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CVE-2021-32676

21
FAUCET Score

CVE-2021-32676 affects Nextcloud Talk versions prior to 9.0.10, 10.0.8, and 11.2.2. The vulnerability stems from a failure to rotate session cookies after successful authentication in password-protected shared chats, leading to potential session hijacking. This medium-severity vulnerability has a CVSS score of 6.5, indicating a network-based attack with low complexity that could result in 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
< 9.0.10CPE matchmatch criteria
cpe:2.3:a:nextcloud:talk:*:*:*:*:*:*:*:*
>= 10.0.0, < 10.0.8CPE matchmatch criteria
cpe:2.3:a:nextcloud:talk:*:*:*:*:*:*:*:*
>= 11.2.0, < 11.2.2CPE matchmatch criteria
cpe:2.3:a:nextcloud:talk:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

6.5MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
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
0.95%
Probability of exploitation in next 30 days
EPSS Percentile
57.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0095 is in the 70th 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/security-advisories/security/advisories/GHSA-p6h7-84v4-827r
Third Party Advisory
hackerone.com / reports/1181962
Issue TrackingThird Party Advisory