2.1

CVE-2026-82744

Ash.Reactor change step fails open, skipping a change when its where guard raises

Not Failing Securely (Failing Open) vulnerability in ash-project ash skips an Ash.Reactor change when the guard controlling it raises, so a change meant to run does not.

An Ash.Reactor change step can be gated by where validations that decide whether the change runs. Ash.Reactor.ChangeStep (lib/ash/reactor/steps/change_step.ex) evaluated those guards in apply_where_clauses/3, and apply_validation rescued any exception into {:error, error}. The reduce treated that identically to a guard whose condition was simply not met and bypassed the change. So when a guard raises (for example on attacker-influenced input), a change that enforces a security-relevant modification is skipped rather than failing the step. The fix distinguishes a raised exception (now {:raised, error}) and halts the step with an error, failing closed.

This issue affects ash: from 3.0.0-rc.17 before 3.32.2.
Daten sind bereitgestellt durch das CVE Programm von einer CVE Numbering Authority (CNA) (Unstrukturiert).
Herstellerash-project
≫
Produkt ash
Default Statusunaffected
Version 3.0.0-rc.17
Version < 3.32.2
Status affected
Herstellerash-project
≫
Produkt ash
Default Statusunaffected
Version 321f43bd05ad9544e693cbf797243693e51a6be4
Version < 6d2eb86ea8d2ba5ffac89c1b8b9bf46e331feabc
Status affected
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.13% 0.031
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
6b3ad84c-e1a6-4bf7-a703-f496b71e49db 2.1 0 0
CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/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
CWE-636 Not Failing Securely ('Failing Open')

When the product encounters an error condition or failure, its design requires it to fall back to a state that is less secure than other options that are available, such as selecting the weakest encryption algorithm or using the most permissive access control restrictions.

https://github.com/ash-project/ash/security/advisories/GHSA-3xq4-m876-fr88
https://cna.erlef.org/cves/CVE-2026-82744.html
https://osv.dev/vulnerability/EEF-CVE-2026-82744
https://github.com/ash-project/ash/commit/6d2eb86ea8d2ba5ffac89c1b8b9bf46e331feabc