Security readout for executives and security teams
Plain-English summary
This is a low-severity Nextcloud audit logging flaw. When a user removed an expiration date from a shared item, the expected audit event was not recorded. The main business risk is reduced accountability for share lifecycle changes, not direct data theft or system compromise.
Executive priority
Treat as a routine patching and governance issue. Prioritize environments where audit evidence is required for compliance, investigations, or customer commitments, but do not rank it with remote code execution or data disclosure flaws.
Technical view
CVE-2021-32680 is CWE-778 insufficient logging in Nextcloud Server. A privileged local user action that unset a share expiration date was not properly written to audit logs. Affected versions are before 19.0.13, 20.0.11, and 21.0.3. Integrity impact is limited to audit trail accuracy.
Likely exposure
Organizations running Nextcloud Server below 19.0.13, 20.0.11, or 21.0.3 are potentially exposed, especially where audit logs support compliance, incident response, or share governance.
Exploitation context
The source bundle does not show CISA KEV listing or active exploitation. The issue requires an authenticated local user with share permissions and affects logging visibility rather than providing a direct access path.
Researcher notes
The advisory describes a missing audit event, not a bypass of sharing authorization. CVSS 3.3 reflects local access, low privileges, no confidentiality impact, and low integrity impact. Evidence is sufficient for affected versions and fixed versions, but not for exploitation in the wild.
Mitigation direction
- Upgrade Nextcloud Server to 19.0.13, 20.0.11, 21.0.3, or later supported releases.
- Review Fedora or Gentoo package advisories if Nextcloud is installed from those distributions.
- Check current vendor guidance for any additional supported remediation instructions.
- Review externally shared items for missing or unexpectedly removed expiration dates.
Validation and detection
- Inventory all Nextcloud Server instances and record their exact versions.
- Confirm audit logging is enabled where required for governance or compliance.
- In a non-production test, verify expiration-date removal is logged after patching.
- Review historical shares created or modified during the vulnerable version window.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
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ATT&CK lookup starting points
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CWE-778: Exact CWE lookup
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Open ATT&CK lookupCVE-2021-32680 mapping review
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Open ATT&CK lookup- Severity
- Low
- CVSS
- 3.3 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N1.81.4Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
3.3LowVector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Source materials
- CVE List V5 sourceCVE List V5
- https://github.com/nextcloud/security-advisories/security/advisories/GHSA-fxpq-wq7c-vppfCVE reference · x_refsource_CONFIRM
- https://github.com/nextcloud/server/pull/27024CVE reference · x_refsource_MISC
- https://hackerone.com/reports/1200810CVE reference · x_refsource_MISC
- FEDORA-2021-9b421b78afCVE reference · vendor-advisory, x_refsource_FEDORA
- FEDORA-2021-6f327296feCVE reference · vendor-advisory, x_refsource_FEDORA
- GLSA-202208-17CVE reference · vendor-advisory, x_refsource_GENTOO
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Insufficient Logging
Insufficient Logging represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.