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CVE-2026-35523

Strawberry GraphQL is a library for creating GraphQL APIs. Strawberry up until version 0.312.3 is vulnerable to an authentication bypass on WebSocket subscription endpoints. The legacy graphql-ws subprotocol handler does not verify that a connection_init handshake has been completed before processing start (subscription) messages. This allows a remote attacker to skip the on_ws_connect authentication hook entirely by connecting with the graphql-ws subprotocol and sending a start message directly
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:e32fccaf4def40644b43b404e0e95628b25455c231046576993ce83adae2a727
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0

Affected products and versions

1 source assertion
{"product":"strawberry","vendor":"strawberry-graphql","versions":[{"status":"affected","version":"< 0.312.3"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:3e4dbc7e5a1fd621894da8122bda215e643ee9cf60dccc2d95a2b76f3a6f270e · sha256:61203448cb047ddc… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:3e4dbc7e5a1fd621894da8122bda215e643ee9cf60dccc2d95a2b76f3a6f270e · sha256:61203448cb047ddc… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion
{"cweId":"CWE-306","description":"CWE-306: Missing Authentication for Critical Function","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:3e4dbc7e5a1fd621894da8122bda215e643ee9cf60dccc2d95a2b76f3a6f270e · sha256:61203448cb047ddc… · /containers/cna/problemTypes/0/descriptions/0

Source references

1 source assertion
{"name":"https://github.com/strawberry-graphql/strawberry/security/advisories/GHSA-vpwc-v33q-mq89","tags":["x_refsource_CONFIRM"],"url":"https://github.com/strawberry-graphql/strawberry/security/advisories/GHSA-vpwc-v33q-mq89"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:3e4dbc7e5a1fd621894da8122bda215e643ee9cf60dccc2d95a2b76f3a6f270e · sha256:61203448cb047ddc… · /containers/cna/references/0

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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