Mozilla Thunderbird up to 102.6 URL cross-domain policy

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.3$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic has been found in Mozilla Thunderbird up to 102.6. This vulnerability affects unknown code of the component URL Handler. Performing a manipulation results in cross-domain policy. This vulnerability is reported as CVE-2023-23601. The attack is possible to be carried out remotely. No exploit exists. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability classified as problematic has been found in Mozilla Thunderbird up to 102.6 (Mail Client Software). This affects some unknown processing of the component URL Handler. The manipulation with an unknown input leads to a cross-domain policy vulnerability. CWE is classifying the issue as CWE-942. The product uses a cross-domain policy file that includes domains that should not be trusted. This is going to have an impact on integrity. The summary by CVE is:

Navigations were being allowed when dragging a URL from a cross-origin iframe into the same tab which could lead to website spoofing attacks This vulnerability affects Firefox < 109, Firefox ESR < 102.7, and Thunderbird < 102.7.

The weakness was disclosed 06/03/2023. It is possible to read the advisory at mozilla.org. This vulnerability is uniquely identified as CVE-2023-23601 since 01/16/2023. It demands that the victim is doing some kind of user interaction. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 12/18/2025).

The vulnerability scanner Nessus provides a plugin with the ID 248435 (Linux Distros Unpatched Vulnerability : CVE-2023-23601), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 102.7 eliminates this vulnerability. The upgrade is hosted for download at mozilla.org.

The vulnerability is also documented in the databases at Tenable (248435) and EUVD (EUVD-2023-27701). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

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Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.4
VulDB Meta Temp Score: 5.3

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

NVD Base Score: 6.5
NVD Vector: 🔍

CVSSv2info

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

Exploitinginfo

Class: Cross-domain policy
CWE: CWE-942 / CWE-346 / CWE-345
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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Nessus ID: 248435
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2023-23601

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Thunderbird 102.7

Timelineinfo

01/16/2023 🔍
06/03/2023 +137 days 🔍
06/03/2023 +0 days 🔍
12/18/2025 +929 days 🔍

Sourcesinfo

Vendor: mozilla.org

Advisory: mozilla.org
Status: Confirmed

CVE: CVE-2023-23601 (🔍)
GCVE (CVE): GCVE-0-2023-23601
GCVE (VulDB): GCVE-100-230607
EUVD: 🔍

Entryinfo

Created: 06/03/2023 07:36
Updated: 12/18/2025 20:58
Changes: 06/03/2023 07:36 (41), 08/12/2025 10:14 (17), 10/14/2025 05:14 (1), 12/18/2025 20:58 (12)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

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