CVE-2025-58836Network attack vector

Stored script execution via unneutralized page input

Published Sep 5, 2025 · Updated May 13, 2026

Stored cross-site scripting in Franz Wieser FW Anker 1.2.6 and earlier allows remote authenticated users to inject browser scripts. Public records do not identify the vulnerable shortcode attribute or PHP function, stating only that stored input is inadequately neutralized during page generation. A low-privileged account must store the payload and another user must view the affected page, after which the script runs in that viewer's browser context.

CVSS severity6.5
Medium
EPSS probability0.22%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored cross-site scripting in Franz Wieser FW Anker 1.2.6 and earlier allows remote authenticated users to inject browser scripts. Public records do not identify the vulnerable shortcode attribute or PHP function, stating only that stored input is inadequately neutralized during page generation. A low-privileged account must store the payload and another user must view the affected page, after which the script runs in that viewer's browser context.

The record

CVE
CVE-2025-58836
Published
Sep 5, 2025
Updated
May 13, 2026
Vendor
Franz Wieser
Product
FW Anker
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 5, 2025CVE publishedPublication date reported by the CVE source.
  2. May 13, 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 <=1.2.6

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Franz Wieser · FW Ankerversion=0 <=1.2.6

Published CVSS scores

6.5PatchstackCVSS:3.1/AV:N/AC:L/PR:L/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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1059.007Command and Scripting Interpreter: JavaScript

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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