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Fencer Vulns
medium 6.5

CVE-2022-2226 json

An OpenPGP digital signature includes information about the date when the signature was created.

published 2022-12-22 3 y ago modified 2026-06-17 4 mo ago also EUVD-2022-34506

cvss
6.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.4%
EPSS 0.4% chance of exploitation in 30 days, percentile 38%
public exploits
0
none known

Summary

An OpenPGP digital signature includes information about the date when the signature was created. When displaying an email that contains a digital signature, the email's date will be shown. If the dates were different, then Thunderbird didn't report the email as having an invalid signature. If an attacker performed a replay attack, in which an old email with old contents are resent at a later time, it could lead the victim to believe that the statements in the email are current. Fixed versions of Thunderbird will require that the signature's date roughly matches the displayed date of the email. This vulnerability affects Thunderbird < 102 and Thunderbird < 91.11.

Patch / fix

  • Mozilla Thunderbird 91.11, 102
  • thunderbird Debian 14, Debian 13, Debian 12 1:91.11.0-1

debian advisories DEBIAN-CVE-2022-2226

  • thunderbird Ubuntu 18.04 LTS 1:91.11.0+build2-0ubuntu0.18.04.1
  • thunderbird Ubuntu 20.04 LTS 1:91.11.0+build2-0ubuntu0.20.04.1
  • thunderbird Ubuntu 22.04 LTS 1:91.11.0+build2-0ubuntu0.22.04.1

ubuntu advisories UBUNTU-CVE-2022-2226

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • thunderbird RHEL 7 91.11.0-2.el7_9
  • thunderbird RHEL 9 91.11.0-2.el9_0
  • thunderbird RHEL 8 91.11.0-2.el8_6
  • thunderbird RHEL 8.2 EUS 91.11.0-2.el8_2
  • thunderbird RHEL 8.4 EUS 91.11.0-2.el8_4
  • thunderbird RHEL 8.1 E4S 91.11.0-2.el8_1

red hat advisories RHSA-2022:5475RHSA-2022:5480RHSA-2022:5482RHSA-2022:5470RHSA-2022:5473RHSA-2022:5478

  • MozillaThunderbird SLE Workstation Extension 15 SP4, SLE Workstation Extension 15 SP3, SLE Module for Package Hub 15 SP4 +3 more 102.2.2-150200.8.82.1
  • MozillaThunderbird SLE Workstation Extension 15 SP4, SLE Workstation Extension 15 SP3, SLE Module for Package Hub 15 SP4 +3 more 91.11.0-150200.8.76.1

suse advisories SUSE-SU-2022:3281-1SUSE-SU-2022:2320-1

  • MozillaThunderbird openSUSE Tumbleweed 91.11.0-1.1

opensuse advisories openSUSE-SU-2024:12161-1

  • thunderbird AlmaLinux 9 91.11.0-2.el9_0.alma

almalinux advisories ALSA-2022:5482

  • thunderbird Rocky Linux 8 91.11.0-2.el8_6

rocky linux advisories RLSA-2022:5470

  • thunderbird Alpine 3.16 91.11.0-r0
  • thunderbird Alpine 3.23, Alpine 3.22, Alpine 3.21 +4 more 102.0-r0
  • thunderbird Alpine 3.23, Alpine 3.22, Alpine 3.21 +4 more 102.1.0-r0

alpine advisories ALPINE-CVE-2022-2226

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2022-2226 updated cvss 6.1

Mozilla: An email with a mismatching OpenPGP signature date was accepted as valid

  • Red Hat Enterprise Linux 6 thunderbird
    affected: no fix planned “Out of support scope”
  • Red Hat Enterprise Linux AppStream (v. 8) thunderbird 91.11.0-2.el8_6
    fixed: vendor fix RHSA-2022:5470
  • Red Hat Enterprise Linux AppStream (v. 9) thunderbird 91.11.0-2.el9_0
    fixed: vendor fix RHSA-2022:5482
  • Red Hat Enterprise Linux AppStream E4S (v. 8.1) thunderbird 91.11.0-2.el8_1
    fixed: vendor fix RHSA-2022:5478
  • Red Hat Enterprise Linux AppStream EUS (v. 8.2) thunderbird 91.11.0-2.el8_2
    fixed: vendor fix RHSA-2022:5475
  • Red Hat Enterprise Linux AppStream EUS (v.8.4) thunderbird 91.11.0-2.el8_4
    fixed: vendor fix RHSA-2022:5473
  • Red Hat Enterprise Linux Client (v. 7) thunderbird 91.11.0-2.el7_9 Red Hat Enterprise Linux Server Optional (v. 7) thunderbird 91.11.0-2.el7_9 Red Hat Enterprise Linux Workstation (v. 7) thunderbird 91.11.0-2.el7_9
    fixed: vendor fix RHSA-2022:5480

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
18 mo ago

Exploit prediction

0.44% chance of exploitation in the next 30 days, higher than 38% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CISA ADP 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
NVD 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
CNA 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N

Affected products

  • Mozilla Thunderbird

Classification

Weakness
  • CWE-294 Authentication Bypass by Capture-replay

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.