CVE-2026-3449
@tootallnate/once vulnerable to Incorrect Control Flow Scoping
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.
Attack profile
How easy it is to exploit
- Attack vector
- Local
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- None
- Availability
- Low
Exploit likelihood
What each source reports
CVE List Score used
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.
- Record
CVE-2026-3449- CVSS 4.0
- 4.8 Medium
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 - CVSS 3.1
- 3.3 Low
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P - Weakness
- CWE-705
- Updated
- 2026-11-02
EUVDEUVD-2026-9278
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.
- Record
EUVD-2026-9278- CVSS 4.0
- 4.8 Medium
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 - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-vpq2-c234-7xj6
@tootallnate/once vulnerable to Incorrect Control Flow Scoping
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.
- Record
GHSA-vpq2-c234-7xj6- CVSS 4.0
- 1.9 Low
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 - CVSS 3.1
- 3.3 Low
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L - Weakness
- CWE-705
- Updated
- 2026-11-02
NVD
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.
- Record
CVE-2026-3449- CVSS 4.0
- 1.9 Low
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 - CVSS 3.1
- 3.3 Low
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L - Weakness
- CWE-705
- Updated
- 2026-11-02
OSV
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.
- Record
CVE-2026-3449- CVSS 4.0
- 1.9 Low
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 - Weakness
- CWE-705
- Updated
- 2026-11-02
OSVGHSA-vpq2-c234-7xj6
@tootallnate/once vulnerable to Incorrect Control Flow Scoping
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.
- Record
GHSA-vpq2-c234-7xj6- CVSS 4.0
- 1.9 Low
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 - CVSS 3.1
- 3.3 Low
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L - Weakness
- CWE-705
- Updated
- 2026-11-02
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OSVROOT-APP-NPM-CVE-2026-3449
CVE-2026-3449 in @tootallnate/once - Patched by Root
Root has patched CVE-2026-3449 in the @tootallnate/once package for Root:npm. Multiple fixed versions available.
- Record
ROOT-APP-NPM-CVE-2026-3449- CVSS 3.1
- 3.3 Low
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L - Updated
- 2026-11-02
OSVCLSA-2026-1792142145 No score
TuxCare security update for @tootallnate/once (1 CVE)
TuxCare rebuilt @tootallnate/once to address 1 CVE. Fixed in 2.0.0-tuxcare.3.
- Record
CLSA-2026-1792142145- Updated
- 2026-11-02
OSVopenSUSE-SU-2026:10290-1 No score
heroic-games-launcher-2.20.1-2.1 on GA media
These are all security issues fixed in the heroic-games-launcher-2.20.1-2.1 package on the GA media of openSUSE Tumbleweed.
- Record
openSUSE-SU-2026:10290-1- Updated
- 2026-11-02
OSVopenSUSE-SU-2026:10429-1 No score
jupyter-jupyterlab-templates-0.5.2-4.1 on GA media
These are all security issues fixed in the jupyter-jupyterlab-templates-0.5.2-4.1 package on the GA media of openSUSE Tumbleweed.
- Record
openSUSE-SU-2026:10429-1- Updated
- 2026-11-02
Affected packages
| Package | Affected | Fixed |
|---|---|---|
@tootallnate/oncenpm |
3.0.0 up to 3.0.1 | 3.0.1 |
@tootallnate/oncenpm |
before 2.0.1 | 2.0.1 |
@tootallnate/onceTuxCare:npm |
2.0.0-tuxcare.0 up to 2.0.0-tuxcare.3, plus listed versions 2.0.02.0.0-tuxcare.2 |
2.0.0-tuxcare.3 |
@tootallnate/onceRoot:npm |
before 2.0.1-aikido.1 | 2.0.1-aikido.12.0.0-aikido.22.0.1-aikido.21.1.2-aikido.11.1.2-aikido.22.0.0-aikido.3 |
@rootio/tootallnate__onceRoot:npm |
before 2.0.0-root.io.1 | 2.0.0-root.io.12.0.1-root.io.12.0.0-root.io.22.0.1-root.io.21.1.2-root.io.11.1.2-root.io.22.0.0-root.io.3 |
heroic-games-launcheropenSUSE:Tumbleweed |
before 2.20.1-2.1 | 2.20.1-2.1 |
python-jupyterlab-templatesopenSUSE:Tumbleweed |
before 0.5.2-4.1 | 0.5.2-4.1 |
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-3449 is a medium vulnerability (CVSS 4.8) in @tootallnate/once, published March 3, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.13%, the 2nd percentile. Fixed in @tootallnate/once 3.0.1.
References
security.snyk.io/vuln/SNYK-JS-TOOTALLNATEONCE-15250612
github.com/TooTallNate/once/issues/8
nvd.nist.gov/vuln/detail/CVE-2026-3449
suse.com/security/cve/CVE-2026-3449