CVE-2026-42793— Atom table exhaustion via attacker-controlled GraphQL SDL names in absinthe

Atom table exhaustion via attacker-controlled GraphQL SDL names in absinthe

Allocation of Resources Without Limits or Throttling vulnerability in absinthe-graphql absinthe allows unauthenticated denial of service via atom table exhaustion when parsing attacker-controlled GraphQL SDL. Multiple Blueprint.Draft.convert/2 implementations in Absinthe's SDL language modules call String.to_atom/1 on attacker-controlled names from parsed GraphQL SDL documents, including directive names, field names, type names, and argument names. Because atoms are never garbage-collected and the BEAM atom table has a fixed limit (default 1,048,576), each unique name permanently consumes one slot. An attacker can exhaust the atom table by submitting SDL documents containing enough unique names, causing the Erlang VM to abort with system_limit and taking down the entire node. Any application that passes attacker-controlled GraphQL SDL through Absinthe's parser is exposed — for example, a schema-upload endpoint, a federation gateway that ingests remote SDL, or any developer tool that runs the parser over user-supplied documents. This issue affects absinthe: from 1.5.0 before 1.10.2.

N/A

不加限制或调节的资源分配

Absinthe 安全漏洞

Absinthe是Absinthe开源的一个基于Elixir的GraphQL实现框架。 absinthe 1.5.0版本至1.10.2之前版本存在安全漏洞，该漏洞源于资源分配无限制或节流，可能导致未经身份验证的攻击者通过解析攻击者控制的GraphQL SDL耗尽原子表并导致拒绝服务。

N/A

N/A