Mozilla Thunderbird up to 91.5 Content Security Policy access control

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.0$0-$5k0.00

Summaryinfo

A vulnerability categorized as critical has been discovered in Mozilla Thunderbird up to 91.5. Affected is an unknown function of the component Content Security Policy. The manipulation results in access control. This vulnerability was named CVE-2022-22761. The attack may be performed from remote. There is no available exploit. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in Mozilla Thunderbird up to 91.5 (Mail Client Software). It has been classified as critical. Affected is an unknown functionality of the component Content Security Policy. The manipulation with an unknown input leads to a access control vulnerability. CWE is classifying the issue as CWE-284. The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor. This is going to have an impact on confidentiality, integrity, and availability.

The weakness was presented 02/08/2022 by Mart Gil Robles as Bug 1745566 as confirmed advisory (Website). The advisory is shared for download at bugzilla.mozilla.org. The advisory contains:

Web-accessible extension pages (pages with a moz-extension:// scheme) were not correctly enforcing the frame-ancestors directive when it was used in the Web Extension's Content Security Policy.
This vulnerability is traded as CVE-2022-22761. 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 $0-$5k (estimation calculated on 04/29/2026). The MITRE ATT&CK project declares the attack technique as T1068.

Upgrading to version 91.6 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-2022-27904). Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 6.0

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Access control
CWE: CWE-284 / CWE-266
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 91.6

Timelineinfo

01/07/2022 🔍
02/08/2022 +32 days 🔍
02/08/2022 +0 days 🔍
09/29/2022 +233 days 🔍
04/29/2026 +1308 days 🔍

Sourcesinfo

Vendor: mozilla.org

Advisory: Bug 1745566
Researcher: Mart Gil Robles
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2022-22761 (🔍)
GCVE (CVE): GCVE-0-2022-22761
GCVE (VulDB): GCVE-100-209868
EUVD: 🔍

Entryinfo

Created: 09/29/2022 17:06
Updated: 04/29/2026 08:29
Changes: 09/29/2022 17:06 (17), 09/29/2022 17:09 (12), 09/29/2022 17:10 (17), 10/26/2022 08:11 (1), 04/29/2026 08:29 (15)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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