vulnerability / NVI-00011913 / Revision 1
Strawberry legacy graphql-ws retains naturally completed subscription slots
GitHub lists this reviewed advisory for strawberry-graphql. Published version ranges and source prerequisites are shown below; this is not an inspection of a visitor’s application.
This report has not inspected your inventory, configuration, deployed build, reachability or evidence. A catalog listing and a severity score do not establish exposure or compromise.
01 / Meaning
Why it matters
Published affected context helps an owner decide what evidence to gather. This report has not examined your application.
3.7 low
GitHub source severity; exploitability and local consequence require separate evidence.
As of · GitHub Advisory Database
02 / Applicability
The affected context
Affected versions, configuration prerequisites and known exclusions are public. Confirm each one against the deployed service.
strawberry-graphql
source listed>= 0.312.3, < 0.327.2
### Summary Strawberry's legacy `graphql-ws` subscription handler can retain task and subscription bookkeeping after a one-shot subscription has naturally sent its `complete` message. When the application configures `max_subscriptions_per_connection`, the handler counts those completed operations in `len(self.tasks)`. A client that uses distinct operation IDs can therefore reach the configured subscription limit even though the earlier subscriptions have already completed, causing subsequent legitimate subscriptions on the same persistent WebSocket connection to receive `Subscription limit reached`. This is a conditional connection-level availability and resource-accounting issue. It requires explicit use of the legacy `graphql-ws` protocol, a persistent WebSocket connection, one-shot subscriptions that naturally complete, and a configured `max_subscriptions_per_connection` limit. It is not an unconditional issue in a default Strawberry installation and is distinct from the previously fixed single-connection infinite-subscription issue. ### Details The audited snapshot is Strawberry `0.324.4`, commit `c3caabd1188acda62045e7fd9ba9e37ac430cf96`. The relevant implementation is in
03 / Response
What to do next
- investigate
Identify the exact component and deployed version, examine the linked publisher’s conditions, and retain evidence of any mitigation.
Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system. GitHub Advisory Database
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04 / Limits
What this report cannot establish
- Customer inventory, deployment, reachability and exploitation have not been inspected.
05 / Provenance
Sources you can inspect
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- GHSA-m952-2w3f-6r8h ↗
GitHub Advisory Database · vendor advisory
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Public revision history
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- Revision 1 ·
First indexed by Null; source disclosure date is shown separately.