CVE-2013-5594Public exploitNetwork attack vector

Clickjacking via XML pretty-printing wrapper bypass

Published Feb 18, 2020 · Updated Aug 6, 2024

UI content modification in Mozilla Firefox before 25 allows remote attackers to overlay plugin warnings through crafted web content. XML pretty-printing bypasses security wrappers and lets page script alter anonymous content in the pluginProblem.xml XBL binding. A user must load the crafted content; exploitation enables clickjacking or interface spoofing without reported data disclosure or service interruption.

CVSS severity4.3
Medium
EPSS probability0.68%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

UI content modification in Mozilla Firefox before 25 allows remote attackers to overlay plugin warnings through crafted web content. XML pretty-printing bypasses security wrappers and lets page script alter anonymous content in the pluginProblem.xml XBL binding. A user must load the crafted content; exploitation enables clickjacking or interface spoofing without reported data disclosure or service interruption.

The record

CVE
CVE-2013-5594
Published
Feb 18, 2020
Updated
Aug 6, 2024
Vendor
Mozilla
Product
Firefox
Classifications
CWE-1021, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 18, 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

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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=before 2013

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Mozilla · Firefoxversion=before 2013

Published CVSS scores

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

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 exploitPublished

Weakness, pattern, technique

CWE-1021Improper Restriction of Rendered UI Layers or Frames
T1203Exploitation for Client Execution

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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