Twenty Fifteen · Security record
Is Twenty Fifteen safe?
No known vulnerability affects the current version (4.3). 2 issues were found in earlier versions and fixed, the latest disclosed on May 6, 2015.
Checked 2 days ago against the WPVulnerability database, for version 4.3.
How it’s looked after
- Last release
- Aug 19, 2026 (2 months ago)
- Releases in the last year
- 3
- Active installs
- 60K+
2 known vulnerabilities
- 2 not rated
None affects the current version.
Every known vulnerability in Twenty Fifteen
Newest first, with any that affect the current version at the top.
Affects 1.1 and earlier · May 6, 2015 · Patchstack
Fixed in 1.2 · CVE-2015-3429 · Apr 8, 2015 · Wordfence
Questions about Twenty Fifteen’s security
Is Twenty Fifteen safe to use?
No known vulnerability affects its current version. Earlier versions had issues that are now fixed, so keep Twenty Fifteen updated: most attacks target sites that haven’t updated.
Does Twenty Fifteen have known security vulnerabilities?
None that affect the current version. WPVulnerability’s database lists 2 older issues, fixed in earlier versions, so keep Twenty Fifteen up to date.
Is Twenty Fifteen still maintained?
Yes. Its last release was 2 months ago.
Hear about the next one first
Track your theme on TrackWP and get an alert when a new vulnerability affecting it is published. Every plan has it, the free Starter too; Boost and FullCharge email it at once.
Start freeVulnerability data from WPVulnerability (CC0), which gathers records from CVE, Wordfence, Patchstack and WPScan. A clean record isn’t a guarantee: keep every theme updated.