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CVE-2021-22913

20
FAUCET Score

CVE-2021-22913 is an information disclosure vulnerability affecting Nextcloud Deck versions prior to 1.2.7 and 1.4.1. The flaw allows unauthorized access to user information when sharee searches default to the lookup server instead of the local Nextcloud instance. With a CVSS score of 6.5 (Medium), this vulnerability has a network attack vector and low attack complexity, potentially leading to high confidentiality impact. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.2.7CPE matchmatch criteria
cpe:2.3:a:nextcloud:deck:*:*:*:*:*:*:*:*
>= 1.3.0, < 1.4.1CPE matchmatch criteria
cpe:2.3:a:nextcloud:deck:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

6.5MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.37%
Probability of exploitation in next 30 days
EPSS Percentile
69.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0137 is in the 81st percentile among its peer group of 26,221 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 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

github.com / nextcloud/security-advisories/security/advisories/GHSA-h8f6-wg82-6p7r
Third Party Advisory
hackerone.com / reports/1167958
Issue TrackingThird Party Advisory