CVE-2026-42793

HIGH EPSS 44.9%
Published May 8, 20261mo ago · Modified Jun 17, 20262w ago
8.2 CVSS 4.0
High
Find Similar
Published May 8, 2026 1mo ago
Last Modified Jun 17, 2026 2w ago

Description

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.

CVSS Details

Base Score
8.2
Exploitability
—
Impact
—
Vector string
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope X

Threat Intelligence

EPSS Exploit Probability
44.9% percentile
Exploit & Patch Status
Public Exploit Known
Patch Available

Weaknesses 1

CWE-770

Affected Products 1

VendorProductVersionRange
absinthe-graphqlabsinthe*>1.5.0  –  <1.10.2

References 4

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

Remediation

  • github.com https://github.com/absinthe-graphql/absinthe/commit/dd842b938e3823f345c10416914ffab5d5536838
    Patch