CVE-2008-4304

general/login.php in phpCollab 2.5 rc3 and earlier allows remote attackers to execute arbitrary commands via shell metacharacters in unspecified input related to the SSL_CLIENT_CERT environment variable. NOTE: in some environments, SSL_CLIENT_CERT always has a base64-encoded string value, which may impose constraints on injection for typical shells.

Published: 2008-12-23 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2008-4304 is rated High Risk (71.2/100): CVSS Critical severity, with medium exploitation likelihood (EPSS 3.01%). EPSS rose +1.21% over the last day, indicating growing attacker interest. High exploitation likelihood—assess exposure and prioritize remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2008-4304

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 1.79% 3.01% +1.21%
2 2025-05-14 2.01% 1.79% -0.22%
3 2025-03-30 — 2.01% —

Full EPSS history (10 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2008-4304

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
10.0 2.0 HIGH
AV:N/AC:L/Au:N/C:C/I:C/A:C Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:C)
Complete confidentiality impact.
Integrity impact (I:C)
Complete integrity impact.
Availability impact (A:C)
Complete availability impact.
 10.0 10.0 [email protected]

Weakness enumeration for CVE-2008-4304

OS Trackers for CVE-2008-4304

vendor priority summary link
gentoo high CVE-2008-4304: 1 GLSA(s) (200812-20), 1 atom(s) (www-apps/phpcollab); latest impact high. https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2008-4304

Affected software / configurations for CVE-2008-4304

Vendor Product Version Raw CPE
phpcollab phpcollab <= 2.5 cpe:2.3:a:phpcollab:phpcollab:*:rc3:*:*:*:*:*:*
phpcollab phpcollab 2.2 cpe:2.3:a:phpcollab:phpcollab:2.2:*:*:*:*:*:*:*
phpcollab phpcollab 2.3 cpe:2.3:a:phpcollab:phpcollab:2.3:*:*:*:*:*:*:*
phpcollab phpcollab 2.4 cpe:2.3:a:phpcollab:phpcollab:2.4:*:*:*:*:*:*:*
phpcollab phpcollab 2.5 cpe:2.3:a:phpcollab:phpcollab:2.5:beta_4:*:*:*:*:*:*
phpcollab phpcollab 2.5 cpe:2.3:a:phpcollab:phpcollab:2.5:rc1:*:*:*:*:*:*
phpcollab phpcollab 2.5 cpe:2.3:a:phpcollab:phpcollab:2.5:rc2:*:*:*:*:*:*

References for CVE-2008-4304

cvelogic Threat Intelligence