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CVE-2026-4711

Medium priority
Vulnerable

Use-after-free in the Widget: Cocoa component. This vulnerability was fixed in Firefox 149, Firefox ESR 140.9, Thunderbird 149, and Thunderbird 140.9.

9 affected packages

firefox, mozjs102, mozjs115, mozjs38, mozjs52...

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
firefox Not affected Not affected Not affected — —
mozjs102 Not in release Ignored Ignored — —
mozjs115 Not in release Ignored Not in release — —
mozjs38 Not in release Not in release Not in release — Needs evaluation
mozjs52 Not in release Not in release Not in release Ignored Ignored
mozjs68 Not in release Not in release Not in release Ignored —
mozjs78 Not in release Not in release Ignored — —
mozjs91 Not in release Not in release Ignored — —
thunderbird Not affected Not affected Vulnerable — —
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CVE-2026-4710

Medium priority
Vulnerable

Incorrect boundary conditions in the Audio/Video component. This vulnerability was fixed in Firefox 149, Firefox ESR 140.9, Thunderbird 149, and Thunderbird 140.9.

9 affected packages

firefox, mozjs102, mozjs115, mozjs38, mozjs52...

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
firefox Not affected Not affected Not affected — —
mozjs102 Not in release Ignored Ignored — —
mozjs115 Not in release Ignored Not in release — —
mozjs38 Not in release Not in release Not in release — Needs evaluation
mozjs52 Not in release Not in release Not in release Ignored Ignored
mozjs68 Not in release Not in release Not in release Ignored —
mozjs78 Not in release Not in release Ignored — —
mozjs91 Not in release Not in release Ignored — —
thunderbird Not affected Not affected Vulnerable — —
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CVE-2026-4709

Medium priority
Vulnerable

Incorrect boundary conditions in the Audio/Video: GMP component. This vulnerability was fixed in Firefox 149, Firefox ESR 115.34, Firefox ESR 140.9, Thunderbird 149, and Thunderbird 140.9.

9 affected packages

firefox, mozjs102, mozjs115, mozjs38, mozjs52...

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
firefox Not affected Not affected Not affected — —
mozjs102 Not in release Ignored Ignored — —
mozjs115 Not in release Ignored Not in release — —
mozjs38 Not in release Not in release Not in release — Needs evaluation
mozjs52 Not in release Not in release Not in release Ignored Ignored
mozjs68 Not in release Not in release Not in release Ignored —
mozjs78 Not in release Not in release Ignored — —
mozjs91 Not in release Not in release Ignored — —
thunderbird Not affected Not affected Vulnerable — —
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CVE-2026-4708

Medium priority
Vulnerable

Incorrect boundary conditions in the Graphics component. This vulnerability was fixed in Firefox 149, Firefox ESR 140.9, Thunderbird 149, and Thunderbird 140.9.

9 affected packages

firefox, mozjs102, mozjs115, mozjs38, mozjs52...

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
firefox Not affected Not affected Not affected — —
mozjs102 Not in release Ignored Ignored — —
mozjs115 Not in release Ignored Not in release — —
mozjs38 Not in release Not in release Not in release — Needs evaluation
mozjs52 Not in release Not in release Not in release Ignored Ignored
mozjs68 Not in release Not in release Not in release Ignored —
mozjs78 Not in release Not in release Ignored — —
mozjs91 Not in release Not in release Ignored — —
thunderbird Not affected Not affected Vulnerable — —
Show all 9 packages Show less packages

CVE-2026-4707

Medium priority
Vulnerable

Incorrect boundary conditions in the Graphics: Canvas2D component. This vulnerability was fixed in Firefox 149, Firefox ESR 115.34, Firefox ESR 140.9, Thunderbird 149, and Thunderbird 140.9.

9 affected packages

firefox, mozjs102, mozjs115, mozjs38, mozjs52...

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
firefox Not affected Not affected Not affected — —
mozjs102 Not in release Ignored Ignored — —
mozjs115 Not in release Ignored Not in release — —
mozjs38 Not in release Not in release Not in release — Needs evaluation
mozjs52 Not in release Not in release Not in release Ignored Ignored
mozjs68 Not in release Not in release Not in release Ignored —
mozjs78 Not in release Not in release Ignored — —
mozjs91 Not in release Not in release Ignored — —
thunderbird Not affected Not affected Vulnerable — —
Show all 9 packages Show less packages

CVE-2026-4706

Medium priority
Vulnerable

Incorrect boundary conditions in the Graphics: Canvas2D component. This vulnerability was fixed in Firefox 149, Firefox ESR 115.34, Firefox ESR 140.9, Thunderbird 149, and Thunderbird 140.9.

9 affected packages

firefox, mozjs102, mozjs115, mozjs38, mozjs52...

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
firefox Not affected Not affected Not affected — —
mozjs102 Not in release Ignored Ignored — —
mozjs115 Not in release Ignored Not in release — —
mozjs38 Not in release Not in release Not in release — Needs evaluation
mozjs52 Not in release Not in release Not in release Ignored Ignored
mozjs68 Not in release Not in release Not in release Ignored —
mozjs78 Not in release Not in release Ignored — —
mozjs91 Not in release Not in release Ignored — —
thunderbird Not affected Not affected Vulnerable — —
Show all 9 packages Show less packages

CVE-2026-4705

Medium priority
Vulnerable

Undefined behavior in the WebRTC: Signaling component. This vulnerability was fixed in Firefox 149, Firefox ESR 140.9, Thunderbird 149, and Thunderbird 140.9.

9 affected packages

firefox, mozjs102, mozjs115, mozjs38, mozjs52...

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
firefox Not affected Not affected Not affected — —
mozjs102 Not in release Ignored Ignored — —
mozjs115 Not in release Ignored Not in release — —
mozjs38 Not in release Not in release Not in release — Needs evaluation
mozjs52 Not in release Not in release Not in release Ignored Ignored
mozjs68 Not in release Not in release Not in release Ignored —
mozjs78 Not in release Not in release Ignored — —
mozjs91 Not in release Not in release Ignored — —
thunderbird Not affected Not affected Vulnerable — —
Show all 9 packages Show less packages

CVE-2026-4704

Medium priority
Vulnerable

Denial-of-service in the WebRTC: Signaling component. This vulnerability was fixed in Firefox 149, Firefox ESR 140.9, Thunderbird 149, and Thunderbird 140.9.

9 affected packages

firefox, mozjs102, mozjs115, mozjs38, mozjs52...

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
firefox Not affected Not affected Not affected — —
mozjs102 Not in release Ignored Ignored — —
mozjs115 Not in release Ignored Not in release — —
mozjs38 Not in release Not in release Not in release — Needs evaluation
mozjs52 Not in release Not in release Not in release Ignored Ignored
mozjs68 Not in release Not in release Not in release Ignored —
mozjs78 Not in release Not in release Ignored — —
mozjs91 Not in release Not in release Ignored — —
thunderbird Not affected Not affected Vulnerable — —
Show all 9 packages Show less packages

CVE-2026-4702

Medium priority
Vulnerable

JIT miscompilation in the JavaScript Engine component. This vulnerability was fixed in Firefox 149, Firefox ESR 140.9, Thunderbird 149, and Thunderbird 140.9.

9 affected packages

firefox, mozjs102, mozjs115, mozjs38, mozjs52...

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
firefox Not affected Not affected Not affected — —
mozjs102 Not in release Ignored Ignored — —
mozjs115 Not in release Ignored Not in release — —
mozjs38 Not in release Not in release Not in release — Needs evaluation
mozjs52 Not in release Not in release Not in release Ignored Ignored
mozjs68 Not in release Not in release Not in release Ignored —
mozjs78 Not in release Not in release Ignored — —
mozjs91 Not in release Not in release Ignored — —
thunderbird Not affected Not affected Vulnerable — —
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CVE-2026-4701

Medium priority
Vulnerable

Use-after-free in the JavaScript Engine component. This vulnerability was fixed in Firefox 149, Firefox ESR 140.9, Thunderbird 149, and Thunderbird 140.9.

9 affected packages

firefox, mozjs102, mozjs115, mozjs38, mozjs52...

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
firefox Not affected Not affected Not affected — —
mozjs102 Not in release Ignored Ignored — —
mozjs115 Not in release Ignored Not in release — —
mozjs38 Not in release Not in release Not in release — Needs evaluation
mozjs52 Not in release Not in release Not in release Ignored Ignored
mozjs68 Not in release Not in release Not in release Ignored —
mozjs78 Not in release Not in release Ignored — —
mozjs91 Not in release Not in release Ignored — —
thunderbird Not affected Not affected Vulnerable — —
Show all 9 packages Show less packages