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CVE-2026-126135: Mozilla Thunderbird: If an attacker was able to perform a man-in-the-middle attack on an SMTP or POP3 server connection using STARTTLS, the…

🗓️ 10 Nov 2026 00:00:00Reported by Rapid7Type 
rapid7
 rapid7
🔗 www.rapid7.com

Man-in-the-middle attack on SMTP or POP3 STARTTLS allows injecting server responses.

Related
Refs
ReporterTitlePublishedViews
Family
circl
Circl
CVE-2026-126135
10 Nov 202619:58
–circl
cve
CVE
CVE-2026-126135
10 Nov 202618:59
–cve
cvelist
Cvelist
CVE-2026-126135 SMTP and POP3 response injection when using STARTTLS
10 Nov 202618:59
–cvelist
euvd
EUVD
EUVD-2026-122689
10 Nov 202621:33
–euvd
mozilla
Mozilla
Security Vulnerabilities fixed in Thunderbird 160 — Mozilla
10 Nov 202600:00
–mozilla
mozilla
Mozilla
Security Vulnerabilities fixed in Thunderbird 153.7 — Mozilla
10 Nov 202600:00
–mozilla
nvd
NVD
CVE-2026-126135
10 Nov 202619:21
–nvd

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