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CVE-2026-55558

🗓️ 20 Aug 2026 14:29:58Reported by Debian Security Bug TrackerType 
debiancve
 debiancve
🔗 security-tracker.debian.org👁 7 Views

aiosmtplib start_tls buffer not cleared allows active attacker to desync SMTP sessions.

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Rows per page
OSOS VersionArchitecturePackagePackage VersionFilename
Debian12allaiosmtplib2.0.0-1aiosmtplib_2.0.0-1_all.deb
Debian13allaiosmtplib4.0.0-1aiosmtplib_4.0.0-1_all.deb
Debian14allaiosmtplib5.1.2-1aiosmtplib_5.1.2-1_all.deb
Debian999allaiosmtplib5.1.2-1aiosmtplib_5.1.2-1_all.deb

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20 Aug 2026 14:29Current
5.6Medium risk
Vulners AI Score5.6
CVSS 3.15.9
EPSS0.00261
SSVC
7