CVE-2021-39200 json
Information Disclosure in wp_die() via JSONP in wordpress
published 2021-09-09 5 y ago modified 2026-09-08 2 mo ago also BIT-wordpress-2021-39200 , BIT-wordpress-multisite-2021-39200 , EUVD-2021-25582 , GHSA-m9hc-7v5q-x8q5
- cvss
- 5.3
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 2.0%
- EPSS 2.0% chance of exploitation in 30 days, percentile 80%
- public exploits
- 0
- none known
Summary
WordPress is a free and open-source content management system written in PHP and paired with a MySQL or MariaDB database. In affected versions output data of the function wp_die() can be leaked under certain conditions, which can include data like nonces. It can then be used to perform actions on your behalf. This has been patched in WordPress 5.8.1, along with any older affected versions via minor releases. It's strongly recommended that you keep auto-updates enabled to receive the fix.
Patch / fix
- bitnami wordpress 5.8.1
- bitnami wordpress-multisite 5.8.1
- wordpress wordpress 5.8.1
- wordpress Debian 14, Debian 13, Debian 12 5.8.1+dfsg1-1
debian advisories DEBIAN-CVE-2021-39200
- wordpress Arch Linux 5.8.1-1
arch linux advisories AVG-2373
Exploit prediction
1.97% chance of exploitation in the next 30 days, higher than 80% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 5.3 | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N |
| NVD | 2.0 | 4.3 | AV:N/AC:M/Au:N/C:P/I:N/A:N |
| OSV | 3.1 | 5.3 | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| bitnami | wordpress | >=5.2.0, <5.8.1 |
5.8.1 |
| bitnami | wordpress-multisite | >=5.2.0, <5.8.1 |
5.8.1 |
Affected products
- WordPress wordpress-develop
Classification
- Weakness
-
- CWE-200 Exposure of Sensitive Information to an Unauthorized Actor
- Technology feeds
References
-
debian.org
/security/2021/dsa-4985
vendor-advisory, third-party-advisory, advisory
-
github.com
/WordPress/wordpress-develop/security/advisories/GHSA-m9hc-7v5q-x8q5
third-party-advisory, advisory
-
hackerone.com
/reports/1142140
permissions-required, web
-
nvd.nist.gov
/vuln/detail/CVE-2021-39200
web
Sources
- CVE List CVE-2021-39200
- NVD CVE-2021-39200
- OSV BIT-wordpress-2021-39200
- OSV BIT-wordpress-multisite-2021-39200
- Maintainer advisory GHSA-m9hc-7v5q-x8q5
Fencer Vulns 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.
The maintainers of WordPress/wordpress-develop published their own advisory on GitHub. Reviewed sources take precedence over it.