CVE-2022-48521

Severity: medium (CVSS 5.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.7% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2023-07-11 · updated 2026-06-17

Description

An issue was discovered in OpenDKIM through 2.10.3, and 2.11.x through 2.11.0-Beta2. It fails to keep track of ordinal numbers when removing fake Authentication-Results header fields, which allows a remote attacker to craft an e-mail message with a fake sender address such that programs that rely on Authentication-Results from OpenDKIM will treat the message as having a valid DKIM signature when in fact it has none.

Affected products

Opendkim: through 2.10.3; 2.11.0-beta0, 2.11.0-beta1, 2.11.0-beta2

References

https://github.com/trusteddomainproject/OpenDKIM/issues/148
https://lists.debian.org/debian-lts-announce/2023/12/msg00002.html
https://github.com/trusteddomainproject/OpenDKIM/issues/148
https://lists.debian.org/debian-lts-announce/2023/12/msg00002.html

Get alerted when CVE-2022-48521 or the next vulnerability affects your stack