Arbitrary file deletion in NeMo ASR webapp

Exploitation

No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.

CVSS

2.0 · CVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:U/C:N/I:L/A:N

EPSS

• CVE-2022-22821: 0.31% estimated exploitation activity in the next 30 days; percentile 23.92 (FIRST EPSS, 2026-11-03). This is a model estimate, not proof of exploitation or customer exposure.

As published by the source; long descriptions are shortened.

Description NVIDIA NeMo contains a vulnerability in ASR WebApp, where Relative Path Traversal (CWE-23) may lead to deletion of any directory through the "../" structure when admin privileges are available. CVSS Score = 2.0 https://nvd.nist.gov/vuln-metrics/cvss/v3-calculator?vector=AV:L/AC:L/PR:H/UI:R/S:U/C:N/I:L/A:N Impact When the optional tool ASR Webapp (https://github.com/NVIDIA/NeMo/tree/main/tools/asrwebapp) is used prior to commit https://github.com/NVIDIA/NeMo/commit/f7e4ed7e4f7f2fa43765a38c2fafa1b6d1ebd7c0, some interfaces do not verify user input. Malicious attackers can construct malicious requests to delete any directory through the "../" structure. The vulnerability affects only cases where this particular web app is started by a user with superuser permissions. The web application is not a part of the regular pip release or the corresponding container, and impacts only users that clone the repository in its entirety and execute the web app (while also possessing…

Published by the source

11 Jan 2022, 00:00 UTC

Last modified by the source

8 Jul 2026, 06:49 UTC

Source last checked

26 Oct 2026, 13:08 UTC

1. Revision 3 · amended · 26 Oct 2026

   Amended from ghsa record GHSA-rpx7-33j2-xx9x

2. Revision 2 · amended · 24 Oct 2026

   Amended from osv record GHSA-rpx7-33j2-xx9x

3. Revision 1 · created · 24 Oct 2026

   Published from osv record GHSA-9hg3-hmmf-c3gr

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# Patch Next advisory brief: CVE-2022-22821

Advisory: Arbitrary file deletion in NeMo ASR webapp
IDs: CVE-2022-22821, GHSA-9hg3-hmmf-c3gr
Record: https://patchnext.com/advisories/cve-2022-22821 (revision 3, source checked 26 Oct 2026, 13:08 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: Low (CVSS 2.0)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor fix available; fixed versions by package: nemo-toolkit 1.6.0. A vendor fix does not mean a deployment is fixed.

## Affected components
- PyPI nemo-toolkit: affected < 1.6.0; fixed in 1.6.0

## Suggested inspection (read-only)
- `python -m pip show nemo-toolkit`: prints the installed version. Run with the environment that serves production active.

## Supported action
Upgrade each affected component to a fixed version on its release line. For a transitive dependency, upgrade the parent package or add an override or constraint, then regenerate the lockfile. Redeploy every environment that ran an affected version.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on nemo-toolkit.
- Repeat the inspection and confirm that only fixed versions remain installed.

## Rollback considerations
- Keep the previous lockfile and deployment artifact. Rolling back reinstates the vulnerable version, so apply any documented mitigation while you fix forward.

## Unresolved questions
- Which deployments run an affected version?
- Exploitation status can change. Check again before lowering the priority.
- Mark the work resolved only after the fixed version is verified in production.

## Sources
- Verified: https://osv.dev/vulnerability/GHSA-9hg3-hmmf-c3gr (OSV record GHSA-9hg3-hmmf-c3gr lists affected ranges: PyPI nemo-toolkit >=0 <1.6.0 (fixed))
- Verified: https://osv.dev/vulnerability/GHSA-rpx7-33j2-xx9x (OSV record GHSA-rpx7-33j2-xx9x lists affected ranges: PyPI nemo-toolkit >=0 <1.6.0 (fixed))
- Verified: https://github.com/advisories/GHSA-rpx7-33j2-xx9x (GitHub-reviewed advisory GHSA-rpx7-33j2-xx9x lists affected ranges: PyPI nemo-toolkit >=0 <1.6.0)

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