What is CVE-2026-86604?

CVE-2026-86604 is a medium-severity vulnerability in Gtranslate, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 4.8/10. Published 2026-09-23.

How severe is CVE-2026-86604?

Medium severity. CVSS v3 base score is 4.8 out of 10.

Vulnerability in Gtranslate

CVE-2026-86604

The GTranslate WordPress plugin before 5.0.1 does not remove shortcodes from the content of outgoing emails before expanding them which, in a non-default configuration, allows unauthenticated users to have arbitrary shortcodes registered on the site executed server side.

Published 2026-09-23 · last modified 2026-09-23.

CVSS v3 metric

CVSS v3 base score 4.8 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.002 (15.6th percentile), scored 2026-11-04.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 16th percentile — 15.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: +0.001

Affected products

Gtranslate

Weakness classification (CWE)

CWE-74 — Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection)

References

wpscan.com/vulnerability/07c6e3a2-e8fe-4b25-a5d8-b5ed812100af/ (technical-description, exploit, vdb-entry)

Frequently asked questions

What is CVE-2026-86604?: CVE-2026-86604 is a medium-severity vulnerability in Gtranslate, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 4.8/10. Published 2026-09-23.
How severe is CVE-2026-86604?: Medium severity. CVSS v3 base score is 4.8 out of 10.