HOMEVULNERABILITIESCVE-2016-6635
HIGH

CVE-2016-6635

CWE-352Published: August 7, 2016· Updated: Jun 17, 2026

8.8
CVSS v3.1

Official Description

Cross-site request forgery (CSRF) vulnerability in the wp_ajax_wp_compression_test function in wp-admin/includes/ajax-actions.php in WordPress before 4.5 allows remote attackers to hijack the authentication of administrators for requests that change the script compression option.

NVD Source

Technical Analysis

CVE-2016-6635 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation does not require any privileges, though user interaction (Required) is needed, which slightly reduces the risk of mass automated attacks.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 8.8.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionRequired
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected Vendors & Products

WordPress1 product(s)
wordpress
Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

PATCHhttps://github.com/WordPress/WordPress/commit/9b7a7754133c50b82bd9d976fb5b24094f658aab
PATCHhttps://github.com/WordPress/WordPress/commit/9b7a7754133c50b82bd9d976fb5b24094f658aab
ADVISORYhttps://wpvulndb.com/vulnerabilities/8475
ADVISORYhttps://wpvulndb.com/vulnerabilities/8475

All References (8)

→
http://codex.wordpress.org/Version_4.5Release Notes
→
http://www.debian.org/security/2016/dsa-3681
→
https://github.com/WordPress/WordPress/commit/9b7a7754133c50b82bd9d976fb5b24094f658aabPatch
→
https://wpvulndb.com/vulnerabilities/8475Third Party Advisory · VDB Entry
→
http://codex.wordpress.org/Version_4.5Release Notes
→
http://www.debian.org/security/2016/dsa-3681
→
https://github.com/WordPress/WordPress/commit/9b7a7754133c50b82bd9d976fb5b24094f658aabPatch
→
https://wpvulndb.com/vulnerabilities/8475Third Party Advisory · VDB Entry

Quick Facts

CVE IDCVE-2016-6635
CVSS Score8.8 / 10
SeverityHIGH
WeaknessCWE-352
CISA KEVNo
Affected1 vendor(s)
PublishedAug 7, 2016

Related CVEs (CWE-352)

CVE-2025-23922
10.0
CVE-2025-32642
10.0
CVE-2017-5145
10.0
CVE-2024-47359
9.8
CVE-2024-47634
9.8
CVE-2017-16780
9.8

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2016-6635 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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