CVE-2026-0594Public exploitNetwork attack vector

Reflected XSS via unescaped alpha parameter

Published Jan 14, 2026 · Updated Jan 14, 2026

Reflected XSS in mallsop List Site Contributors 1.1.8 and earlier allows remote attackers to run scripts via the alpha parameter. The alpha query parameter reaches page output without sufficient input sanitization or output escaping, causing its value to become executable markup. No authentication is required, but a victim must open a crafted link; the resulting script runs in that victim's browser context.

CVSS severity6.1
Medium
EPSS probability0.78%
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 mallsop List Site Contributors 1.1.8 and earlier allows remote attackers to run scripts via the alpha parameter. The alpha query parameter reaches page output without sufficient input sanitization or output escaping, causing its value to become executable markup. No authentication is required, but a victim must open a crafted link; the resulting script runs in that victim's browser context.

The record

CVE
CVE-2026-0594
Published
Jan 14, 2026
Updated
Jan 14, 2026
Vendor
mallsop
Product
List Site Contributors
Classifications
CWE-79, T1204.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 14, 2026CVE publishedPublication date reported by the CVE source.
  2. Jan 14, 2026Record 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=* <=1.1.8

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

mallsop · List Site Contributorsversion=* <=1.1.8

Published CVSS scores

6.1WordfenceCVSS: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')
T1204.001Malicious Link

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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