How severe is CVE-2006-0188?

CVE-2006-0188 has a CVSS 2.0 base score of 4.3, rated medium severity.

Is CVE-2006-0188 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (78th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2006-0188?

CVE-2006-0188 primarily affects Squirrelmail. In total, 12 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2006-0188?

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

When was CVE-2006-0188 published?

CVE-2006-0188 was published on 2006-02-24 and last updated on 2026-06-16.

CVE-2006-0188

CVE-2006-0188 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: 2% (78th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Squirrelmail
Published: 2006-02-24
Last modified: 2026-06-16

Description

webmail.php in SquirrelMail 1.4.0 to 1.4.5 allows remote attackers to inject arbitrary web pages into the right frame via a URL in the right_frame parameter. NOTE: this has been called a cross-site scripting (XSS) issue, but it is different than what is normally identified as XSS.

Frequently asked questions

What is CVE-2006-0188?: webmail.php in SquirrelMail 1.4.0 to 1.4.5 allows remote attackers to inject arbitrary web pages into the right frame via a URL in the right_frame parameter. NOTE: this has been called a cross-site scripting (XSS) issue, but it is different than what is normally identified as XSS.
How severe is CVE-2006-0188?: CVE-2006-0188 has a CVSS 2.0 base score of 4.3, rated medium severity.
Is CVE-2006-0188 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (78th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2006-0188?: CVE-2006-0188 primarily affects Squirrelmail. In total, 12 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2006-0188?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2006-0188 published?: CVE-2006-0188 was published on 2006-02-24 and last updated on 2026-06-16.

References

Affected products (12)

cpe:2.3:a:squirrelmail:squirrelmail:1.4:*:*:*:*:*:*:*
cpe:2.3:a:squirrelmail:squirrelmail:1.4.1:*:*:*:*:*:*:*
cpe:2.3:a:squirrelmail:squirrelmail:1.4.2:*:*:*:*:*:*:*
cpe:2.3:a:squirrelmail:squirrelmail:1.4.3:*:*:*:*:*:*:*
cpe:2.3:a:squirrelmail:squirrelmail:1.4.3_r3:*:*:*:*:*:*:*
cpe:2.3:a:squirrelmail:squirrelmail:1.4.3_rc1:*:*:*:*:*:*:*
cpe:2.3:a:squirrelmail:squirrelmail:1.4.3a:*:*:*:*:*:*:*
cpe:2.3:a:squirrelmail:squirrelmail:1.4.4:*:*:*:*:*:*:*
cpe:2.3:a:squirrelmail:squirrelmail:1.4.4_rc1:*:*:*:*:*:*:*
cpe:2.3:a:squirrelmail:squirrelmail:1.4.5:*:*:*:*:*:*:*
cpe:2.3:a:squirrelmail:squirrelmail:1.4.6_rc1:*:*:*:*:*:*:*
cpe:2.3:a:squirrelmail:squirrelmail:1.4_rc1:*:*:*:*:*:*:*

More vulnerabilities in Squirrelmail

CVE-2004-0521 — Critical (CVSS 10.0): SQL injection vulnerability in SquirrelMail before 1.4.3 RC1 allows remote attackers to execute unauthorized SQL…
CVE-2002-0516 — Critical (CVSS 10.0): SquirrelMail 1.2.5 and earlier allows authenticated SquirrelMail users to execute arbitrary commands by modifying the…
CVE-2020-14932 — Critical (CVSS 9.8): compose.php in SquirrelMail 1.4.22 calls unserialize for the $mailtodata value, which originates from an HTTP GET…
CVE-2020-14933 — High (CVSS 8.8): compose.php in SquirrelMail 1.4.22 calls unserialize for the $attachments value, which originates from an HTTP POST…
CVE-2018-8741 — High (CVSS 8.8): A directory traversal flaw in SquirrelMail 1.4.22 allows an authenticated attacker to exfiltrate (or potentially…
CVE-2017-7692 — High (CVSS 8.8): SquirrelMail 1.4.22 (and other versions before 20170427_0200-SVN) allows post-authentication remote code execution via…

All CVEs affecting Squirrelmail →