CVE-2026-42793

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2026-42793
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.

7.5 /10

CVSS v3 : HIGH

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://cna.erlef.org/cves/CVE-2026-42793.html Third Party Advisory
https://github.com/absinthe-graphql/absinthe/commit/dd842b938e3823f345c10416914ffab5d5536838 Patch
https://github.com/absinthe-graphql/absinthe/security/advisories/GHSA-qf4g-9fqq-mmm7 Exploit Vendor Advisory
https://osv.dev/vulnerability/EEF-CVE-2026-42793 Third Party Advisory
Configurations

Configuration 1 (hide)

cpe:2.3:a:absinthe-graphql:absinthe:*:*:*:*:*:*:*:*
History

22 May 2026, 14:13

Type Values Removed Values Added
References () https://cna.erlef.org/cves/CVE-2026-42793.html - () https://cna.erlef.org/cves/CVE-2026-42793.html - Third Party Advisory
References () https://github.com/absinthe-graphql/absinthe/commit/dd842b938e3823f345c10416914ffab5d5536838 - () https://github.com/absinthe-graphql/absinthe/commit/dd842b938e3823f345c10416914ffab5d5536838 - Patch
References () https://github.com/absinthe-graphql/absinthe/security/advisories/GHSA-qf4g-9fqq-mmm7 - () https://github.com/absinthe-graphql/absinthe/security/advisories/GHSA-qf4g-9fqq-mmm7 - Exploit, Vendor Advisory
References () https://osv.dev/vulnerability/EEF-CVE-2026-42793 - () https://osv.dev/vulnerability/EEF-CVE-2026-42793 - Third Party Advisory
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 7.5
CPE cpe:2.3:a:absinthe-graphql:absinthe:*:*:*:*:*:*:*:*
First Time Absinthe-graphql absinthe
Absinthe-graphql

09 May 2026, 13:16

Type Values Removed Values Added
References
  • () https://github.com/absinthe-graphql/absinthe/commit/dd842b938e3823f345c10416914ffab5d5536838 -

08 May 2026, 16:16

Type Values Removed Values Added
New CVE
Information

Published : 2026-05-08 16:16

Updated : 2026-05-22 14:13

NVD link : CVE-2026-42793

Mitre link : CVE-2026-42793

CVE.ORG link : CVE-2026-42793

JSON object : View

Products Affected

absinthe-graphql

  • absinthe
CWE
CWE-770

Allocation of Resources Without Limits or Throttling