CVE-2026-42793
Unauthenticated DoS via atom table exhaustion in Absinthe GraphQL parser
Is CVE-2026-42793 being exploited?
Not confirmed. CVE-2026-42793 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.61% probability of exploitation in the next 30 days.
How severe is CVE-2026-42793?
CVE-2026-42793 is rated High with a CVSS score of 8.2. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-42793?
Yes. A fix has been recorded for CVE-2026-42793. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-42793 affect?
CVE-2026-42793 affects absinthe (Elixir GraphQL toolkit) 1.5.0 - 1.10.2. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-42793?
Upgrade to Absinthe 1.10.2+
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Unauthenticated remote DoS by exhausting BEAM atom table via attacker-controlled SDL; could crash Erlang VM and take down the node
Patch when possible
- affected>= 1.5.0 and < 1.10.2
- affected>= d0eae7764520d4e8e5dfff619068c0de911aec33 and < dd842b938e3823f345c10416914ffab5d5536838
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.