Vulnerability-Lookup

GHSA-JH23-4VMR-7F8Q

Vulnerability from github – Published: 2026-08-11 21:33 – Updated: 2026-08-11 21:33

Details

Bash-it 3.2.0 contains a terminal escape sequence injection vulnerability in the barbuk theme's Python virtualenv prompt segment that allows local attackers to inject arbitrary terminal control sequences by embedding escape sequences in the requires-python field of a pyproject.toml file. When a user navigates into a directory containing a maliciously crafted pyproject.toml, the unfiltered field value is read via awk and concatenated directly into PS1 through __prompt-command without stripping control characters, causing injected OSC or CSI sequences to be written to and interpreted by the terminal emulator on every prompt render.

Severity

4.4 (Medium)


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

4.6 (Medium)


                  
                    CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N

Show details on source website

JSON

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{
  "affected": [],
  "aliases": [
    "CVE-2026-73036"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-150"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-08-11T20:18:46Z",
    "severity": "MODERATE"
  },
  "details": "Bash-it 3.2.0 contains a terminal escape sequence injection vulnerability in the barbuk theme\u0027s Python virtualenv prompt segment that allows local attackers to inject arbitrary terminal control sequences by embedding escape sequences in the requires-python field of a pyproject.toml file. When a user navigates into a directory containing a maliciously crafted pyproject.toml, the unfiltered field value is read via awk and concatenated directly into PS1 through __prompt-command without stripping control characters, causing injected OSC or CSI sequences to be written to and interpreted by the terminal emulator on every prompt render.",
  "id": "GHSA-jh23-4vmr-7f8q",
  "modified": "2026-08-11T21:33:10Z",
  "published": "2026-08-11T21:33:10Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-73036"
    },
    {
      "type": "WEB",
      "url": "https://github.com/Bash-it/bash-it/issues/2396"
    },
    {
      "type": "WEB",
      "url": "https://github.com/Bash-it/bash-it/pull/2397"
    },
    {
      "type": "WEB",
      "url": "https://github.com/Bash-it/bash-it/commit/fab8f57818f28bfc6f2a81f86a58981c4ea72e5a"
    },
    {
      "type": "WEB",
      "url": "https://github.com/Bash-it/bash-it"
    },
    {
      "type": "WEB",
      "url": "https://www.vulncheck.com/advisories/bash-it-barbuk-theme-terminal-escape-sequence-injection-via-pyproject-toml"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:L/SI:L/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",
      "type": "CVSS_V4"
    }
  ]
}

CVE-2026-73036 (GCVE-0-2026-73036)

Vulnerability from cvelistv5 – Published: 2026-08-11 19:37 – Updated: 2026-08-12 12:58

Title

Bash-it barbuk Theme 3.2.0 Terminal Escape Sequence Injection via pyproject.toml

Summary

Severity

4.6 (Medium)


                        
                          CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N

4.4 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-08-12 12:58 UTC

CWE

CWE-150 - Improper Neutralization of Escape, Meta, or Control Sequences

Assigner

VulnCheck

References

5 references

URL	Tags
https://github.com/Bash-it/bash-it	product
https://github.com/Bash-it/bash-it/commit/fab8f57…	patch
https://github.com/Bash-it/bash-it/issues/2396	issue-tracking
https://github.com/Bash-it/bash-it/pull/2397	technical-description
https://www.vulncheck.com/advisories/bash-it-barb…	third-party-advisory

Impacted products

1 product

Vendor	Product	Version
Bash-it	Bash-it	Affected: 0 , ≤ 3.2.0 (semver)

Date Public

2026-08-11 00:00

Credits

George Chen

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-73036",
                "options": [
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                    "Exploitation": "none"
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                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-08-12T12:58:17.355111Z",
                "version": "2.0.3"
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          "shortName": "CISA-ADP"
        },
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      }
    ],
    "cna": {
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          "product": "Bash-it",
          "vendor": "Bash-it",
          "versions": [
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        }
      ],
      "metrics": [
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          "tags": [
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}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.

Action not permitted

GHSA-JH23-4VMR-7F8Q

CVE-2026-73036 (GCVE-0-2026-73036)

Tags

Sightings

Nomenclature