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Servers and applications

CVE-2020-7957

The IMAP and LMTP components in Dovecot 2.3.9 before 2.3.9.3 mishandle snippet generation when many characters must be read to compute the snippet and a trailing > character exists. This causes a denial of service in which the recipient cannot read all of their messages.

Severity
Medium 5.3
Published
12 Feb 2020
Last changed
17 Jun 2026
Added to UpHeron
1 Nov 2026
Fixed in
2.3.9.3
Sources
NVD

Affected software

SoftwareAffected versions
DovecotServers and applications · cpe:a:dovecot:dovecot
  • From 2.3.9 before 2.3.9.3

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2020-7957
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2020-7957