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Simple JWT Login vulnerabilities
Simple JWT Login has 5 known vulnerabilities in this database. The most recent published record is dated 6 Oct 2026.
- Known vulnerabilities
- 5
- Active installs
- 4,000+
- Latest version
- 3.6.8
- Last updated
- 9 Aug 2026
- Most recent
- 6 Oct 2026
Find it in your WordPress dashboard under Plugins. Severity is based on the CVSS score published with the CVE where one is available.
| Vulnerability | Severity | Affected | Fix | Published |
|---|---|---|---|---|
| Authentication bypass CVE-2026-39793 | High 8.8 | Not yet published | Check for an update | 1 d ago |
| Authentication bypass CVE-2026-19714 | Critical 9.1 | Before 3.6.8 | Fixed in 3.6.8 | 16 Aug 2026 |
| Privilege escalation CVE-2026-14262 | High 8.8 | Up to 3.6.6 | Fixed in a later version (latest 3.6.8) | 11 Jul 2026 |
| Security weakness CVE-2021-24998 | High 7.5 | Before 3.3.0 | Fixed in 3.3.0 | 27 Dec 2021 |
| Cross-site request forgery (CSRF) CVE-2021-24804 | High 8.8 | Before 3.2.1 | Fixed in 3.2.1 | 17 Nov 2021 |
Read the published descriptions
- CVE-2026-39793, 6 Oct 2026
- Subscriber Broken Authentication in Simple JWT Login 4.0.0 versions. CVE record
- CVE-2026-19714, 16 Aug 2026
- The Simple JWT Login WordPress plugin before 3.6.8 does not validate the audience of the Google identity tokens it accepts, allowing unauthenticated users to authenticate as any user whose email address such a token carries, up to and including an administrator. Every site with the Simple JWT Login WordPress plugin before 3.6.8's Google sign-in enabled is affected. CVE record
- CVE-2026-14262, 11 Jul 2026
- The Simple JWT Login - Allows you to use JWT on REST endpoints. plugin for WordPress is vulnerable to Authentication Bypass to Privilege Escalation in all versions up to, and including, 3.6.6 via the `payload` parameter. The vulnerability exists because `AuthenticateService::generatePayload()` only overwrites JWT payload keys whose names appear in the admin-configured `jwt_payload` list - leaving any attacker-supplied identity claims such as `email`, `id`, or `username` intact and signed into the JWT with the site's HS256 secret. This makes it possible for authenticated attackers, with subscriber-level access and above, to escalate their privileges to that of an Administrator by injecting a target administrator's email address into the `payload` parameter at the `/wp-json/simple-jwt-login/v1/auth` endpoint, then redeeming the resulting JWT at the `/autologin` endpoint to obtain a fully authenticated session as that administrator. CVE record
- CVE-2021-24998, 27 Dec 2021
- The Simple JWT Login WordPress plugin before 3.3.0 can be used to create new WordPress user accounts with a randomly generated password. The password is generated using the str_shuffle PHP function that "does not generate cryptographically secure values, and should not be used for cryptographic purposes" according to PHP's documentation. CVE record
- CVE-2021-24804, 17 Nov 2021
- The Simple JWT Login WordPress plugin before 3.2.1 does not have nonce checks when saving its settings, allowing attackers to make a logged in admin changed them. Settings such as HMAC verification secret, account registering and default user roles can be updated, which could result in site takeover. CVE record
What to do if you run Simple JWT Login
If you run Simple JWT Login, open WordPress and check the installed version in Plugins. Compare it with the affected versions in the vulnerability record. If a fixed version is available, take a current backup and update to that version or the latest supported release.
If no fixed version exists, consider disabling and removing the plugin or replacing it with a maintained alternative. After dealing with the affected software, check administrator users, unexpected file changes, redirects, unfamiliar pages and security logs for signs that the site may already have been altered.
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