HIGH SEVERITY

CVE-2008-2836

Webcalendar vulnerability

CVSS
7.5
EPSS
3.1%
EPSS pct
86th
Exploited
No known
PHP remote file inclusion vulnerability in send_reminders.php in WebCalendar 1.0.4 allows remote attackers to execute arbitrary PHP code via a URL in the includedir parameter and a 0 value for the noSet parameter, a different vector than CVE-2007-1483.
Affected vendor
K5n
Affected product
Webcalendar
CVSS vector
AV:N/AC:L/Au:N/C:P/I:P/A:P
Weakness type (CWE)
Published
2008-06-24

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring no authentication. Successful exploitation leads to partial impact to confidentiality, partial impact to integrity, partial impact to availability.

Its EPSS score of 3.1% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 86% of all scored CVEs.

Check your external exposure to CVE-2008-2836

  • Confirm whether K5n Webcalendar is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2008-2836.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2008-2836

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2008-2836 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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