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Fencer Intel
low 3.3

CVE-2026-3449 json

@tootallnate/once vulnerable to Incorrect Control Flow Scoping

published 8mo ago modified last mo. also GHSA-vpq2-c234-7xj6 , EUVD-2026-9278

cvss
3.3
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.1%
EPSS 0.1% chance of exploitation in 30 days, percentile 2%
public exploits
0
none known

Summary

Versions of the package @tootallnate/once before 3.0.1 are vulnerable to Incorrect Control Flow Scoping in promise resolving when AbortSignal option is used. The Promise remains in a permanently pending state after the signal is aborted, causing any await or .then() usage to hang indefinitely. This can cause a control-flow leak that can lead to stalled requests, blocked workers, or degraded application availability.

Patch / fix

  • npm @tootallnate/once 2.0.1, 3.0.1
  • n/a @tootallnate/once 3.0.1
  • python-jupyterlab-templates openSUSE Tumbleweed 0.5.2-4.1
  • heroic-games-launcher openSUSE Tumbleweed 2.20.1-2.1

opensuse advisories openSUSE-SU-2026:10429-1openSUSE-SU-2026:10290-1

Is CVE-2026-3449 in your dependencies? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-3449 updated cvss 4.0

@tootallnate/once: @tootallnate/once: Denial of Service due to incorrect control flow scoping with AbortSignal

  • Red Hat Confidential Compute Attestation openshift-sandboxed-containers/osc-pccs Red Hat Cryostat 4 io.cryostat-cryostat Red Hat Migration Toolkit for Containers rhmtc/openshift-migration-ui-rhel8 Red Hat Network Observability Operator network-observability/network-observability-console-plugin-compat-rhel9 Red Hat OpenShift Pipelines openshift-pipelines/pipelines-hub-ui-rhel8, openshift-pipelines/pipelines-hub-ui-rhel9, openshift-pipelines/pipelines-hub-api-rhel8, openshift-pipelines/pipelines-console-plugin-rhel8, openshift-pipelines/pipelines-hub-db-migration-rhel8 Red Hat OpenShift Service Mesh 2 openshift-service-mesh/kiali-rhel8
    +17 more products
    Red Hat OpenShift Service Mesh 3 openshift-service-mesh/kiali-rhel9, openshift-service-mesh/kiali-rhel9-operator, openshift-service-mesh/kiali-operator-bundle Red Hat Advanced Cluster Management for Kubernetes 2 rhacm2/thanos-rhel9 Red Hat AMQ Broker 7 org.jolokia-jolokia-parent Red Hat Ansible Automation Platform 2 ansible-on-clouds/aoc-azure-aap-installer-rhel9 Red Hat build of Apicurio Registry 2 io.apicurio-apicurio-registry Red Hat build of OptaPlanner 8 org.optaweb.vehiclerouting-optaweb-vehicle-routing Red Hat Data Grid 8 org.infinispan-infinispan-console Red Hat Enterprise Linux 9 pcs, pcs-snmp Red Hat Enterprise Linux AI (RHEL AI) 3 rhelai3/bootc-cuda-rhel9, rhelai3/disk-image-cuda-rhel9 Red Hat Fuse 7 io.syndesis-syndesis-parent Red Hat JBoss Enterprise Application Platform 7 org.jboss.hal-hal-parent Red Hat OpenShift AI (RHOAI) rhoai/odh-workbench-codeserver-datascience-cpu-py312-rhel9 Red Hat Openshift Data Foundation 4 odf4/mcg-core-rhel9 Red Hat OpenShift Dev Spaces devspaces/code-rhel9, devspaces/code-sshd-rhel9 Red Hat OpenShift GitOps openshift-gitops-1/argocd-rhel8, openshift-gitops-1/argocd-rhel9 Red Hat Quay 3 quay/quay-rhel8 Red Hat Satellite 6 satellite/iop-vulnerability-frontend-rhel9
    affected: workaround, no fix available “Fix deferred”

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
Proof of concept is public
Automatable
no
Technical impact
partial
Assessed
8mo ago

Exploit prediction

0.13% chance of exploitation in the next 30 days, higher than 2% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
CNA 4.0 4.8 CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P
CNA 3.1 3.3 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P
CNA 4.0 1.9 CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/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
CNA 3.1 3.3 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
GitHub 3.1 3.3 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

Affected packages

ecosystem package affected fixed in
npm @tootallnate/once
>=3.0.0, <3.0.1
<2.0.1
3.0.1
2.0.1

Affected products

  • n/a @tootallnate/once

Classification

Weakness
  • CWE-705 Incorrect Control Flow Scoping

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.