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CVE-2026-124992

nushell Data Conversion ser.rs escape_bytes control sequence

Products / packages n/a nushell

Published

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Severity and exploitation

Not in CISA KEV

KEV coverage does not rule out exploitation.

KEV checked 14/11/2026, 23:55:31 UTC
VulDB · CVSS:4.0 · 4.8
Assessment vectorCVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P
VulDB · CVSS:3.1 · 3.3
Assessment vectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N/E:P/RL:X/RC:C
VulDB · CVSS:3.0 · 3.3
Assessment vectorCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N/E:P/RL:X/RC:C
VulDB · CVSS 2 / source score · 1.7
Assessment vectorAV:L/AC:L/Au:S/C:N/I:P/A:N/E:POC/RL:ND/RC:C
The headline uses the highest imported catalog score. Assessments can differ by source and CVSS version.

Severity

medium4.8

CVSS measures technical severity, not the likelihood of an attack.

Known exploitation

Not listed in the checked CISA KEV catalog

Absence from CISA KEV does not rule out attacks.

Public exploit

Not established by this record

Missing evidence does not mean no public exploit exists.

Remediation

Fix status not established

No structured fix or guidance is available here. Check the latest publisher advisory.

What this means

A vulnerability in nushell up to 0.116.1 allows local attackers to manipulate the escape_bytes function, leading to improper neutralization of escape sequences. The issue is in the Data Conversion Handler component. A fix is pending.

Summarized by @cf/meta/llama-3.3-70b-instruct-fp8-fast. Verify details against the original sources.

Attack conditions

No attack-condition excerpt has been identified here. Review the full source description and references for authentication, network access, and configuration requirements.

Review supporting sources →

Affected versions

Check the exact model, release, and any platform requirements against your installation.

n/a · VulDB

nushell

2 ranges
VulDB version evidence

Compare with this publisher’s ranges. This does not inspect your installation.

affected

0.116.0

0.116.1

unaffected

unknown

Other versions: unknown

Product identifiers (CPE)cpe:2.3:a:nushell:nushell:*:*:*:*:*:*:*:*
Automatic dependency matching is unavailable for this record. Use the product evidence and publisher’s instructions to check your installation.

What to do

Compare your installed product and version with the affected versions above. A matching product name alone does not confirm exposure.

No structured fix or remediation guidance is available here. Check the full source description and vendor’s latest advisory for a patch or workaround; do not assume another version is safe.

cve.new guidance unless attributed to a publisher. This page does not inspect your installation.

Public exploit evidence

No public exploit reference is identified in the imported evidence. This is not a claim that no exploit exists.

Original source description

Read the full publisher description

A vulnerability was identified in nushell up to 0.116.1. Impacted is the function escape_bytes of the file crates/nu-json/src/ser.rs of the component Data Conversion Handler. The manipulation leads to improper neutralization of escape, meta, or control sequences. The attack must be carried out locally. The pull request to fix this issue awaits acceptance.

References

7 sources
nushell/nushell · pull request #19443
PatchVulDB
VulDB · advisory #433164
Security advisoryVulDB
VulDB · threat intelligence #433164
Security advisoryVulDB
VulDB · CVE-2026-124992
Security advisoryVulDB
VulDB · submission #1040563
Source referenceVulDB
nushell/nushell · issues/19197
Source referenceVulDB
View 1 more references
nushell/nushell · repository
Source referenceVulDB

Inside the record

Evidence available

Package identity · not supplied
Version evidence
Remediation guidance · not supplied
Weakness classification
Additional publishers

Describes the evidence in this view, not whether the product is safe.

Original records

CVE-2026-124992

View the latest unmodified CVE JSON from the official source. It may be newer than this imported page.

cve.new JSON →

Underlying weaknesses

The source’s classification of what caused the vulnerability.

CWE-150 ↗

Improper Neutralization of Escape, Meta, or Control Sequences

VulDB

Related →
CWE-20 ↗

Improper Input Validation

VulDB

Related →
Contributing organizations · 2
VulDB

Assigning organization

2026-11-09
CISA-ADP

Additional data publisher

2026-11-10

Timeline

All times UTC

  1. Advisory published

    Publication date supplied by the source.

  2. Source updated

    Latest modification date supplied by the source.

  3. Last imported by cve.new

    Latest catalog import, not the date we first saw this advisory.

What changed

Follow changes
  1. CVE · CVE-2026-124992

    Observed 2026-11-10T19:24:58.333Z · upstream updated 2026-11-10T19:07:57.951Z

    Prioritization updated

    before

    []

    after

    [
  {
    "source": "CISA-ADP",
    "type": "SSVC",
    "role": "CISA Coordinator",
    "timestamp": "2026-11-10T18:18:23.517508Z",
    "decisions": [
      {
        "name": "Exploitation",
        "value": "none"
      },
      {
        "name": "Automatable",
        "value": "no"
      },
      {
        "name": "Technical Impact",
        "value": "partial"
      }
    ]
  }
]

Large field values are marked as truncated previews. Original source snapshots remain retained.

Showing up to 50 most recent observed changes.