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CVE Record

CVE-2022-39332: Cross-site scripting (XSS) in Nextcloud Desktop Client

Nexcloud desktop is the Desktop sync client for Nextcloud. An attacker can inject arbitrary HyperText Markup Language into the Desktop Client application via user status and information. It is recommended that the Nextcloud Desktop client is upgraded to 3.6.1. There are no known workarounds for this issue.

MediumCVSS 4.6Not KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

Nextcloud Desktop Client before 3.6.1 could display attacker-supplied status/profile information as HTML inside the desktop app. A successful attack requires a logged-in attacker and user interaction, but could expose or alter limited information in the client UI. Upgrade is the named fix; sources state no known workaround.

Executive priority

Handle through normal vulnerability management with a defined deadline. The issue is not known to be actively exploited and has limited impact, but it affects user endpoints and has a clear vendor fix. Prioritize environments with many untrusted or external Nextcloud users.

Technical view

CVE-2022-39332 is CWE-79 XSS in Nextcloud Desktop Client. User status and information fields were insufficiently sanitized, allowing arbitrary HTML injection in the application. CVSS 3.1 is 4.6: network reachable, low complexity, low privileges required, user interaction required, limited confidentiality and integrity impact, no availability impact.

Likely exposure

Organizations using Nextcloud Desktop Client versions earlier than 3.6.1 are potentially exposed. This is primarily endpoint-side exposure and does not, by itself, indicate Nextcloud server compromise. Risk is higher where untrusted or broad user communities can set visible status or profile information.

Exploitation context

The provided sources do not show known active exploitation, and the CVE is not marked KEV. The reported attack path requires a low-privileged attacker and user interaction. Public details identify HTML injection via status and information fields, but do not justify assuming weaponized exploitation.

Researcher notes

Evidence supports an XSS/HTML injection flaw in desktop client rendering of user status and information. Sources name upgrade to 3.6.1 and no workaround. Do not broaden this to server-side compromise without separate evidence. Debian LTS reference may matter for packaged client deployments.

Mitigation direction

  • Upgrade Nextcloud Desktop Client to version 3.6.1 or later.
  • Identify managed and unmanaged endpoints running older desktop client versions.
  • If using distribution packages, follow the relevant distributor security advisory.
  • Because no workaround is named, rely on vendor update guidance.

Validation and detection

  • Check installed Nextcloud Desktop Client versions across endpoint inventory.
  • Confirm no deployed client remains below version 3.6.1.
  • Review software management records for successful rollout completion.
  • Track Nextcloud and distributor advisories for any later remediation notes.
Prepared
Confidence
high
Sources
6

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

ATT&CK lookup starting points

Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.

cwe · medium confidence lookup

CWE-79: User-session and phishing behavior lookup

Client-side and session-facing weaknesses should be reviewed alongside initial-access and user-execution behaviors. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.

Open ATT&CK lookup
cve · low confidence lookup

CVE-2022-39332 mapping review

Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.

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Vulnerability profileCVE Program record
Severity
Medium
CVSS
4.6 (3.1)
Known Exploited
No
Published

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

Official CVE source material

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.

1CVSS vectors
0Timeline events
0ADP providers
5Source links

CVSS vector scores

1 official score

We 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.

ScoreVersionSeverityVectorExploitImpactSource
4.6CVSS 3.1MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N2.12.5Primary CVE score

Vulnerability scoring details

Base CVSS 3.1 score

4.6Medium
CVSS 3.1 vector shape for CVE-2022-39332Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

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

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Privileges Required
NoneLowHigh
User Interaction
NoneRequired
Scope
ChangedUnchanged
Confidentiality Impact
HighLowNone
Integrity Impact
HighLowNone
Availability Impact
HighLowNone

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
nextcloudsecurity-advisories< 3.6.1Listed
Weakness

CWE details

CWE-79

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.