VDB-88102 · CVE-2016-5835 · BID 91366

WordPress up to 4.5.2 Revision History information disclosure

CVSS Meta Temp Score
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CTI Interest Score
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A vulnerability classified as critical was found in WordPress up to 4.5.2 (Content Management System). This vulnerability affects an unknown function of the component Revision History Handler. The manipulation with an unknown input leads to a information disclosure vulnerability. The CWE definition for the vulnerability is CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. As an impact it is known to affect confidentiality. CVE summarizes:

WordPress before 4.5.3 allows remote attackers to obtain sensitive revision-history information by leveraging the ability to read a post, related to wp-admin/includes/ajax-actions.php and wp-admin/revision.php.

The weakness was disclosed 06/18/2016 with WordPress Security Team as WordPress 4.5.3 Maintenance and Security Release as confirmed news (Website). The advisory is available at wordpress.org. The public release has been coordinated in cooperation with the vendor. This vulnerability was named CVE-2016-5835 since 06/23/2016. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. The technical details are unknown and an exploit is not available. This vulnerability is assigned to T1592 by the MITRE ATT&CK project. The advisory points out:

WordPress versions 4.5.2 and earlier are affected by several security issues (...)

The vulnerability scanner Nessus provides a plugin with the ID 91840 (FreeBSD : wordpress -- multiple vulnerabilities (bfcc23b6-3b27-11e6-8e82-002590263bf5)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family FreeBSD Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 175805 (Debian Security Update for wordpress (DSA 3639-1)).

Upgrading to version 3.7.15, 3.8.15, 3.9.13, 4.0.12, 4.1.12, 4.2.9, 4.3.5, 4.4.4 or 4.5.3 eliminates this vulnerability. The upgrade is hosted for download at github.com. A possible mitigation has been published immediately after the disclosure of the vulnerability. The news contains the following remark:

In addition to the security issues above, WordPress 4.5.3 fixes 17 bugs from 4.5, 4.5.1 and 4.5.2.

The vulnerability is also documented in the databases at Tenable (91840), SecurityFocus (BID 91366†) and SecurityTracker (ID 1036163†).






CPE 2.3info

CPE 2.2info


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VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 7.3

VulDB Base Score: 7.5
VulDB Temp Score: 7.2
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NVD Base Score: 7.5
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Class: Information disclosure
CWE: CWE-200 / CWE-284 / CWE-266

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

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Nessus ID: 91840
Nessus Name: FreeBSD : wordpress -- multiple vulnerabilities (bfcc23b6-3b27-11e6-8e82-002590263bf5)
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OpenVAS ID: 100087
OpenVAS Name: Fedora Update for wordpress FEDORA-2016-7db496f6f2
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Recommended: Upgrade
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Upgrade: WordPress 3.7.15/3.8.15/3.9.13/4.0.12/4.1.12/4.2.9/4.3.5/4.4.4/4.5.3
Patch: github.com


06/18/2016 🔍
06/18/2016 +0 days 🔍
06/18/2016 +0 days 🔍
06/23/2016 +5 days 🔍
06/23/2016 +0 days 🔍
06/24/2016 +1 days 🔍
06/27/2016 +3 days 🔍
06/29/2016 +2 days 🔍
08/24/2022 +2247 days 🔍


Product: wordpress.com

Advisory: WordPress 4.5.3 Maintenance and Security Release
Organization: WordPress Security Team
Status: Confirmed
Confirmation: 🔍
Coordinated: 🔍

CVE: CVE-2016-5835 (🔍)

SecurityFocus: 91366 - WordPress Prior to 4.5.3 Unspecified Information Disclosure Vulnerability
SecurityTracker: 1036163


Created: 06/24/2016 10:52 AM
Updated: 08/24/2022 02:43 PM
Changes: 06/24/2016 10:52 AM (76), 05/08/2019 01:11 PM (14), 08/24/2022 02:43 PM (3)
Complete: 🔍
Cache ID: 44:304:40


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