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CVE-2026-82743: CWE-400 Uncontrolled Resource Consumption in ash-project ash

0
Low
VulnerabilityCVE-2026-82743cvecve-2026-82743cwe-400
Published: 09/01/2026 (09/01/2026, 03:37:24 UTC)
Source: CVE Database V5
Vendor/Project: ash-project
Product: ash

Description

Uncontrolled Resource Consumption vulnerability in ash-project ash lets a slow asynchronous read spin a scheduler thread at full CPU while the framework waits for it. Ash.Actions.Read.AsyncLimiter.await_at_least_one/1 (lib/ash/actions/read/async_limiter.ex) waited for concurrent async read tasks by polling each with Task.yield(task, 0) in a tight loop rather than blocking. While every outstanding task is still running (a slow related-data load or calculation), the loop returns immediately and repeats, busy-spinning and holding a BEAM scheduler at full CPU for the whole duration of the slow read; concurrent slow reads tie up further schedulers. The fix waits with Task.yield_many (a non-blocking sweep followed by a blocking wait with timeout: :infinity), so the process sleeps until a task completes instead of spinning. This issue affects ash: from 2.19.0 before 3.32.2.

CVSS v4.0

Score 2.1low

Attack Vector
Local
Attack Complexity
Low
Attack Requirements
Present
Privileges Required
None
User Interaction
None
Vuln. Confidentiality
None
Vuln. Integrity
None
Vuln. Availability
Low
Subsq. Confidentiality
None
Subsq. Integrity
None
Subsq. Availability
None
CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

Affected software

ash
pkg:hex/ash
Affected versions
>=2.19.0 <3.32.2
GitHub Actionsmore threats →cve
ash-project/ash
pkg:github/ash-project/ash
CPE configurations
cpe:2.3:a:ash-project:ash:*:*:*:*:*:*:*:*

Run on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.

Technical Details

Data Version
5.2
Assigner Short Name
EEF
Date Reserved
2026-08-31T01:00:09.774Z
Cvss Version
4.0
State
PUBLISHED
Remediation Level
null

Threat ID: 6a964c16acd9273b492d135f

Added to database: 09/01/2026, 03:52:54 UTC

Last updated: 09/01/2026, 04:37:19 UTC

Views: 5

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