CVE-2021-25036 json
All In One SEO < 4.1.5.3 - Authenticated Privilege Escalation
published 4y ago modified 4mo ago also EUVD-2021-11948
- cvss
- 8.8
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 3.0%
- EPSS 3.0% chance of exploitation in 30 days, percentile 87%
- public exploits
- 0
- none known
Summary
The All in One SEO WordPress plugin before 4.1.5.3 is affected by a Privilege Escalation issue, which was discovered during an internal audit by the Jetpack Scan team, and may grant bad actors access to protected REST API endpoints they shouldn’t have access to. This could ultimately enable users with low-privileged accounts, like subscribers, to perform remote code execution on affected sites.
Patch / fix
- aioseo all_in_one_seo 4.1.5.3
Is CVE-2021-25036 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.
Check with FencerExploit prediction
3.03% chance of exploitation in the next 30 days, higher than 87% of all scored CVEs (FIRST EPSS, 2026-11-09).
Exploits and checks
- wpscan.com https://wpscan.com/vulnerability/6de4a7de-6b71-4349-8e52-04c89c5e6d6c referenced PoC, tagged "exploit" by a source, unverified
- jetpack.com https://jetpack.com/2021/12/14/severe-vulnerabilities-fixed-in-all-in-one-seo-plugin-version-4-1-5-3/ referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 8.8 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 6.5 | AV:N/AC:L/Au:S/C:P/I:P/A:P |
Affected products
- Unknown All in One SEO – Best WordPress SEO Plugin – Easily Improve SEO Rankings & Increase Traffic
Classification
- Weakness
- Technology feeds
References
-
plugins.trac.wordpress.org
/changeset/2640944/all-in-one-seo-pack/trunk/app/Common/Api/Api.php
patch, vendor-advisory
-
wpscan.com
/vulnerability/6de4a7de-6b71-4349-8e52-04c89c5e6d6c
exploit, third-party-advisory
-
jetpack.com
/2021/12/14/severe-vulnerabilities-fixed-in-all-in-one-seo-plugin-version-4-1-5-3/
exploit, third-party-advisory
Sources
- CVE List CVE-2021-25036
- NVD CVE-2021-25036
Fencer Intel 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.