CVE-2021-31779

FAUCET Score

CVE-2021-31779 describes a Server-Side Request Forgery (SSRF) vulnerability in the Yoast SEO extension for TYPO3, affecting versions prior to 7.2.1. This medium-severity flaw (CVSS 6.4) allows an authenticated backend user to initiate requests from the server, potentially leading to information disclosure or internal network access. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

Vendor	Product	Version(s)	CPE
		< 7.2.1CPE matchmatch criteria	cpe:2.3:a:yoast:yoast_seo::::::typo3::*

CVSS Data

CVSS version used by this source: 3.1

6.4MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

LOW

Integrity Impact

LOW

Availability Impact

NONE

Exploitability Score

3.1

Impact Score

2.7

CvssVersion

3.1

Exploit Intelligence

EPSS Score

0.47%

Probability of exploitation in next 30 days

EPSS Percentile

38.4%

Percentile rank of EPSS score among Peer Group

As of 2026-07-27

Model: v2026.06.15

This CVE's current EPSS score of 0.0047 is in the 48th percentile among its peer group of 21,958 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

composerpatch availablevia ghsa

Product: yoast-seo-for-typo3/yoast_seoFixed in: 7.2.1

Vendor Advisories (1)

composerGHSA-m2q4-qghh-p9cqmedium

Server-Side Request Forgery in yoast_seo

May 21, 2021

References

typo3.org / security/advisory/typo3-ext-sa-2021-006

PatchThird Party Advisory