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TI-2021-08517 Aliases CVE-2021-26911GHSA-hw2c-8pmg-px6w

core/imap/MCIMAPSession.cpp in Canary Mail before 3.22 has Missing SSL Certificate Validation for IMAP in STARTTLS mode.

Priority LOW 35CWE-295Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
High
Impact type
Spoofing
Confidentiality · integrity · availability
High · High · None
Fix status
No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-295.

Summary

core/imap/MCIMAPSession.cpp in Canary Mail before 3.22 has Missing SSL Certificate Validation for IMAP in STARTTLS mode.

Why it matters now

EPSS 0.0109 65th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 3

CPEVersionsRoleVendor
cpe:2.3:a:canarymail:canary_mail:3.20:*:*:*:*:iphone_os:*:*3.20VulnerableCanarymail
cpe:2.3:a:canarymail:canary_mail:3.21:*:*:*:*:iphone_os:*:*3.21VulnerableCanarymail
cpe:2.3:a:libmailcore:mailcore2:0.6.4:*:*:*:*:*:*:*0.6.4VulnerableLibmailcore
  • cpe:2.3:a:canarymail:canary_mail:3.20:*:*:*:*:iphone_os:*:* Versions 3.20 Vulnerable ·Canarymail
  • cpe:2.3:a:canarymail:canary_mail:3.21:*:*:*:*:iphone_os:*:* Versions 3.21 Vulnerable ·Canarymail
  • cpe:2.3:a:libmailcore:mailcore2:0.6.4:*:*:*:*:*:*:* Versions 0.6.4 Vulnerable ·Libmailcore

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-26911
  2. 2026-10-03 Alias added: GHSA-hw2c-8pmg-px6w

References

Exploit 1

Patch 3

Advisory 2

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences