MEDIUMCVSS v3.1 5.9Vulnerability
CVE-2026-113866
When setting up an account, Thunderbird's Exchange AutoDiscover lookup also queried the domain's AutoDiscover service over plain HTTP. Due to a bug, that unencrypted request included the credentials the user had entered, allowing a network attacker to obtain the user's password. This vulnerability was fixed in Thunderbird 158.0.1 and Thunderbird 153.5.1.
Properties
- Severity
- MEDIUM
- Nvd fetched at
- 2026-10-20T21:14:08.448323+00:00
- Cvss score
- 5.9
- Cvss severity
- MEDIUM
- Retrieved at
- 2026-10-20T21:15:35+00:00
- Score
- 5.9
- Last source
- NVD
- Cvss version
- 3.1
- Cve id
- CVE-2026-113866
- Cvss vector
- CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
- First seen by Signal
- 2026-10-20T21:15:35+00:00
- Vector
- CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
- Published at
- 2026-10-20T20:17:19.397
- Last modified
- 2026-10-20T20:17:19.397
Related Entities (1)
HAS_WEAKNESS (1)
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