CVE-2007-1522
Double free vulnerability in the session extension in PHP 5.2.0 and 5.2.1 allows context...
Double free vulnerability in the session extension in PHP 5.2.0 and 5.2.1 allows context-dependent attackers to execute arbitrary code via illegal characters in a session identifier, which is rejected by an internal session storage module, which calls the session identifier generator with an improper environment, leading to code execution when the generator is interrupted, as demonstrated by triggering a memory limit violation or certain PHP errors.
Exploit likelihood
What each source reports
NVD Score used
Double free vulnerability in the session extension in PHP 5.2.0 and 5.2.1 allows context-dependent attackers to execute arbitrary code via illegal characters in a session identifier, which is rejected by an internal session storage module, which calls the session identifier generator with an improper environment, leading to code execution when the generator is interrupted, as demonstrated by triggering a memory limit violation or certain PHP errors.
- Record
CVE-2007-1522- CVSS 2.0
- 6.8 Medium
AV:N/AC:M/Au:N/C:P/I:P/A:P - Updated
- 2026-11-02
CVE List No score
Double free vulnerability in the session extension in PHP 5.2.0 and 5.2.1 allows context-dependent attackers to execute arbitrary code via illegal characters in a session identifier, which is rejected by an internal session storage module, which calls the session identifier generator with an improper environment, leading to code execution when the generator is interrupted, as demonstrated by triggering a memory limit violation or certain PHP errors.
- Record
CVE-2007-1522- Updated
- 2026-11-02
EUVDEUVD-2007-1516 No score
Double free vulnerability in the session extension in PHP 5.2.0 and 5.2.1 allows context-dependent attackers to execute arbitrary code via illegal characters in a session identifier, which is rejected by an internal session storage module, which calls the session identifier generator with an improper environment, leading to code execution when the generator is interrupted, as demonstrated by triggering a memory limit violation or certain PHP errors.
- Record
EUVD-2007-1516- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-f434-223j-r8rm No score
Double free vulnerability in the session extension in PHP 5.2.0 and 5.2.1 allows context...
Double free vulnerability in the session extension in PHP 5.2.0 and 5.2.1 allows context-dependent attackers to execute arbitrary code via illegal characters in a session identifier, which is rejected by an internal session storage module, which calls the session identifier generator with an improper environment, leading to code execution when the generator is interrupted, as demonstrated by triggering a memory limit violation or certain PHP errors.
- Record
GHSA-f434-223j-r8rm- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
php5Debian:4.0 From an advisory covering 17 CVEs |
before 5.2.0-8+etch3, plus listed versions 5.2.0-8+etch1 |
5.2.0-8+etch3 |
Public exploits
Links only. Every CVE stores no exploit code.
| Source | Link | Date |
|---|---|---|
| Exploit-DB | PHP 5.2.0/5.2.1 - Rejected Session ID Double-Free | 2007-03-14 |
History
| Recorded | Changed | Sources |
|---|---|---|
| affected, facts | ||
| aliases | EUVD | |
| aliases | ||
| first indexed | CVE List, Exploit-DB, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2007-1522 is a medium vulnerability (CVSS 6.8) in Php, published March 20, 2007. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 6.71%, the 93rd percentile. No source names a fixed version.