Read the docs
TI-2022-01393 Aliases CVE-2022-1520GHSA-3qrc-jgqf-vg35

Origin validation error in Mozilla Thunderbird

Priority LOW 20CWE-346Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
Security bypass
Confidentiality · integrity · availability
None · Low · None
Fix status
Partial Red Hat: 8 fixed, 1 without a fix

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA and Red Hat. Impact type from CWE-346.

Summary

When viewing an email message A, which contains an attached message B, where B is encrypted or digitally signed or both, Thunderbird may show an incorrect encryption or signature status. After opening and viewing the attached message B, when returning to the display of message A, the message A might be shown with the security status of message B. This vulnerability affects Thunderbird < 91.9.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00278 20th percentileScored 2026-11-07
Fix Partial Thunderbird (Mozilla): 91.9Red Hat: 6 advisoriesRed Hat: 8 fixed, 1 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
MozillaThunderbirdbefore 91.991.9Patch availableCNA
  • Thunderbird VendorMozilla Affected before 91.9 Fixed in 91.9 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*before 91.9VulnerableMozilla
  • cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:* Versions before 91.9 Vulnerable ·Mozilla

Remediation

  • Fix · CNA Thunderbird (Mozilla) Fixed in 91.9

Red Hat 6 advisories

  • RHSA-2022:4589 Released 2022-05-18 · Red Hat rating Important
    thunderbird security update
    • Red Hat Enterprise Linux AppStream (v. 9) thunderbird-91.9.0-3.el9_0
  • RHSA-2022:1725 Released 2022-05-05 · Red Hat rating Important
    thunderbird security update
    • Red Hat Enterprise Linux Client (v. 7) thunderbird-91.9.0-3.el7_9
    • Red Hat Enterprise Linux Server Optional (v. 7) thunderbird-91.9.0-3.el7_9
    • Red Hat Enterprise Linux Workstation (v. 7) thunderbird-91.9.0-3.el7_9
  • RHSA-2022:1730 Released 2022-05-05 · Red Hat rating Important
    thunderbird security update
    • Red Hat Enterprise Linux AppStream (v. 8) thunderbird-91.9.0-3.el8_5
Show 3 more Red Hat advisories
  • RHSA-2022:1726 Released 2022-05-05 · Red Hat rating Important
    thunderbird security update
    • Red Hat Enterprise Linux AppStream EUS (v.8.4) thunderbird-91.9.0-3.el8_4
  • RHSA-2022:1727 Released 2022-05-05 · Red Hat rating Important
    thunderbird security update
    • Red Hat Enterprise Linux AppStream E4S (v. 8.1) thunderbird-91.9.0-3.el8_1
  • RHSA-2022:1724 Released 2022-05-05 · Red Hat rating Important
    thunderbird security update
    • Red Hat Enterprise Linux AppStream EUS (v. 8.2) thunderbird-91.9.0-3.el8_2

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    Mozilla Thunderbird 91.9

    8 records Highest priority Priority HIGH 1 HIGH, 1 MEDIUM, 6 LOW

    Other records, highest priority first

    • TI-2022-12260 Incorrect default permissions in Mozilla ThunderbirdPriority HIGH 73
    • TI-2022-12268 Out-of-bounds write in Mozilla ThunderbirdPriority MEDIUM 51
    • TI-2022-12267 Information disclosure in Mozilla ThunderbirdPriority LOW 30
    Show all 8 records →

Vendor assessments

Red Hat

Red Hat rating: Low. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux 6AffectedNo fix planned: Out of support scope
Red Hat Enterprise Linux AppStream (v. 8)Fixed RHSA-2022:1730
Red Hat Enterprise Linux AppStream (v. 9)Fixed RHSA-2022:4589
Red Hat Enterprise Linux AppStream E4S (v. 8.1)Fixed RHSA-2022:1727
Red Hat Enterprise Linux AppStream EUS (v. 8.2)Fixed RHSA-2022:1724
Red Hat Enterprise Linux AppStream EUS (v.8.4)Fixed RHSA-2022:1726
Red Hat Enterprise Linux Client (v. 7)Fixed RHSA-2022:1725
Red Hat Enterprise Linux Server Optional (v. 7)Fixed RHSA-2022:1725
Red Hat Enterprise Linux Workstation (v. 7)Fixed RHSA-2022:1725

Timeline

  1. 2026-10-02 Threatist record created from CVE-2022-1520
  2. 2026-10-03 Alias added: GHSA-3qrc-jgqf-vg35

References

Advisory 2

  • TI-2024-08981 Use after free in Mozilla Firefox KEVCVSS 3.1CRITICAL 9.8
  • TI-2022-09832 Use after free in Mozilla Firefox KEVCVSS 3.1CRITICAL 9.6
  • TI-2019-08769 Improper input validation in Mozilla Firefox ESR KEVCVSS 3.1CRITICAL 10.0
  • TI-2010-03577 Mozilla Firefox 3.5.x through 3.5.14 and 3.6.x through 3.6.11, Thunderbird 3.1.6 before… KEVCVSS 3.1CRITICAL 9.8
  • TI-2023-04799 Out-of-bounds write in Google Chrome KEVCVSS 3.1HIGH 8.8
  • TI-2023-04477 Out-of-bounds write in Google Chrome KEVCVSS 3.1HIGH 8.8
See all 2067 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences