's origin and can read or alter browser-accessible data.

The record

CVE
CVE-2023-29101
Published
May 10, 2023
Updated
Apr 28, 2026
Vendor
Muffin Group
Product
BeTheme
Classifications
CWE-79, CAPEC-591, T1189
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 10, 2023CVE publishedPublication date reported by the CVE source.
  2. Apr 28, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=n/a <=26.7.5 changes=[{"at":"26.8","status":"unaffected"}]

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Muffin Group · BeThemeversion=n/a <=26.7.5 changes=[{"at":"26.8","status":"unaffected"}]

Published CVSS scores

6.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
7.1PatchstackCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CAPEC-591Reflected XSS
T1189Drive-by Compromise

Public exploit references

No public exploit references are available in this record.

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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