CVE-2023-43647Network attack vector

Reflected XSS via unescaped upload filename

Published Oct 30, 2023 · Updated Sep 6, 2024

Cross-site scripting in baserCMS before 4.8.0 allows remote attackers to execute script in a user's browser via the file-upload feature. Upload-related PHP templates and helpers rendered attacker-controlled filenames and element identifiers without HTML escaping, so a crafted upload value was reflected into the management page. Exploitation requires a victim to open the affected management view; reported impact is browser-side script execution with limited confidentiality and integrity effects.

CVSS severity6.1
Medium
EPSS probability0.51%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Cross-site scripting in baserCMS before 4.8.0 allows remote attackers to execute script in a user's browser via the file-upload feature. Upload-related PHP templates and helpers rendered attacker-controlled filenames and element identifiers without HTML escaping, so a crafted upload value was reflected into the management page. Exploitation requires a victim to open the affected management view; reported impact is browser-side script execution with limited confidentiality and integrity effects.

The record

CVE
CVE-2023-43647
Published
Oct 30, 2023
Updated
Sep 6, 2024
Vendor
baserCMS Users Community
Product
baserCMS
Classifications
CWE-79, T1189
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 30, 2023CVE publishedPublication date reported by the CVE source.
  2. Sep 6, 2024Record 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=< 4.8.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

baserCMS Users Community · baserCMSversion=< 4.8.0

Published CVSS scores

6.1GitHub CNACVSS:3.1/AV:N/AC:L/PR:N/UI:R/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 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')
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

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo