What is CVE-2022-31132?

CVE-2022-31132 is a high-severity vulnerability in Nextcloud Mail, classified under Server-Side Request Forgery (SSRF). CVSS score: 8.3/10. Published 2022-08-04.

How severe is CVE-2022-31132?

High severity. CVSS v3 base score is 8.3 out of 10.

SSRF in Nextcloud Mail

CVE-2022-31132

Nextcloud Mail is an email application for the nextcloud personal cloud product. Affected versions shipped with a CSS minifier on the path `./vendor/cerdic/css-tidy/css_optimiser.php`. Access to the minifier is unrestricted and access may lead to Server-Side Request Forgery (SSRF). It is recommendet to upgrade to Mail 1.12.7 or Mail 1.13.6. Users unable to upgrade may manually delete the file located at `./vendor/cerdic/css-tidy/css_optimiser.php`

Vulnerability class: SSRF (Server-Side Request Forgery)

Published 2022-08-04 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.3 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:L.

EPSS exploit prediction

EPSS: 0.007 (52.4th percentile), scored 2026-10-18.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 52nd percentile — 52.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: +0.000

Affected products

Nextcloud Mail
Nextcloud Security-Advisories — versions < 1.12.8, >= 1.13.0, < 1.13.6

Weakness classification (CWE)

CWE-918 — Server-Side Request Forgery (SSRF)

References

github.com/nextcloud/security-advisories/security/advisories/GHSA-24pm-rjfv-23mh (Third Party Advisory)

Frequently asked questions

What is CVE-2022-31132?: CVE-2022-31132 is a high-severity vulnerability in Nextcloud Mail, classified under Server-Side Request Forgery (SSRF). CVSS score: 8.3/10. Published 2022-08-04.
How severe is CVE-2022-31132?: High severity. CVSS v3 base score is 8.3 out of 10.