CVE-2008-5840

critical

Description

PHP iCalendar 2.24 and earlier allows remote attackers to bypass authentication by setting the phpicalendar and phpicalendar_login cookies to 1.

References

https://www.exploit-db.com/exploits/6526

https://exchange.xforce.ibmcloud.com/vulnerabilities/45338

https://euvd.enisa.europa.eu/vulnerability/EUVD-2008-5810

http://www.securityfocus.com/bid/31320

http://securityreason.com/securityalert/4865

Details

Source: Mitre, NVD

Published: 2009-01-05

Updated: 2026-06-16

Risk Information

CVSS v2

Base Score: 7.5

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P

Severity: High

CVSS v3

Base Score: 9.8

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Severity: Critical

EPSS

EPSS: 0.02