CVE-2023-48307 json
Nextcloud Mail app vulnerable to Server-Side Request Forgery
published 2023-11-21 2 y ago modified 2026-06-17 4 mo ago also EUVD-2023-52367
- cvss
- 3.5
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.9%
- EPSS 0.9% chance of exploitation in 30 days, percentile 58%
- public exploits
- 0
- none known
Summary
Nextcloud Mail is the mail app for Nextcloud, a self-hosted productivity platform. Starting in version 1.13.0 and prior to version 2.2.8 and 3.3.0, an attacker can use an unprotected endpoint in the Mail app to perform a SSRF attack. Nextcloud Mail app versions 2.2.8 and 3.3.0 contain a patch for this issue. As a workaround, disable the mail app.
Patch / fix
Exploit prediction
0.87% chance of exploitation in the next 30 days, higher than 58% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 3.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:L |
| NVD | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
Affected products
- nextcloud security-advisories
Classification
- Weakness
-
- CWE-918 Server-Side Request Forgery
References
-
github.com
/nextcloud/mail/pull/8709
issue-tracking, patch
-
github.com
/nextcloud/security-advisories/security/advisories/GHSA-4pp4-m8ph-2999
vendor-advisory
-
hackerone.com
/reports/1869714
permissions-required
Sources
- CVE List CVE-2023-48307
- NVD CVE-2023-48307
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