TI-2026-69807 Aliases CVE-2026-107727 GHSA-m952-2w3f-6r8h

Strawberry legacy graphql-ws retains completed subscription slots

MEDIUM 51CWE-400Published 2026-10-08 · Updated 2026-10-13

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: High
Impact type: Denial of service
Confidentiality · integrity · availability: None · None · Low
Fix status: Partial Red Hat: 1 without a fix

Attack profile from CVSS 3.1 · CNA. Fix status from CNA, GitHub and Red Hat. Impact type from CWE-400.

Summary

Strawberry GraphQL from 0.312.3 before 0.327.2 keeps naturally completed operations in the legacy graphql-ws handler's tracking, a resource exhaustion flaw (CWE-400). A remote client without privileges can fill a connection's subscription slots with one-shot subscriptions, so later operations fail with "Subscription limit reached". The modern graphql-transport-ws protocol and deployments without a per-connection cap are not affected.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Description from the CNA

Strawberry GraphQL is a library for creating GraphQL APIs. From 0.312.3 until 0.327.2, the legacy graphql-ws subscription handler in strawberry/subscriptions/protocols/graphql_ws/handlers.py does not remove naturally completed operations from self.tasks and self.subscriptions. When max_subscriptions_per_connection is configured, a client on a persistent WebSocket connection can use distinct operation IDs for one-shot subscriptions to fill the connection's configured slots even after those subscriptions send complete, causing later legitimate operations on that connection to be rejected with Subscription limit reached. The modern graphql-transport-ws protocol and deployments without the configured per-connection cap are not affected. This issue is fixed in version 0.327.2.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.0043 37th percentileScored 2026-11-07

Fix Partial strawberry (strawberry-graphql): 0.327.2strawberry-graphql (PyPI): 0.327.2Red Hat: 1 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: Poc
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
strawberry-graphql	strawberry	0.312.3 to before 0.327.2	0.327.2	Patch available	CNA
—	strawberry-graphql (PyPI)	0.312.3 to before 0.327.2	0.327.2	Patch available	GHSA-m952-2w3f-6r8h

strawberry Vendorstrawberry-graphql Affected 0.312.3 to before 0.327.2 Fixed in 0.327.2 Patch available CNA
strawberry-graphql (PyPI) Vendor— Affected 0.312.3 to before 0.327.2 Fixed in 0.327.2 Patch available GHSA-m952-2w3f-6r8h

Remediation

Upgrade strawberry-graphql on PyPI to version 0.327.2, which fixes this flaw. Red Hat rates it Low and lists Exploit Intelligence as affected with no fix planned.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Fix · CNA strawberry (strawberry-graphql) Fixed in 0.327.2
Fix · GHSA-m952-2w3f-6r8h strawberry-graphql (PyPI) Fixed in 0.327.2 Advisory →

Vendor assessments

Red Hat

Red Hat rating: Low. Red Hat's page for this CVE →

Product	Status	Plan or fix
Exploit Intelligence	Affected	No fix planned: Out of support scope

Timeline

2026-10-09 Threatist record created from CVE-2026-107727
2026-10-09 Alias added: GHSA-m952-2w3f-6r8h
2026-10-09 Fix available: PyPI/[email protected] · GHSA-m952-2w3f-6r8h
2026-10-09 CVSS score added · GHSA-m952-2w3f-6r8h
2026-10-09 Weakness changed · GHSA-m952-2w3f-6r8h
2026-10-09 6 new references · GHSA-m952-2w3f-6r8h
2026-10-13 CISA SSVC decision points changed
2026-10-13 Priority changed: LOW → MEDIUM

References

Advisory 1

https://nvd.nist.gov/vuln/detail/CVE-2026-107727

Other 5

TI-2026-69808 Strawberry GraphQL permission check can bypass with awaitable results CVSS 3.1HIGH 7.5
TI-2026-35210 Strawberry GraphQL's Bypass of MaxAliasesLimiter via Fragment Spreads leading to GraphQL Alias Amplification CVSS 3.1MEDIUM 5.3
TI-2026-35209 Strawberry GraphQL has a Circular Fragment Reference DOS CVSS 3.1MEDIUM 5.3
TI-2009-01689 Directory traversal vulnerability in plugins/ddb/foot.php in Strawberry 1.1.1 allows… CVSS 2.0HIGH 9.3
TI-2026-27641 Strawberry GraphQL affected by a Denial of Service via unbounded WebSocket subscriptions CVSS 3.1HIGH 7.5
TI-2026-27639 Authentication bypass in strawberry-graphql via legacy graphql-ws WebSocket subprotocol CVSS 3.1HIGH 7.5

See all 9 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences