CVE-2021-31779 json
Server-Side Request Forgery in yoast_seo
published 2021-04-28 5 y ago modified 2026-06-17 4 mo ago also GHSA-m2q4-qghh-p9cq , EUVD-2021-1130
- cvss
- 6.4
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.5%
- EPSS 0.5% chance of exploitation in 30 days, percentile 41%
- public exploits
- 0
- none known
Summary
The yoast_seo (aka Yoast SEO) extension before 7.2.1 for TYPO3 allows SSRF via a backend user account.
Patch / fix
- packagist yoast-seo-for-typo3/yoast_seo 7.2.1
- yoast yoast_seo 7.2.1
Exploit prediction
0.47% chance of exploitation in the next 30 days, higher than 41% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 6.4 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N |
| NVD | 2.0 | 5.5 | AV:N/AC:L/Au:S/C:P/I:P/A:N |
| GitHub | 3.1 | 6.4 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| packagist | yoast-seo-for-typo3/yoast_seo | <7.2.1 |
7.2.1 |
Classification
- Weakness
-
- CWE-918 Server-Side Request Forgery
References
-
typo3.org
/security/advisory/typo3-ext-sa-2021-006
web, patch, third-party-advisory
-
nvd.nist.gov
/vuln/detail/CVE-2021-31779
advisory
Sources
- CVE List CVE-2021-31779
- GitHub Advisory GHSA-m2q4-qghh-p9cq
- NVD CVE-2021-31779
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.