Vulnerability · NVD

CVE-2026-110249

CVE-2026-110249, rated high by the vendor: 1 tracked app concerned, 1 still exposed on its current version.

Severity (CVSS): -
Exploitation: -
Tracked apps: 1
Still exposed: 1

Vendor bulletin scale : NVD CVSS pending Published on 2026-10-13

A malicious, compromised, or MITM-controlled Exchange server can return a single well-formed SOAP response containing an element with enough attributes to keep Thunderbird's main thread CPU-bound for seconds to hours. This vulnerability was fixed in Thunderbird 158 and Thunderbird 153.5.

Tracked apps referencing this CVE

For each app: the affected range, the fixing version, and where the tracked app stands today.

Mozilla Thunderbird Windows winget:Mozilla.Thunderbird

Affected <158 Fixed in 158 Latest tracked 157.0.1 still vulnerable

Observed affected builds (135)

157.0.1 157.0 156.0.1 156.0 155.0.1 155.0 154.0 153.0.3 153.0.2 153.0.1 153.0 152.0.1 152.0 151.0.1 151.0 150.0.2 150.0.1 150.0 149.0.2 149.0.1 149.0 148.0.1 148.0 147.0.2 147.0.1 147.0 146.0.1 146.0 145.0 144.0.1 +105 · see history

Vulnerable CPE configurations (1)

Vendor	Product	Platform	Versions	CPE 2.3 URI
mozilla	thunderbird All platforms (wildcard)	All platforms (wildcard)	<158	cpe:2.3:a:mozilla:thunderbird::::::::

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