CVE Explorer

CVE-2026-23897

Apollo Server is an open-source, spec-compliant GraphQL server that's compatible with any GraphQL client, including Apollo Client. In versions from 2.0.0 to 3.13.0, 4.2.0 to before 4.13.0, and 5.0.0 to before 5.4.0, the default configuration of startStandaloneServer from @apollo/server/standalone is vulnerable to denial of service (DoS) attacks through specially crafted request bodies with exotic character set encodings. This issue does not affect users that use @apollo/server as a dependency fo

Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:069f4c976936dbb7c3ac23f3c59a2d4cd12c5fa74e684262c20c654f91d29e7b

Known exploited

Not asserted

Disputed

Stale source

Conflicts

Affected products and versions

1 source assertion

{"product":"apollo-server","vendor":"apollographql","versions":[{"status":"affected","version":">= 2.0.0, <= 3.13.0"},{"status":"affected","version":">= 4.2.0, < 4.13.0"},{"status":"affected","version":">= 5.0.0, < 5.4.0"}]}

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:aa94393eb2f87fa3f1f195d79304dbe0699ae623a1160846fb7b14f880ed5684 · sha256:120eded5ffd33d3c… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion

{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"metric_type":"cvssV3_1"}

cve_program_cvelist_v5cvss
urn:baitaphish:normalized-source-record:v2:aa94393eb2f87fa3f1f195d79304dbe0699ae623a1160846fb7b14f880ed5684 · sha256:120eded5ffd33d3c… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion

{"cweId":"CWE-1333","description":"CWE-1333: Inefficient Regular Expression Complexity","lang":"en","type":"CWE"}

cve_program_cvelist_v5cwe
urn:baitaphish:normalized-source-record:v2:aa94393eb2f87fa3f1f195d79304dbe0699ae623a1160846fb7b14f880ed5684 · sha256:120eded5ffd33d3c… · /containers/cna/problemTypes/0/descriptions/0

Source references

3 source assertions

{"name":"https://github.com/apollographql/apollo-server/commit/d25a5bdc377826ad424fcf7f8d1d062055911643","tags":["x_refsource_MISC"],"url":"https://github.com/apollographql/apollo-server/commit/d25a5bdc377826ad424fcf7f8d1d062055911643"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:aa94393eb2f87fa3f1f195d79304dbe0699ae623a1160846fb7b14f880ed5684 · sha256:120eded5ffd33d3c… · /containers/cna/references/1

{"name":"https://github.com/apollographql/apollo-server/commit/e9d49d163a86b8a33be56ed27c494b9acd5400a4","tags":["x_refsource_MISC"],"url":"https://github.com/apollographql/apollo-server/commit/e9d49d163a86b8a33be56ed27c494b9acd5400a4"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:aa94393eb2f87fa3f1f195d79304dbe0699ae623a1160846fb7b14f880ed5684 · sha256:120eded5ffd33d3c… · /containers/cna/references/2

{"name":"https://github.com/apollographql/apollo-server/security/advisories/GHSA-mp6q-xf9x-fwf7","tags":["x_refsource_CONFIRM"],"url":"https://github.com/apollographql/apollo-server/security/advisories/GHSA-mp6q-xf9x-fwf7"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:aa94393eb2f87fa3f1f195d79304dbe0699ae623a1160846fb7b14f880ed5684 · sha256:120eded5ffd33d3c… · /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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