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CVE-2022-3033· NVD / CVE Program· CNA mozilla

If a Thunderbird user replied to a crafted HTML email containing a <code>meta</code> tag, with the <code>meta</code> tag having the <code>ht

Noroxi assessment

Priority: Monitor (action score 32/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.77% (FIRST EPSS); higher than 55% of all records.
  • Anyone who can reach it over the internet can trigger it. No account or password is required. A user must open a link or visit a page. No special conditions are required; it is repeatable.
  • Fixed version: thunderbird (AlmaLinux:8) 102.3.0-3.el8_6.alma; thunderbird (AlmaLinux:9) 102.3.0-3.el9_0.alma; thunderbird (Debian:12) 1:102.2.1-1.

Low priority for now. Upgrade to thunderbird (AlmaLinux:8) 102.3.0-3.el8_6.alma; thunderbird (AlmaLinux:9) 102.3.0-3.el9_0.alma; thunderbird (Debian:12) 1:102.2.1-1 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

If a Thunderbird user replied to a crafted HTML email containing a <code>meta</code> tag, with the <code>meta</code> tag having the <code>http-equiv="refresh"</code> attribute, and the content attribute specifying an URL, then Thunderbird started a network request to that URL, regardless of the configuration to block remote content. In combination with certain other HTML elements and attributes in the email, it was possible to execute JavaScript code included in the message in the context of the message compose document. The JavaScript code was able to perform actions including, but probably not limited to, read and modify the contents of the message compose document, including the quoted original message, which could potentially contain the decrypted plaintext of encrypted data in the crafted email. The contents could then be transmitted to the network, either to the URL specified in the META refresh tag, or to a different URL, as the JavaScript code could modify the URL specified in the document. This bug doesn't affect users who have changed the default Message Body display setting to 'simple html' or 'plain text'. This vulnerability affects Thunderbird < 102.2.1 and Thunderbird < 91.13.1.

HighCVSS 8.1 · v3.1—No exploit Fix available
Published
Dec 22, 2022
Updated
Jun 17, 2026
EPSS
0.7% · 55th percentile

Report tools

JSON

Action score

32

Monitor

Low priority for now.

CVSS
32 / 40 · 8.1 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.7%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
total

Vulnrichment: CISA's decision-tree inputs.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2022-3033

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
mozillathunderbird

Limit the impact of XSS

This is a cross-site scripting (XSS) vulnerability. A well-configured Content-Security-Policy doesn't fix it, but greatly reduces its impact. Check your site's CSP and other security headers for free.

Check security headers

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • mozilla thunderbirdbefore 91.13.1
  • mozilla thunderbird102.0 and later · before 102.2.1

Versions reported by the vendor

Affected version ranges reported by the assigning authority (mozilla). Independent of NVD's CPE analysis and usually ahead of it.

  • Mozilla Thunderbird

    • unspecified and later · before 102.2.1affected
    • unspecified and later · before 91.13.1affected

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
AlmaLinux:8thunderbirdbefore 102.3.0-3.el8_6.alma102.3.0-3.el8_6.alma
AlmaLinux:9thunderbirdbefore 102.3.0-3.el9_0.alma102.3.0-3.el9_0.alma
Debian:12thunderbirdbefore 1:102.2.1-11:102.2.1-1
openSUSE:TumbleweedMozillaThunderbirdbefore 102.2.1-1.1102.2.1-1.1
Red Hat:enterprise_linux:7::clientthunderbirdbefore 0:102.3.0-3.el7_90:102.3.0-3.el7_9
Red Hat:enterprise_linux:7::clientthunderbird-debuginfobefore 0:102.3.0-3.el7_90:102.3.0-3.el7_9
Red Hat:enterprise_linux:8::appstreamthunderbirdbefore 0:102.3.0-3.el8_60:102.3.0-3.el8_6
Red Hat:enterprise_linux:8::appstreamthunderbird-debuginfobefore 0:102.3.0-3.el8_60:102.3.0-3.el8_6
Red Hat:enterprise_linux:8::appstreamthunderbird-debugsourcebefore 0:102.3.0-3.el8_60:102.3.0-3.el8_6
Red Hat:enterprise_linux:9::appstreamthunderbirdbefore 0:102.3.0-3.el9_00:102.3.0-3.el9_0
Red Hat:enterprise_linux:9::appstreamthunderbird-debuginfobefore 0:102.3.0-3.el9_00:102.3.0-3.el9_0
Red Hat:enterprise_linux:9::appstreamthunderbird-debugsourcebefore 0:102.3.0-3.el9_00:102.3.0-3.el9_0
Red Hat:rhel_e4s:8.1::appstreamthunderbirdbefore 0:102.3.0-3.el8_10:102.3.0-3.el8_1
Red Hat:rhel_e4s:8.1::appstreamthunderbird-debuginfobefore 0:102.3.0-3.el8_10:102.3.0-3.el8_1
Red Hat:rhel_e4s:8.1::appstreamthunderbird-debugsourcebefore 0:102.3.0-3.el8_10:102.3.0-3.el8_1
Red Hat:rhel_eus:8.2::appstreamthunderbirdbefore 0:102.3.0-3.el8_20:102.3.0-3.el8_2
Red Hat:rhel_eus:8.2::appstreamthunderbird-debuginfobefore 0:102.3.0-3.el8_20:102.3.0-3.el8_2
Red Hat:rhel_eus:8.2::appstreamthunderbird-debugsourcebefore 0:102.3.0-3.el8_20:102.3.0-3.el8_2
Red Hat:rhel_eus:8.4::appstreamthunderbirdbefore 0:102.3.0-3.el8_40:102.3.0-3.el8_4
Red Hat:rhel_eus:8.4::appstreamthunderbird-debuginfobefore 0:102.3.0-3.el8_40:102.3.0-3.el8_4
Red Hat:rhel_eus:8.4::appstreamthunderbird-debugsourcebefore 0:102.3.0-3.el8_40:102.3.0-3.el8_4
Rocky Linux:8thunderbirdbefore 0:102.3.0-3.el8_60:102.3.0-3.el8_6
SUSE:Linux Enterprise Module for Package Hub 15 SP3MozillaThunderbirdbefore 102.2.2-150200.8.82.1102.2.2-150200.8.82.1
SUSE:Linux Enterprise Module for Package Hub 15 SP3MozillaThunderbirdbefore 102.2.2-150200.8.82.1102.2.2-150200.8.82.1

Same product

mozilla: all records

Other highest-scoring records for the same primary product.

  • CVE-2019-11705A flaw in Thunderbird's implementation of iCal causes a stack buffer overflow in icalrecur_add_bydayrules when processing certain email mess
    42Plan
  • CVE-2019-11704A flaw in Thunderbird's implementation of iCal causes a heap buffer overflow in icalmemory_strdup_and_dequote when processing certain email
    42Plan
  • CVE-2019-11703A flaw in Thunderbird's implementation of iCal causes a heap buffer overflow in parser_get_next_char when processing certain email messages,
    42Plan

Published before and after this one in the same product

  • ← EarlierCVE-2022-2226Dec 22, 2022 · An OpenPGP digital signature includes information about the date when the signature was created.
    26Monitor
  • ← EarlierCVE-2022-3032Dec 22, 2022 · When receiving an HTML email that contained an <code>iframe</code> element, which used a <code>srcdoc</code> attribute to define the inner H
    26Monitor
  • Later →CVE-2022-3034Dec 22, 2022 · When receiving an HTML email that specified to load an <code>iframe</code> element from a remote location, a request to the remote document
    17Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
almalinux:thunderbird102.3.0-3.el8_6.alma · AlmaLinux:8Package registry (OSV)
debian:thunderbird1:102.2.1-1 · Debian:12Package registry (OSV)
opensuse:MozillaThunderbird102.2.2-150200.8.82.1 · openSUSE:Leap 15.3Package registry (OSV)
red hat:thunderbird0:102.3.0-3.el8_6 · Red Hat:enterprise_linux:8::appstreamPackage registry (OSV)
red hat:thunderbird-debuginfo0:102.3.0-3.el8_6 · Red Hat:enterprise_linux:8::appstreamPackage registry (OSV)
red hat:thunderbird-debugsource0:102.3.0-3.el8_6 · Red Hat:enterprise_linux:8::appstreamPackage registry (OSV)
rocky linux:thunderbird0:102.3.0-3.el8_6 · Rocky Linux:8Package registry (OSV)
suse:MozillaThunderbird102.2.2-150200.8.82.1 · SUSE:Linux Enterprise Module for Package Hub 15 SP3Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • No account or password is required.
  • A user must open a link or visit a page.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
high · data can be read
Integrity
high · data or configuration can be modified
Availability
none
Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
Required
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
None

Weakness class (CWE)

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

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N

nvd-primary

Root cause

User content is inserted into the page as HTML. The browser interprets the content as code rather than data.

The bug in code

The whole CWE-79 class

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

Vulnerable

ts
commentEl.innerHTML = comment.body;

Fixed

ts
commentEl.textContent = comment.body;

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

ATT&CK techniques

—

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (2 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records