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CVE-2021-32748

18
FAUCET Score

CVE-2021-32748 affects Nextcloud Richdocuments, specifically the communication between Nextcloud and Collabora Editor via the WOPI protocol, which lacked credential or IP-based protection. This vulnerability has a CVSS score of 4.3 (MEDIUM) and allows an authenticated attacker to bypass enforced watermarks or download protections, though it does not grant unauthorized data access. There is no known active exploitation, public exploit code, or significant community discussion, and the vulnerability is not listed in CISA's KEV catalog.

Impacted Technologies

VendorProductVersion(s)CPE
< 3.8.3CPE matchmatch criteria
cpe:2.3:a:nextcloud:richdocuments:*:*:*:*:*:*:*:*
>= 4.0.0, < 4.2.0CPE matchmatch criteria
cpe:2.3:a:nextcloud:richdocuments:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

4.3MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
1.4
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.99%
Probability of exploitation in next 30 days
EPSS Percentile
58.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0099 is in the 72nd percentile among its peer group of 21,958 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

Remediation records are not available for this CVE.

References

github.com / nextcloud/richdocuments/pull/1640
Third Party Advisory
github.com / nextcloud/security-advisories/security/advisories/GHSA-24x8-h6m2-9jf2
Third Party Advisory
hackerone.com / reports/1194606
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