---
id: CVE-2015-5721
title: >-
  Malware Information Sharing Platform (MISP) before 2.3.90 allows remote
  attackers to conduct PHP object injection attacks via crafted serialized data,
  related to TemplatesController.php and
  populate_event_from_template_attributes.ctp.
summary: >-
  Malware Information Sharing Platform (MISP) before 2.3.90 allows remote
  attackers to conduct PHP object injection attacks via crafted serialized data,
  related to TemplatesController.php and
  populate_event_from_template_attributes.ctp.
severity: critical
cvss: 9.8
cvssVector: 'CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-94
vendor: misp-project
product: misp
affected:
  - misp <= 2.3.89
published: '2016-09-03'
updated: '2026-06-23'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2015-5721'
references:
  - url: 'http://www.securityfocus.com/bid/92739'
    label: cve@mitre.org
  - url: >-
      https://github.com/MISP/MISP/commit/415d85102d5aa5f96f4f11a17c86b59bb9cc0d56
    label: cve@mitre.org
  - url: 'https://www.circl.lu/advisory/CVE-2015-5721/'
    label: cve@mitre.org
  - url: 'http://www.securityfocus.com/bid/92739'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: >-
      https://github.com/MISP/MISP/commit/415d85102d5aa5f96f4f11a17c86b59bb9cc0d56
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://www.circl.lu/advisory/CVE-2015-5721/'
    label: af854a3a-2127-422b-91ae-364da2661108
tags:
  - nvd
epss: 0.02632
epssPercentile: 0.84872
ingestedAt: '2026-06-29T13:24:33.200Z'
---

## Overview

Malware Information Sharing Platform (MISP) before 2.3.90 allows remote attackers to conduct PHP object injection attacks via crafted serialized data, related to TemplatesController.php and populate_event_from_template_attributes.ctp.

## Affected

- `misp <= 2.3.89`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.