How severe is CVE-2008-5964?

CVE-2008-5964 has a CVSS 2.0 base score of 6.8, rated medium severity.

Is CVE-2008-5964 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (72nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2008-5964?

CVE-2008-5964 primarily affects Impresscms. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2008-5964?

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

When was CVE-2008-5964 published?

CVE-2008-5964 was published on 2009-01-23 and last updated on 2026-06-16.

CVE-2008-5964

CVE-2008-5964 is a medium-severity vulnerability in Impresscms with a CVSS 2.0 base score of 6.8. 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 6.8)
EPSS exploit prediction: 2% (72nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-287
Affected product: Impresscms
Published: 2009-01-23
Last modified: 2026-06-16

Description

Session fixation vulnerability in Social ImpressCMS before 1.1.1 RC1 allows remote attackers to hijack web sessions by setting the PHPSESSID parameter.

Frequently asked questions

What is CVE-2008-5964?: Session fixation vulnerability in Social ImpressCMS before 1.1.1 RC1 allows remote attackers to hijack web sessions by setting the PHPSESSID parameter.
How severe is CVE-2008-5964?: CVE-2008-5964 has a CVSS 2.0 base score of 6.8, rated medium severity.
Is CVE-2008-5964 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (72nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2008-5964?: CVE-2008-5964 primarily affects Impresscms. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2008-5964?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2008-5964 published?: CVE-2008-5964 was published on 2009-01-23 and last updated on 2026-06-16.

References

Affected products (5)

cpe:2.3:a:impresscms:impresscms:*:*:*:*:*:*:*:*
cpe:2.3:a:impresscms:impresscms:1.0:*:*:*:*:*:*:*
cpe:2.3:a:impresscms:impresscms:1.0.1:*:*:*:*:*:*:*
cpe:2.3:a:impresscms:impresscms:1.0.2:*:*:*:*:*:*:*
cpe:2.3:a:impresscms:impresscms:1.1:*:*:*:*:*:*:*

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Other CWE-287 (Improper Authentication) vulnerabilities

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CVE-2026-42822 — Critical (CVSS 10.0): Improper authentication in Azure Local Disconnected Operations allows an unauthorized attacker to elevate privileges…
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