CVE-2026-100888 Trusted Domain Project OpenDKIM - Out of Bounds Read/Write

Trusted Domain Project OpenDKIM <= 2.11.0 contains an out-of-bounds write caused by improper handling of the "h" argument in dkim_canon_selecthdrs function, letting remote attackers corrupt memory, exploit requires crafted input.

CVSS base score 7.3 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.29% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Out of Bounds Read/Write
Impact
Denial Of Service
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
Published
28 September 2026
Updated
15 October 2026
Weakness
CWE-119

Vendor fix

Update to the latest version beyond 2.11.0.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

← All CVEs