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CVE-2023-23944

22
FAUCET Score

CVE-2023-23944 is a medium-severity vulnerability affecting Nextcloud Mail versions prior to 2.2.2. During the OAuth2 setup process, user passwords were temporarily stored in cleartext within the database, making them accessible to any attacker or malicious user with database access. This vulnerability has a CVSS score of 6.5, indicating a network attack vector with low complexity and high confidentiality impact, but no integrity or availability impact. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
< 2.2.2CPE matchmatch criteria
cpe:2.3:a:nextcloud:mail:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

2.0LOW

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

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
HIGH
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
0.5
Impact Score
1.4
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 21,957 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)

github_advisorypatch availablevia nvd_reference
View patch

References

github.com / nextcloud/mail/pull/7797
Patch
github.com / nextcloud/security-advisories/security/advisories/GHSA-g86r-x755-93f4
Vendor Advisory
hackerone.com / reports/1806275
Permissions RequiredThird Party Advisory