CVE-2021-26549Public exploit

Arbitrary HTML execution via unsanitized console input

Published Feb 9, 2021 · Updated Aug 3, 2024

Cross-site scripting in SmartFoxServer 2.17.0 allows attackers to run arbitrary HTML in an administrator's browser through AdminTool input. The AdminTool God Mode Console returns entered content without adequate sanitization, causing the browser to interpret crafted markup in the site's context. Reachability requires an administrator to manually enable and use the local, default-disabled console; the vendor disputes any remote or cross-site exposure.

CVSS severity5.4
Medium
EPSS probability1.35%
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 SmartFoxServer 2.17.0 allows attackers to run arbitrary HTML in an administrator's browser through AdminTool input. The AdminTool God Mode Console returns entered content without adequate sanitization, causing the browser to interpret crafted markup in the site's context. Reachability requires an administrator to manually enable and use the local, default-disabled console; the vendor disputes any remote or cross-site exposure.

The record

CVE
CVE-2021-26549
Published
Feb 9, 2021
Updated
Aug 3, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-79
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Feb 9, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

5.4NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
3.5NIST NVDAV:N/AC:M/Au:S/C:N/I:P/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)
Vectorlocal
Privilegesadmin
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

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

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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