CVE-2026-115887
GraphQL Scalars is a library of custom GraphQL scalars for creating precise type-safe GraphQL schemas.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.41%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
GraphQL Scalars is a library of custom GraphQL scalars for creating precise type-safe GraphQL schemas. From 1.24.1 until 2.0.1, GraphQLPhoneNumber in src/scalars/PhoneNumber.ts uses ambiguous nested digit quantifiers that backtrack exponentially when a PhoneNumber value contains a run of digits followed by a character that makes the match fail. GraphQL evaluates parseLiteral during document validation and parseValue during variable coercion before resolver authentication or authorization, so a small unauthenticated request can block the Node.js event loop and stall the server process. serialize is also affected when unvalidated stored values are returned through the scalar. This issue is fixed in version 2.0.1.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.41% probability · 35th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-1333
- Source
- security-advisories@github.com
EPSS moved from 0.7% on 24 October 2026 to 0.4% on 26 October 2026.
References
- https://github.com/graphql-hive/graphql-scalars/commit/210fd2485641afa2452800c00144245c74361701
- https://github.com/graphql-hive/graphql-scalars/pull/2719
- https://github.com/graphql-hive/graphql-scalars/releases/tag/v2.0.1
- https://github.com/graphql-hive/graphql-scalars/security/advisories/GHSA-x8rm-f576-gq67
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.