PatchSiren cyber security CVE debrief
CVE-2026-24332 Discord CVE debrief
CVE-2026-24332 is a medium-severity vulnerability in Discord's WebSocket API service that allows gathering information about whether a user's client state is Invisible. The vulnerability was published on 2026-01-22T08:16:00.857Z and last modified on 2026-09-13T00:17:06.233Z. This issue arises because the WebSocket API response includes users in the presences array with a status of 'offline', even when their client state is Invisible, which is described in the UI as 'You will appear offline.' This behavior can be exploited to determine if a user is Invisible rather than truly offline, potentially impacting user privacy and security assessments. Defenders should verify the presence
- Vendor
- Discord
- Product
- WebSocket API service
- CVSS
- MEDIUM 4.3
- CISA KEV
- Not listed in stored evidence
- Original CVE published
- 2026-01-22
- Original CVE updated
- 2026-09-13
- Advisory published
- 2026-01-22
- Advisory updated
- 2026-09-13
Who should care
Defenders responsible for Discord deployments and user security should assess the potential impact of this vulnerability on their organization's users. This includes verifying the presence of the vulnerability, evaluating its implications for user privacy and security, and implementing appropriate measures to mitigate potential risks. Security teams should prioritize this vulnerability based on its potential to compromise user information and its medium-se
Why it matters
CVE-2026-24332 is a medium-severity vulnerability in Discord's WebSocket API service that allows gathering information about whether a user's client state is Invisible. Defenders should prioritize verifying the presence of this vulnerability in their Discord deployments and assess the potential impact on their organization's users.
- Defenders need to verify the presence of this vulnerability in their Discord deployments
- Assess the potential impact on the organization's users
- Monitor for potential exploitation attempts
Technical summary
The vulnerability allows gathering information about whether a user's client state is Invisible (and not actually offline) because the response to a WebSocket API request includes the user in the presences array (with 'status': 'offline'), whereas offline users are omitted from the presences array. This inconsistency between the API response and the UI description of Invisible as 'You will appear offline' can be used to infer a user's status, potentially impacting user privacy and security assessments. The issue highlights the importance of consistent behavior across API and UI representations of user status.
Defensive priority
Defenders should prioritize verifying the presence of this vulnerability in their Discord deployments and assess the potential impact on their organization's users.
Recommended defensive actions
- Verify the presence of this vulnerability in Discord deployments
- Assess the potential impact on the organization's users
- Monitor for potential exploitation attempts
- Review compensating controls for exposed systems while remediation is scheduled and verified
- Check relevant monitoring, detection, and logs for exposed assets that need extra review
- Track exceptions, retest remediated assets, and close the item only after evidence is documented
- Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up
Evidence notes
The vulnerability is described in the CVE record and NVD vulnerability detail page. A third-party report suggests that this was remediated later in 2026. The CVE record was published on 2026-01-22T08:16:00.857Z and has not been modified since then. Evidence is limited to public CVE and NVD descriptions, with no additional claims of affected scope or exploit detail.
Sources and references
Verified primary and authoritative sources
-
CVE-2026-24332 CVE Program record
Publisher, destination, and source semantics verified
URL: https://www.cve.org/CVERecord?id=CVE-2026-24332
CVE Program - Official CVE Program record with source-provided CVE metadata.
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CVE-2026-24332 NVD vulnerability detail
Publisher, destination, and source semantics verified
URL: https://nvd.nist.gov/vuln/detail/CVE-2026-24332
NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.
Supplemental references
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Source reference
Unverified legacy reference
URL: https://xmrcat.org/discord-invisibility-bypass
Methodology and review provenance
AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.