Plugins · polylang · data as of 2026-11-01
Is Polylang safe? Known vulnerabilities and latest version
- Latest version
- 3.9.1
- Last updated
- 2026-10-21
- Active installs
- 900,000+
- Known issues on record
- 6
- Unpatched in latest
- 0
- Tested up to WP
- 7.1.4 · PHP 7.4+
Go multilingual in a simple and efficient way. Keep writing posts and taxonomy terms as usual while defining their languages all at once. — by Chouby
What to do
- Update to the latest version (3.9.1). Anything older than 3.8.10 has at least one known issue listed below. Dashboard → Updates, or Plugins → “update now”.
- If you cannot update right away, deactivate it until you can.
- Turn on auto-updates for it: Plugins → “Enable auto-updates” on its row.
- If you ran a vulnerable version and something looks off (spam pages, strange admins, redirects), run the free scan.
With WP-CLI: wp plugin get polylang --field=version shows what you run; wp plugin update polylang updates it.
Check your version
Known vulnerabilities
6 on record, newest first. “Affected” is the version range the source gives; “fixed in” is the version the source names, or (marked *) the first wordpress.org release after the last affected version.
high 7.2 CVE-2026-97278 · published 2026-10-14
PHP object injection in Polylang (3.8.9 and older)
- Affected
- 3.8.9 and older
- Fixed in
- 3.8.10
- Access needed (per CVSS)
- Needs an admin-level account
- Range from
- CVE record (the advisory publisher) · score by Patchstack
Details from the advisory
Deserialization of Untrusted Data vulnerability in WP SYNTEX Polylang polylang allows Object Injection.This issue affects Polylang: from n/a through 3.8.9.
medium 4.3 CVE-2026-39783 · published 2026-10-05
Missing authorization check in Polylang (3.8.7 and older)
- Affected
- 3.8.7 and older
- Fixed in
- 3.8.8
- Access needed (per CVSS)
- Needs a low-level account (e.g. subscriber)
- Range from
- CVE record (the advisory publisher) · score by Patchstack
Details from the advisory
Missing Authorization vulnerability in WP SYNTEX Polylang polylang allows Retrieve Embedded Sensitive Data.This issue affects Polylang: from n/a through 3.8.7.
medium 6.5 CVE-2026-97279 · published 2026-09-30
Cross-site scripting (XSS) in Polylang (3.8.9 and older)
- Affected
- 3.8.9 and older
- Fixed in
- 3.8.10
- Access needed (per CVSS)
- Needs a low-level account (e.g. subscriber); someone on the site has to click a link or open a page
- Range from
- CVE record (the advisory publisher) · score by Patchstack
Details from the advisory
Contributor Cross Site Scripting (XSS) in Polylang <= 3.8.9 versions.
medium 4.3 CVE-2026-65458 · published 2026-07-23
Information disclosure in Polylang (3.8.5 and older)
- Affected
- 3.8.5 and older
- Fixed in
- 3.8.6
- Access needed (per CVSS)
- Needs a low-level account (e.g. subscriber)
- Range from
- CVE record (the advisory publisher) · score by Patchstack
Details from the advisory
Exposure of Sensitive System Information to an Unauthorized Control Sphere vulnerability in Chouby Polylang and Chouby Polylang Pro allows Retrieve Embedded Sensitive Data. This issue affects Polylang: through 3.8.5; Polylang Pro: through 3.8.5.
high 8.8 CVE-2025-64353 · published 2025-10-31
PHP object injection in Polylang (3.7.3 and older)
- Affected
- 3.7.3 and older
- Fixed in
- 3.7.4
- Access needed (per CVSS)
- Needs a low-level account (e.g. subscriber)
- Range from
- CVE record (the advisory publisher) · score by Patchstack
Details from the advisory
Deserialization of Untrusted Data vulnerability in Chouby Polylang polylang allows Object Injection.This issue affects Polylang: from n/a through <= 3.7.3.
medium 4.3 CVE-2014-4855 · published 2014-07-10
Cross-site scripting (XSS) in Polylang (1.5.1 and older, 1.5 only)
- Affected
- 1.5.1 and older, 1.5 only
- Fixed in
- 1.5.2 *
- Range from
- NVD analysis · score by NVD
Details from the advisory
Cross-site scripting (XSS) vulnerability in the Polylang plugin before 1.5.2 for WordPress allows remote attackers to inject arbitrary web script or HTML via vectors related to a user description. NOTE: some of these details are obtained from third party information.
Recent activity
- 2026-10-21 — latest release on wordpress.org (3.9.1).
- 2026-10-14 — PHP object injection disclosed (CVE-2026-97278), fixed in 3.8.10.
- 2026-10-05 — Missing authorization check disclosed (CVE-2026-39783), fixed in 3.8.8.
- 2026-09-30 — Cross-site scripting (XSS) disclosed (CVE-2026-97279), fixed in 3.8.10.
Get an email when Polylang has a new vulnerability
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Where this data comes from
- Version, last update, installs: wordpress.org/plugins/polylang (Plugins API), fetched 2026-11-01.
- Vulnerabilities: NIST National Vulnerability Database (NVD), checked 2026-11-01. This product uses data from the NVD API but is not endorsed or certified by the NVD.
- Each record links to its CVE page and to the original advisory (Wordfence, Patchstack or WPScan) where there is one. We only list a CVE here when its references or its advisory name this exact plugin, so a few real issues may be missing; none should be about a different plugin. Spot an error? Email Daniel.
Badge for your site or docs (states facts with a date, not a verdict):
<a href="https://laskyr.com/plugins/polylang"><img src="https://laskyr.com/plugins/polylang/badge.svg" alt="Polylang vulnerability status"></a>