CVE-2023-4687Public exploitNetwork attack vector

Unauthenticated stored XSS via scheduled-post code update

Published Oct 16, 2023 · Updated Apr 23, 2025

Cross-site scripting in Softaculous Pagelayer before 1.7.7 allows remote attackers to inject script into scheduled posts via unauthenticated requests. The scheduled-post update path accepts header or footer code parameters without enforcing authorization, so attacker-supplied markup is stored and executes when the post is viewed. Exploitation requires a scheduled post and a victim who loads the resulting page; the impact is stored script execution in the viewer's browser with confidentiality and integrity effects, not server-side code execution.

CVSS severity6.1
Medium
EPSS probability0.46%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cross-site scripting in Softaculous Pagelayer before 1.7.7 allows remote attackers to inject script into scheduled posts via unauthenticated requests. The scheduled-post update path accepts header or footer code parameters without enforcing authorization, so attacker-supplied markup is stored and executes when the post is viewed. Exploitation requires a scheduled post and a victim who loads the resulting page; the impact is stored script execution in the viewer's browser with confidentiality and integrity effects, not server-side code execution.

The record

CVE
CVE-2023-4687
Published
Oct 16, 2023
Updated
Apr 23, 2025
Vendor
Softaculous
Product
Pagelayer
Classifications
CWE-79, T1189
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 16, 2023CVE publishedPublication date reported by the CVE source.
  2. Apr 23, 2025Record 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=1.3.2 <1.7.7

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Softaculous · Pagelayerversion=1.3.2 <1.7.7

Published CVSS scores

6.1NVDCVSS: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.

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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 exploitPublished

Weakness, pattern, technique

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

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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