CVE-2026-56324
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedCapgo before 12.128.2 contains a rate limit bypass vulnerability in the channel_self endpoint that allows attackers to circumvent rate limiting by rotating the user-controlled device_id parameter. Attackers can send multiple requests per second by changing device_id values to flood the channel_devices table and cause database exhaustion.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · high confidenceCapgo before version 12.128.2 has a rate limit bypass in the channel_self endpoint where attackers rotate the user-controlled device_id parameter to circumvent per-device rate limits. This allows attackers to send multiple requests per second, flooding the channel_devices table and causing database exhaustion.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Network
- Complexity
- Low
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- Low
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Check installed Capgo versionLocate the Capgo application version in your deployment (check package.json, docker image tags, or admin dashboard About section) and compare it to 12.128.2Affected if Version is lower than 12.128.2
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Verify channel_self endpoint exposureIdentify if the /api/channels/self or equivalent channel_self API endpoint is publicly accessible or exposed to untrusted usersAffected if Endpoint is exposed to users who can supply arbitrary device_id values
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Inspect rate limiting configurationReview rate limiting settings for the channel_self endpoint, specifically check if limits are applied per-device-id rather than per-IP or per-accountAffected if Rate limits are enforced solely on device_id without additional constraints (IP, account, fingerprint)
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Examine channel_devices table activityQuery the channel_devices table for unusual patterns: many recent inserts, duplicate device_ids across short time windows, or growing row counts without cleanupAffected if Table shows rapid growth or many distinct device_ids created in a short period
You are affected if running Capgo below version 12.128.2 with an exposed channel_self endpoint that enforces rate limits only per device_id, and the channel_devices table shows signs of rapid or anomalous growth.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
dbcve · scopedImplement rate limiting that accounts for device_id rotation patterns (e.g., rate limit per source IP, account, or implement device fingerprinting) and add database cleanup or pagination to prevent exhaustion of the channel_devices table.
Capgo 12.128.2 or later
- 1. Identify the current version of Capgo installed in your environment
- 2. Upgrade Capgo to version 12.128.2 or later to resolve the rate limit bypass vulnerability
- 3. Verify the upgrade was successful by checking the Capgo version
- 4. Monitor the channel_self endpoint and channel_devices table for any abnormal request patterns after patching
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation3.0 h
- Implementation6.0 h
- Testing3.0 h
- Review / QA2.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2026-56324 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2026-56324 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
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