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TI-2026-31013 Aliases CVE-2026-42793GHSA-qf4g-9fqq-mmm7

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

Priority LOW 37CWE-770Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
Present
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub. Impact type from CWE-770.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00613 49th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed absinthe (absinthe-graphql): 1.10.2absinthe (Hex): 1.10.2

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
absinthe-graphqlabsinthe1.5.0 to before 1.10.21.10.2Patch availableCNA
—absinthe (Hex)1.5.0 to before 1.10.21.10.2Patch availableGHSA-qf4g-9fqq-mmm7
  • absinthe Vendorabsinthe-graphql Affected 1.5.0 to before 1.10.2 Fixed in 1.10.2 Patch available CNA
  • absinthe (Hex) Vendor— Affected 1.5.0 to before 1.10.2 Fixed in 1.10.2 Patch available GHSA-qf4g-9fqq-mmm7

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:absinthe-graphql:absinthe:*:*:*:*:*:*:*:*after 1.5.0, before 1.10.2Vulnerableabsinthe-graphql
  • cpe:2.3:a:absinthe-graphql:absinthe:*:*:*:*:*:*:*:* Versions after 1.5.0, before 1.10.2 Vulnerable ·absinthe-graphql

Remediation

  • Fix · CNA absinthe (absinthe-graphql) Fixed in 1.10.2
  • Fix · GHSA-qf4g-9fqq-mmm7 absinthe (Hex) Fixed in 1.10.2 Advisory →

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    absinthe-graphql absinthe 1.10.2

    2 records Highest priority Priority MEDIUM 1 MEDIUM, 1 LOW

    Other records, highest priority first

    • TI-2026-32012 Quadratic fragment-name uniqueness check causes denial of service in absinthePriority MEDIUM 45
    Show all 2 records →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-42793
  2. 2026-10-03 Alias added: GHSA-qf4g-9fqq-mmm7
  3. 2026-10-25 EPSS moved to the below the 50th percentile

References

Exploit 1

Patch 1

Advisory 3

Other 1

  • TI-2026-32012 Quadratic fragment-name uniqueness check causes denial of service in absinthe CVSS 4.0HIGH 8.7

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences