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OPENSUSE-SU-2026:20002-1 Not scored

Security update for MozillaThunderbird

This update for MozillaThunderbird fixes the following issues: Changes in MozillaThunderbird: Mozilla Thunderbird 140.5.0 ESR MFSA 2025-91 (bsc#1253188): * CVE-2025-13012 Race condition in the Graphics component * CVE-2025-13016 Incorrect boundary conditions in the JavaScript: WebAssembly component * CVE-2025-13017 Same-origin policy bypass in the DOM: Notifications component * CVE-2025-13018 Mitigation bypass in the DOM: Security component * CVE-2025-13019 Same-origin policy bypass in the DOM: Workers component * CVE-2025-13013 Mitigation bypass in the DOM: Core & HTML component * CVE-2025-13020 Use-after-free in the WebRTC: Audio/Video component * CVE-2025-13014 Use-after-free in the Audio/Video component * CVE-2025-13015 Spoofing issue in Thunderbird * fixed: Could not drag and drop ICS file to Today Pane * fixed: With Thunderbird closed, clicking a 'mailto:' link to send signed message failed * fixed: Upgrade from 128.x->140.x broke authentication for @att.net using Yahoo backend Mozilla Thunderbird 140.4.0 ESR * Account Hub is now disabled by default for second email account * Users could not read mail signed with OpenPGP v6 and PQC keys * Image preview in Insert Image dialog failed with CSP error for web resources * Emptying trash on exit did not work with some providers * Thunderbird could crash when applying filters * Users were unable to override expired mail server certificate * Opening Website header link in RSS feed incorrectly re-encoded URL parameters Mozilla Thunderbird 140.3.1 ESR: * several bugfixes listed here https://www.thunderbird.net/en-US/thunderbird/140.3.1esr/releasenotes -------------------------------------------------------------------

Exploit probability Not scored
Published January 2, 2026
Required by Not available
Last source change March 23, 2026

02 / AFFECTED SOFTWARE

Affected packages

openSUSE:Leap 16.0 MozillaThunderbird

03 / CONNECTIONS

Connected vulnerabilities

04 / EVIDENCE

Source records

Open Source Vulnerabilities openSUSE-SU-2026:20002-1

This update for MozillaThunderbird fixes the following issues: Changes in MozillaThunderbird: Mozilla Thunderbird 140.5.0 ESR MFSA 2025-91 (bsc#1253188): * CVE-2025-13012 Race condition in the Graphics component * CVE-2025-13016 Incorrect boundary conditions in the JavaScript: WebAssembly component * CVE-2025-13017 Same-origin policy bypass in the DOM: Notifications component * CVE-2025-13018 Mitigation bypass in the DOM: Security component * CVE-2025-13019 Same-origin policy bypass in the DOM: Workers component * CVE-2025-13013 Mitigation bypass in the DOM: Core & HTML component * CVE-2025-13020 Use-after-free in the WebRTC: Audio/Video component * CVE-2025-13014 Use-after-free in the Audio/Video component * CVE-2025-13015 Spoofing issue in Thunderbird * fixed: Could not drag and drop ICS file to Today Pane * fixed: With Thunderbird closed, clicking a 'mailto:' link to send signed message failed * fixed: Upgrade from 128.x->140.x broke authentication for @att.net using Yahoo backend Mozilla Thunderbird 140.4.0 ESR * Account Hub is now disabled by default for second email account * Users could not read mail signed with OpenPGP v6 and PQC keys * Image preview in Insert Image dialog failed with CSP error for web resources * Emptying trash on exit did not work with some providers * Thunderbird could crash when applying filters * Users were unable to override expired mail server certificate * Opening Website header link in RSS feed incorrectly re-encoded URL parameters Mozilla Thunderbird 140.3.1 ESR: * several bugfixes listed here https://www.thunderbird.net/en-US/thunderbird/140.3.1esr/releasenotes -------------------------------------------------------------------

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05 / REFERENCES

Further evidence