CVE-2006-0631

CVE-2006-0631 is a medium-severity vulnerability in Erik C. Thauvin Mailback with a CVSS 2.0 base score of 5.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Description

CRLF injection vulnerability in mailback.pl in Erik C. Thauvin mailback allows remote attackers to use mailback as a "spam proxy" by modifying mail headers, including recipient e-mail addresses, via newline characters in the Subject field.

Frequently asked questions

What is CVE-2006-0631?
CRLF injection vulnerability in mailback.pl in Erik C. Thauvin mailback allows remote attackers to use mailback as a "spam proxy" by modifying mail headers, including recipient e-mail addresses, via newline characters in the Subject field.
How severe is CVE-2006-0631?
CVE-2006-0631 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2006-0631 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (73rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2006-0631?
CVE-2006-0631 affects Erik C. Thauvin Mailback. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2006-0631?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2006-0631 published?
CVE-2006-0631 was published on 2006-02-10 and last updated on 2026-06-16.

References

Affected products (1)