CVE-2022-3032Network attack vector

Information disclosure via unblocked nested remote content

Published Dec 22, 2022 · Updated Nov 19, 2024

Information disclosure in Mozilla Thunderbird before 102.2.1 and before 91.13.1 allows remote attackers to trigger remote content loads. The HTML email renderer fails to apply remote-content blocking to objects in the document supplied by an iframe srcdoc attribute. Viewing a crafted HTML email initiates network requests and displays attacker-selected images or videos despite remote-content blocking.

CVSS severity6.5
Medium
EPSS probability0.66%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information disclosure in Mozilla Thunderbird before 102.2.1 and before 91.13.1 allows remote attackers to trigger remote content loads. The HTML email renderer fails to apply remote-content blocking to objects in the document supplied by an iframe srcdoc attribute. Viewing a crafted HTML email initiates network requests and displays attacker-selected images or videos despite remote-content blocking.

The record

CVE
CVE-2022-3032
Published
Dec 22, 2022
Updated
Nov 19, 2024
Vendor
Mozilla
Product
Thunderbird
Classifications
CWE-610, T1204.002
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 22, 2022CVE publishedPublication date reported by the CVE source.
  2. Nov 19, 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=unspecified <102.2.1
  2. Affected versionversion=unspecified <91.13.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Mozilla · Thunderbirdversion=unspecified <102.2.1; version=unspecified <91.13.1

Published CVSS scores

6.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/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-610Externally Controlled Reference to a Resource in Another Sphere
T1204.002User Execution: Malicious File

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

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Your stack

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