WordPress before 4.5.3 allows remote attackers to bypass the sanitize_file_name protection mechanism via unspecified vectors.

published 2016-06-29 10 y ago modified 2026-06-17 4 mo ago also EUVD-2016-6774

cvss: 7.5; version 3.0, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 2.6%; EPSS 2.6% chance of exploitation in 30 days, percentile 85%
public exploits: 0; none known

Patch / fix

distros 1

wordpress Debian 14, Debian 13, Debian 12 4.5.3+dfsg-1

debian advisories DEBIAN-CVE-2016-5839

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2016-5839 updated 2025-11-21

wordpress: 4.5.3 Security Release

Red Hat All currently supported Red Hat products
not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

2.57% chance of exploitation in the next 30 days, higher than 85% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by	version	score	vector
NVD	3.0	7.5	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
NVD	2.0	5.0	AV:N/AC:L/Au:N/C:N/I:P/A:N

Classification

Technology feeds

WordPress rss critical rss

References

debian.org /security/2016/dsa-3639
vendor-advisory
wordpress.org /news/2016/06/wordpress-4-5-3/
vendor-advisory
codex.wordpress.org /Version_4.5.3
securitytracker.com /id/1036163
vdb-entry, third-party-advisory
securityfocus.com /bid/91364
vdb-entry

Sources

CVE List CVE-2016-5839
NVD CVE-2016-5839

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary