How severe is CVE-2006-3665?

CVE-2006-3665 has a CVSS 2.0 base score of 4.3, rated medium severity.

Is CVE-2006-3665 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (64th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2006-3665?

CVE-2006-3665 affects Squirrelmail. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2006-3665?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2006-3665 published?

CVE-2006-3665 was published on 2006-07-18 and last updated on 2026-06-16.

CVE-2006-3665

CVE-2006-3665 is a medium-severity vulnerability in Squirrelmail with a CVSS 2.0 base score of 4.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Medium (CVSS 2.0 base score 4.3)
EPSS exploit prediction: 1% (64th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Squirrelmail
Published: 2006-07-18
Last modified: 2026-06-16

Description

SquirrelMail 1.4.6 and earlier, with register_globals enabled, allows remote attackers to hijack cookies in src/redirect.php via unknown vectors. NOTE: while "cookie theft" is frequently associated with XSS, the vendor disclosure is too vague to be certain of this.

Frequently asked questions

What is CVE-2006-3665?: SquirrelMail 1.4.6 and earlier, with register_globals enabled, allows remote attackers to hijack cookies in src/redirect.php via unknown vectors. NOTE: while "cookie theft" is frequently associated with XSS, the vendor disclosure is too vague to be certain of this.
How severe is CVE-2006-3665?: CVE-2006-3665 has a CVSS 2.0 base score of 4.3, rated medium severity.
Is CVE-2006-3665 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (64th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2006-3665?: CVE-2006-3665 affects Squirrelmail. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2006-3665?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2006-3665 published?: CVE-2006-3665 was published on 2006-07-18 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:squirrelmail:squirrelmail:1.4.6:*:*:*:*:*:*:*

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