CVE-2021-31779
CVE-2021-31779 is a medium-severity vulnerability in Yoast Yoast Seo with a CVSS 3.x base score of 6.4. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-918.
Key facts
- Severity: Medium (CVSS 3.x base score 6.4)
- CVSS v2: 5.5
- EPSS exploit prediction: 0% (38th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-918
- Affected product: Yoast Yoast Seo
- Published:
- Last modified:
Description
The yoast_seo (aka Yoast SEO) extension before 7.2.1 for TYPO3 allows SSRF via a backend user account.
Frequently asked questions
- What is CVE-2021-31779?
- The yoast_seo (aka Yoast SEO) extension before 7.2.1 for TYPO3 allows SSRF via a backend user account.
- How severe is CVE-2021-31779?
- CVE-2021-31779 has a CVSS 3.x base score of 6.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.
- Is CVE-2021-31779 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (38th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2021-31779?
- CVE-2021-31779 affects Yoast Yoast Seo. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2021-31779?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- When was CVE-2021-31779 published?
- CVE-2021-31779 was published on 2021-04-28 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:yoast:yoast_seo:*:*:*:*:*:typo3:*:*
More vulnerabilities in Yoast Yoast Seo
- CVE-2019-13478 — Critical (CVSS 9.8): The Yoast SEO plugin before 11.6-RC5 for WordPress does not properly restrict unfiltered HTML in term descriptions.
- CVE-2023-32300 — High (CVSS 7.1): Unauth. Reflected Cross-Site Scripting (XSS) vulnerability in Yoast Yoast SEO: Local plugin <= 14.8 versions.
- CVE-2018-19370 — Medium (CVSS 6.6): A Race condition vulnerability in unzip_file in admin/import/class-import-settings.php in the Yoast SEO (wordpress-seo)…
- CVE-2023-28785 — Medium (CVSS 6.5): Auth. (contributor+) Stored Cross-Site Scripting (XSS) vulnerability in Yoast Yoast SEO: Local plugin <= 14.9 versions.
- CVE-2023-40680 — Medium (CVSS 5.9): Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Team Yoast Yoast…
- CVE-2021-36788 — Medium (CVSS 5.4): The yoast_seo (aka Yoast SEO) extension before 7.2.3 for TYPO3 allows XSS.
All CVEs affecting Yoast Yoast Seo →
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