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CVE Database›CVE-2016-6290

CVE-2016-6290

php: Use after free in unserialize() with Unexpected Session Deserialization

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Severity

Moderate

Red Hat Product Security

7

CVSS 3.0

Review impact separately from score.

Published · July 8, 2016

Updated · June 28, 2026

Description

ext/session/session.c in PHP before 5.5.38, 5.6.x before 5.6.24, and 7.x before 7.0.9 does not properly maintain a certain hash data structure, which allows remote attackers to cause a denial of service (use-after-free) or possibly have unspecified other impact via vectors related to session deserialization.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CVSS 3.0 · 7
CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS 2.0 · 4.4
AV:L/AC:M/Au:N/C:P/I:P/A:P

CWE-416 · Use After Free