How severe is CVE-2009-0030?

CVE-2009-0030 has a CVSS 2.0 base score of 6.5, rated medium severity.

Is CVE-2009-0030 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (74th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2009-0030?

CVE-2009-0030 affects Squirrelmail. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2009-0030?

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

When was CVE-2009-0030 published?

CVE-2009-0030 was published on 2009-01-21 and last updated on 2026-06-16.

CVE-2009-0030

CVE-2009-0030 is a medium-severity vulnerability in Squirrelmail with a CVSS 2.0 base score of 6.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-287.

Key facts

Severity: Medium (CVSS 2.0 base score 6.5)
EPSS exploit prediction: 2% (74th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-287
Affected product: Squirrelmail
Published: 2009-01-21
Last modified: 2026-06-16

Description

A certain Red Hat patch for SquirrelMail 1.4.8 sets the same SQMSESSID cookie value for all sessions, which allows remote authenticated users to access other users' folder lists and configuration data in opportunistic circumstances by using the standard webmail.php interface. NOTE: this vulnerability exists because of an incorrect fix for CVE-2008-3663.

Frequently asked questions

What is CVE-2009-0030?: A certain Red Hat patch for SquirrelMail 1.4.8 sets the same SQMSESSID cookie value for all sessions, which allows remote authenticated users to access other users' folder lists and configuration data in opportunistic circumstances by using the standard webmail.php interface. NOTE: this vulnerability exists because of an incorrect fix for CVE-2008-3663.
How severe is CVE-2009-0030?: CVE-2009-0030 has a CVSS 2.0 base score of 6.5, rated medium severity.
Is CVE-2009-0030 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (74th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2009-0030?: CVE-2009-0030 affects Squirrelmail. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2009-0030?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2009-0030 published?: CVE-2009-0030 was published on 2009-01-21 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:squirrelmail:squirrelmail:1.4.8:*:*:*:*:*:*:*

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