CVE-2023-239435.0MediumCWE-918

CVE-2023-23943: Blind SSRF via server URL input in the Nextcloud Mail app

nextcloud · security-advisories

Affected: nextcloud security-advisories · Exploitation: unlikely (under 1%)

Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.

0.9%probability of exploitation in the next 30 days

60th percentile

050100

Higher than 60% of scored CVEs

5.0MediumCVSS 3.1

LowMediumHighCrit.

DescriptionCVE.org

Nextcloud mail is an email app for the nextcloud home server platform. In affected versions the SMTP, IMAP and Sieve host fields allowed to scan for internal services and servers reachable from within the local network of the Nextcloud Server. It is recommended that the Nextcloud Maill app is upgraded to 1.15.0 or 2.2.2. The only known workaround for this issue is to completely disable the nextcloud mail app.

Affected products1

From the CVE record. A product or version that is not listed is unknown, not unaffected.

nextcloud · security-advisories>= 2.0.0, < 2.2.2; < 1.15.0

On the Atlas

Every published CVE is on the CyberSIXT Atlas, grouped by weakness, vendor and month.

Open the Atlas

Exploitation: Unlikely (under 1%). EPSS under 1%, or no score yet.
CISA KEV: Not listed
Public check: No public nuclei template
Weakness: Server-Side Request Forgery
Vendor: nextcloud
Published: February 2023
Band: Unlikely (under 1%), February 2023
Bounty reports: 3 disclosed on HackerOne

Disclosed bug bounty reports about CVE-2023-23943

The reports on HackerOne that name this CVE, with HackerOne's own outcome. Titles and metadata only.

Mail app - blind SSRF via imapHost parameterNextcloud · 2023 · low severityValid
Mail app - blind SSRF via smtpHost parameterNextcloud · 2023 · low severityValid
Mail app - Blind SSRF via Sierve server fonctionnality and sieveHost parameterNextcloud · 2023 · low severityValid

CoverageNo articles yet

No CyberSIXT article names CVE-2023-23943 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.