PT-2026-39146 · Absinthe · Absinthe

Curtis Schiewek + 1 · Published 2026-05-08 · Updated 2026-05-14 · CVE-2026-42793

Positive Technologies (AI Summary)

CVSS v4.0

8.2

High

Base vector

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

Name of the Vulnerable Software and Affected Versions absinthe versions 1.5.0 through 1.10.1

Description An unauthenticated denial of service can occur via atom table exhaustion when parsing attacker-controlled GraphQL SDL. Multiple Blueprint.Draft.convert/2 implementations in the SDL language modules call String.to atom/1 on attacker-controlled names, such as directive, field, type, and argument names. Since atoms are not garbage-collected and the BEAM atom table has a fixed limit, submitting SDL documents with numerous unique names can exhaust the table, causing the Erlang VM to abort with a system limit and crashing the entire node. Applications passing attacker-controlled GraphQL SDL through the parser, such as schema-upload endpoints or federation gateways ingesting remote SDL, are exposed.

Recommendations Update to version 1.10.2.

Fix

DoS

Allocation of Resources Without Limits

Weakness Enumeration

CWE-770

Related Identifiers

CVE-2026-42793

GHSA-QF4G-9FQQ-MMM7

Affected Products

Absinthe

References · 12

• https://github.com/absinthe-graphql/absinthe/commit/dd842b938e3823f345c10416914ffab5d5536838 · Patch
• https://github.com/absinthe-graphql/absinthe/security/advisories/GHSA-qf4g-9fqq-mmm7 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-42793 · Security Note
• https://osv.dev/vulnerability/EEF-CVE-2026-42793 · Vendor Advisory
• https://osv.dev/vulnerability/GHSA-qf4g-9fqq-mmm7 · Vendor Advisory
• https://github.com/absinthe-graphql/absinthe · Note
• https://twitter.com/CVEnew/status/2052810968636284937 · Twitter Post
• https://t.me/CVEtracker/53136 · Telegram Post
• https://cna.erlef.org/cves/CVE-2026-42793.html · Note
• https://t.me/cveNotify/162871 · Telegram Post
• https://hex.pm/packages/absinthe · Note
• https://t.me/cveNotify/163328 · Telegram Post