CVE-2026-57962
Denial-of-service via malicious LDAP address-book server
- State
- Published
- Severity
- 5.3 Medium
- Published
- Jul 1, 2026
- Updated
- Jul 1, 2026
- Reserved
- Jun 26, 2026
Description
A malicious LDAP server, which a Thunderbird user is configured to query for address-book autocomplete, can stash arbitrarily large amounts of attacker-supplied data into the Thunderbird LDAP client until it crashes due to memory exhaustion. This vulnerability was fixed in Thunderbird 152.0.1 and Thunderbird 140.12.1.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 5.3 Medium | CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H | CISA-ADP |
Weaknesses
- CWE-400 Uncontrolled Resource Consumption
Affected Products
| Product | Versions |
|---|---|
ThunderbirdMozilla |
|
References
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