CVE-2008-5840
PHP iCalendar 2.24 and earlier allows remote attackers to bypass authentication by setting the...
CVE-2008-5840 is a high vulnerability (CVSS 7.5) in Phpicalendar, published January 5, 2009. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 3.02%, the 87th percentile. No source names a fixed version.
PHP iCalendar 2.24 and earlier allows remote attackers to bypass authentication by setting the phpicalendar and phpicalendar_login cookies to 1.
Exploit likelihood
What each source reports
NVD Score used
PHP iCalendar 2.24 and earlier allows remote attackers to bypass authentication by setting the phpicalendar and phpicalendar_login cookies to 1.
- Record
CVE-2008-5840- CVSS 2.0
- 7.5 High
AV:N/AC:L/Au:N/C:P/I:P/A:P - Weakness
- CWE-264
- Updated
- 2026-11-02
CVE List No score
PHP iCalendar 2.24 and earlier allows remote attackers to bypass authentication by setting the phpicalendar and phpicalendar_login cookies to 1.
- Record
CVE-2008-5840- Updated
- 2026-11-02
EUVDEUVD-2008-5810 No score
PHP iCalendar 2.24 and earlier allows remote attackers to bypass authentication by setting the phpicalendar and phpicalendar_login cookies to 1.
- Record
EUVD-2008-5810- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-mwmq-3358-vg7q No score
PHP iCalendar 2.24 and earlier allows remote attackers to bypass authentication by setting the...
PHP iCalendar 2.24 and earlier allows remote attackers to bypass authentication by setting the phpicalendar and phpicalendar_login cookies to 1.
- Record
GHSA-mwmq-3358-vg7q- Updated
- 2026-11-02
Affected products
Public exploits
Links only. Every CVE stores no exploit code.
| Source | Link | Date |
|---|---|---|
| Exploit-DB | PHP iCalendar 2.24 - Insecure Cookie Handling | 2008-09-22 |
History
| When | Changed | Sources |
|---|---|---|
| 2026-11-03 | aliases | EUVD |
| 2026-11-02 | created | CVE List, Exploit-DB, GitHub Advisories, NVD |