CVE-2026-23897 (GCVE-0-2026-23897)
Vulnerability from cvelistv5
Published
2026-02-04 19:18
Modified
2026-02-04 19:55
CWE
  • CWE-1333 - Inefficient Regular Expression Complexity
Summary
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 for integration packages, like @as-integrations/express5 or @as-integrations/next, only direct usage of startStandaloneServer.
Impacted products
Vendor Product Version
apollographql apollo-server Version: >= 2.0.0, <= 3.13.0
Version: >= 4.2.0, < 4.13.0
Version: >= 5.0.0, < 5.4.0
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Show details on NVD website


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  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
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