CVE-2011-3610Network attack vector

Cross-site scripting via unsanitized Flash tagcloud input

Published Jan 22, 2020 · Updated Aug 6, 2024

Cross-site scripting in Serendipity Freetag Plugin before 3.30 allows remote attackers to execute script via tagcloud.swf. The bundled Flash file accepts attacker-controlled HTML through the tagcloud parameter for its tags action and renders it without neutralizing script. The Flash tag cloud must be enabled or directly requested, and a victim must load the crafted content; script runs in the blog's browser origin.

CVSS severity6.1
Medium
EPSS probability1.22%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Cross-site scripting in Serendipity Freetag Plugin before 3.30 allows remote attackers to execute script via tagcloud.swf. The bundled Flash file accepts attacker-controlled HTML through the tagcloud parameter for its tags action and renders it without neutralizing script. The Flash tag cloud must be enabled or directly requested, and a victim must load the crafted content; script runs in the blog's browser origin.

The record

CVE
CVE-2011-3610
Published
Jan 22, 2020
Updated
Aug 6, 2024
Vendor
Serendipity Team
Product
Serendipity Freetag Plugin
Classifications
CWE-79, T1189
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 22, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 6, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=before 3.30

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Serendipity Team · Serendipity Freetag Pluginversion=before 3.30

Published CVSS scores

6.1NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
4.3NVDAV:N/AC:M/Au:N/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.

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.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo