CVE-2026-16617Network attack vector

Stored XSS via unescaped file description

Published Aug 19, 2026 · Updated Aug 19, 2026

Stored XSS in Simple File List through 6.3.11 allows remote attackers to run script in visitors' browsers via a crafted file description. The plugin renders a file's description on the public file list without neutralizing or escaping script-capable content before HTML output. Exploitation requires front-end file management to be enabled and reaches any visitor who views the list; published records do not disclose a fixed version.

CVSS severity8.8
High
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 Simple File List through 6.3.11 allows remote attackers to run script in visitors' browsers via a crafted file description. The plugin renders a file's description on the public file list without neutralizing or escaping script-capable content before HTML output. Exploitation requires front-end file management to be enabled and reaches any visitor who views the list; published records do not disclose a fixed version.

The record

CVE
CVE-2026-16617
Published
Aug 19, 2026
Updated
Aug 19, 2026
Vendor
Element Engage, LLC
Product
Simple File List
Classifications
CWE-79, T1189
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 19, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 19, 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=0 <=6.3.11

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Element Engage, LLC · Simple File Listversion=0 <=6.3.11

Published CVSS scores

8.8CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

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.

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Technologies

Your stack

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Your stack

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