Mozilla Thunderbird up to 91.6 SVG Object use after free

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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4.1$5k-$25k0.00

Summaryinfo

A vulnerability classified as problematic was found in Mozilla Thunderbird up to 91.6. This affects an unknown function of the component SVG Object Handler. Such manipulation leads to use after free. This vulnerability is listed as CVE-2022-26381. The attack may be performed from remote. There is no available exploit. Upgrading the affected component is advised.

Detailsinfo

A vulnerability was found in Mozilla Thunderbird up to 91.6 (Mail Client Software). It has been rated as problematic. Affected by this issue is an unknown function of the component SVG Object Handler. The manipulation with an unknown input leads to a use after free vulnerability. Using CWE to declare the problem leads to CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. Impacted is availability.

The weakness was presented 03/08/2022 by Hossein Lotfi as Bug 1736243 as confirmed advisory (Website). The advisory is shared for download at bugzilla.mozilla.org. The advisory contains:

An attacker could have caused a use-after-free by forcing a text reflow in an SVG object leading to a potentially exploitable crash.
This vulnerability is handled as CVE-2022-26381. Successful exploitation requires user interaction by the victim. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $5k-$25k (estimation calculated on 05/09/2026).

Upgrading to version 91.7 eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2022-30940). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.3
VulDB Meta Temp Score: 4.1

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Use after free
CWE: CWE-416 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Upgrade: Thunderbird 91.7

Timelineinfo

03/03/2022 🔍
03/08/2022 +5 days 🔍
03/08/2022 +0 days 🔍
09/29/2022 +205 days 🔍
05/09/2026 +1318 days 🔍

Sourcesinfo

Vendor: mozilla.org

Advisory: Bug 1736243
Researcher: Hossein Lotfi
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2022-26381 (🔍)
GCVE (CVE): GCVE-0-2022-26381
GCVE (VulDB): GCVE-100-209888
EUVD: 🔍

Entryinfo

Created: 09/29/2022 17:47
Updated: 05/09/2026 07:18
Changes: 09/29/2022 17:47 (18), 09/29/2022 17:50 (28), 10/26/2022 09:01 (1), 05/09/2026 07:18 (15)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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