CVE-2007-1522
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.
Key facts
- CVSS score
- 6.8 (v2.0)
- Severity
- MEDIUM
- CVSS vector
AV:N/AC:M/Au:N/C:P/I:P/A:P- EPSS score
- 6.7% (94th percentile)
- In CISA KEV
- No
- In EU EUVD
- Yes (EUVD-2007-1516)
- Published
- March 20, 2007
- NVD last modified
- June 16, 2026
- Status
- Modified
EU Vulnerability Database (EUVD)
This vulnerability is also tracked by ENISA as EUVD-2007-1516 in the EU Vulnerability Database. Last updated in EUVD on August 7, 2024.
View on the EU Vulnerability DatabaseAffected products
- php / php
- php / php
References
Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS
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