🛡️ OESA-2026-2936 — thunderbird
Description
thunderbird security update
Mozilla Thunderbird is a standalone mail and newsgroup client.
Security Fix(es):
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.(CVE-2026-57962)
An attacker who can send HTML chat messages (via Matrix or XMPP) can inject arbitrary styled content, phishing links, and CSS that manipulates the chat UI. This vulnerability was fixed in Thunderbird 152.0.1 and Thunderbird 140.12.1.(CVE-2026-57963)
Affected software
OESA-2026-2936 is recorded against 1 package.
- thunderbird (fixed in 140.12.1-1.oe2403sp3)
Timeline and source
Published on 9 July 2026 and last revised on 14 July 2026. No public exploit is currently recorded for this entry. Record sourced from OSV.
References
www.openeuler.org (Advisory)
nvd.nist.gov (Advisory)
nvd.nist.gov (Advisory)
Details
Affected Packages
| Software | From version | Fixed in |
|---|---|---|
| thunderbird | — | 140.12.1-1.oe2403sp3 |
References
Similar Threats
- Unknown ALSA-2022:8547
- Unknown ALSA-2022:8561
- Unknown ALSA-2022:7178
- Unknown ALSA-2022:7190
- Unknown ALSA-2022:7023
More OESA 2026 advisories
Browse all of OESA 2026 in the advisory index.
Vulnerability Monitoring
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