CVE-2026-44972 (GCVE-0-2026-44972)

Vulnerability from cvelistv5 – Published: 2026-05-27 14:42 – Updated: 2026-05-27 15:34

Title

GuardDog: Unsanitized human-readable scan output allows terminal escape injection from malicious package content

Summary

GuardDog is a CLI tool to identify malicious PyPI packages. From 2.6.0 to 2.9.0, GuardDog includes attacker-controlled filenames, file locations, messages, and code snippets in its default human-readable output without escaping terminal control characters. A malicious package can therefore inject ANSI or OSC escape sequences into analyst terminals or CI logs.

Severity

5 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-05-27 15:34 UTC

CWE

CWE-116 - Improper Encoding or Escaping of Output

Assigner

GitHub_M mitre root Scorecard

References

1 reference

URL	Tags
https://github.com/DataDog/guarddog/security/advi…	x_refsource_CONFIRM

Impacted products

1 product

Vendor	Product	Version
DataDog	guarddog	Affected: >= 2.6.0, <= 2.9.0

Show details on NVD website

JSON

To clipboard

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        }
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            },
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            }
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EUVD-2026-322077

European Vulnerability Database identifier assigned by ENISA

Reserved

2026-10-02 07:44

Assigner

ENISA

Alias of

a CVE record, shown under related vulnerabilities. This identifier carries no description, severity or references of its own: they belong to that CVE.

JSON

To clipboard

{
  "assigner": "ENISA",
  "date_reserved": "2026-10-02T07:44:25.244009+00:00",
  "id": "EUVD-2026-322077"
}

FKIE_CVE-2026-44972

Vulnerability from fkie_nvd - Published: 2026-05-27 15:16 - Updated: 2026-06-17 10:51

Severity

5.0 (Medium) - CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Summary

References

	URL	Tags
	security-advisories@github.com	https://github.com/DataDog/guarddog/security/advisories/GHSA-m5p4-gvpx-4mvr

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "guarddog",
          "vendor": "DataDog",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e= 2.6.0, \u003c= 2.9.0"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "GuardDog is a CLI tool to identify malicious PyPI packages. From 2.6.0 to 2.9.0, GuardDog includes attacker-controlled filenames, file locations, messages, and code snippets in its default human-readable output without escaping terminal control characters. A malicious package can therefore inject ANSI or OSC escape sequences into analyst terminals or CI logs."
    }
  ],
  "id": "CVE-2026-44972",
  "lastModified": "2026-06-17T10:51:33.040",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "NONE",
          "baseScore": 5.0,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "LOW",
          "integrityImpact": "LOW",
          "privilegesRequired": "NONE",
          "scope": "CHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 2.7,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
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        "ssvcData": {
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          "options": [
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              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-05-27T15:34:24.334334Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-05-27T15:16:29.690",
  "references": [
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/DataDog/guarddog/security/advisories/GHSA-m5p4-gvpx-4mvr"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
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          "value": "CWE-116"
        }
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    }
  ]
}

GHSA-M5P4-GVPX-4MVR

Vulnerability from github – Published: 2026-05-11 14:43 – Updated: 2026-06-08 23:42

Summary

GuardDog: Unsanitized human-readable scan output allows terminal escape injection from malicious package content

Details

Summary

GuardDog includes attacker-controlled filenames, file locations, messages, and code snippets in its default human-readable output without escaping terminal control characters. A malicious package can therefore inject ANSI or OSC escape sequences into analyst terminals or CI logs.

Description

The finding formatter stores file paths and snippets from scanned content:

location = file_path + ":" + str(start_line)
finding = {
    "location": location,
    "code": code,
    "message": result["extra"]["message"],
}

The human-readable reporter later prints these values directly:

"  * " + finding["message"] + " at " + finding["location"] + "\n    " + _format_code_line_for_output(finding["code"])

No escaping is applied for control characters such as \x1b. A malicious package can therefore ship a filename like:

evil\x1b[2J.py

or matched source lines containing terminal escapes, which survive into the final CLI output.

Reproduction summary

Create a file whose name contains \x1b[2J.
Feed a semgrep-style result referencing that file into Analyzer._format_semgrep_response().
Render the result with HumanReadableReporter.print_scan_results().
The output string contains the raw escape bytes, which a terminal may interpret.

Key code paths

guarddog/analyzer/analyzer.py:377-392
guarddog/reporters/human_readable.py:36-42
guarddog/reporters/human_readable.py:84-91

Practical impact

This can be used to: - clear or rewrite analyst terminal output - inject misleading or spoofed log content in CI - emit clickable OSC 8 hyperlinks or title changes in compatible terminals

Prior public disclosure check

As of 2026-03-18, no matching public GitHub advisory, CVE, or public repo issue was found for this specific bug.

Suggested fix

Escape or strip terminal control characters before rendering any attacker-controlled value in human-readable output. This should cover package names, file paths, messages, and code snippets.

Severity

5.0 (Medium)


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

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "guarddog"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "2.6.0"
            },
            {
              "last_affected": "2.9.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-44972"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-116"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-05-11T14:43:43Z",
    "nvd_published_at": "2026-05-27T15:16:29Z",
    "severity": "MODERATE"
  },
  "details": "# Summary\nGuardDog includes attacker-controlled filenames, file locations, messages, and code snippets in its default human-readable output without escaping terminal control characters. A malicious package can therefore inject ANSI or OSC escape sequences into analyst terminals or CI logs.\n\n# Description\nThe finding formatter stores file paths and snippets from scanned content:\n\n```python\nlocation = file_path + \":\" + str(start_line)\nfinding = {\n    \"location\": location,\n    \"code\": code,\n    \"message\": result[\"extra\"][\"message\"],\n}\n```\n\nThe human-readable reporter later prints these values directly:\n\n```python\n\"  * \" + finding[\"message\"] + \" at \" + finding[\"location\"] + \"\\n    \" + _format_code_line_for_output(finding[\"code\"])\n```\n\nNo escaping is applied for control characters such as `\\x1b`. A malicious package can therefore ship a filename like:\n\n```text\nevil\\x1b[2J.py\n```\n\nor matched source lines containing terminal escapes, which survive into the final CLI output.\n\n# Reproduction summary\n1. Create a file whose name contains `\\x1b[2J`.\n2. Feed a semgrep-style result referencing that file into `Analyzer._format_semgrep_response()`.\n3. Render the result with `HumanReadableReporter.print_scan_results()`.\n4. The output string contains the raw escape bytes, which a terminal may interpret.\n\n# Key code paths\n- `guarddog/analyzer/analyzer.py:377-392`\n- `guarddog/reporters/human_readable.py:36-42`\n- `guarddog/reporters/human_readable.py:84-91`\n\n# Practical impact\nThis can be used to:\n- clear or rewrite analyst terminal output\n- inject misleading or spoofed log content in CI\n- emit clickable OSC 8 hyperlinks or title changes in compatible terminals\n\n# Prior public disclosure check\nAs of 2026-03-18, no matching public GitHub advisory, CVE, or public repo issue was found for this specific bug.\n\n# Suggested fix\nEscape or strip terminal control characters before rendering any attacker-controlled value in human-readable output. This should cover package names, file paths, messages, and code snippets.",
  "id": "GHSA-m5p4-gvpx-4mvr",
  "modified": "2026-06-08T23:42:18Z",
  "published": "2026-05-11T14:43:43Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/DataDog/guarddog/security/advisories/GHSA-m5p4-gvpx-4mvr"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-44972"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/DataDog/guarddog"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "GuardDog: Unsanitized human-readable scan output allows terminal escape injection from malicious package content"
}

PYSEC-2026-2506

Vulnerability from pysec - Published: 2026-07-13 15:15 - Updated: 2026-07-13 16:04

Details

Summary

Description

The finding formatter stores file paths and snippets from scanned content:

location = file_path + ":" + str(start_line)
finding = {
    "location": location,
    "code": code,
    "message": result["extra"]["message"],
}

The human-readable reporter later prints these values directly:

"  * " + finding["message"] + " at " + finding["location"] + "\n    " + _format_code_line_for_output(finding["code"])

No escaping is applied for control characters such as \x1b. A malicious package can therefore ship a filename like:

evil\x1b[2J.py

or matched source lines containing terminal escapes, which survive into the final CLI output.

Reproduction summary

Create a file whose name contains \x1b[2J.
Feed a semgrep-style result referencing that file into Analyzer._format_semgrep_response().
Render the result with HumanReadableReporter.print_scan_results().
The output string contains the raw escape bytes, which a terminal may interpret.

Key code paths

guarddog/analyzer/analyzer.py:377-392
guarddog/reporters/human_readable.py:36-42
guarddog/reporters/human_readable.py:84-91

Practical impact

This can be used to: - clear or rewrite analyst terminal output - inject misleading or spoofed log content in CI - emit clickable OSC 8 hyperlinks or title changes in compatible terminals

Prior public disclosure check

As of 2026-03-18, no matching public GitHub advisory, CVE, or public repo issue was found for this specific bug.

Suggested fix

Escape or strip terminal control characters before rendering any attacker-controlled value in human-readable output. This should cover package names, file paths, messages, and code snippets.

Severity

5.0 (Medium)


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

Impacted products

Name	purl
guarddog	pkg:pypi/guarddog

Aliases

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "guarddog",
        "purl": "pkg:pypi/guarddog"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "2.6.0"
            },
            {
              "last_affected": "2.9.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.6.0",
        "2.7.0",
        "2.7.1",
        "2.8.4",
        "2.9.0"
      ]
    }
  ],
  "aliases": [
    "CVE-2026-44972",
    "GHSA-m5p4-gvpx-4mvr"
  ],
  "details": "# Summary\nGuardDog includes attacker-controlled filenames, file locations, messages, and code snippets in its default human-readable output without escaping terminal control characters. A malicious package can therefore inject ANSI or OSC escape sequences into analyst terminals or CI logs.\n\n# Description\nThe finding formatter stores file paths and snippets from scanned content:\n\n```python\nlocation = file_path + \":\" + str(start_line)\nfinding = {\n    \"location\": location,\n    \"code\": code,\n    \"message\": result[\"extra\"][\"message\"],\n}\n```\n\nThe human-readable reporter later prints these values directly:\n\n```python\n\"  * \" + finding[\"message\"] + \" at \" + finding[\"location\"] + \"\\n    \" + _format_code_line_for_output(finding[\"code\"])\n```\n\nNo escaping is applied for control characters such as `\\x1b`. A malicious package can therefore ship a filename like:\n\n```text\nevil\\x1b[2J.py\n```\n\nor matched source lines containing terminal escapes, which survive into the final CLI output.\n\n# Reproduction summary\n1. Create a file whose name contains `\\x1b[2J`.\n2. Feed a semgrep-style result referencing that file into `Analyzer._format_semgrep_response()`.\n3. Render the result with `HumanReadableReporter.print_scan_results()`.\n4. The output string contains the raw escape bytes, which a terminal may interpret.\n\n# Key code paths\n- `guarddog/analyzer/analyzer.py:377-392`\n- `guarddog/reporters/human_readable.py:36-42`\n- `guarddog/reporters/human_readable.py:84-91`\n\n# Practical impact\nThis can be used to:\n- clear or rewrite analyst terminal output\n- inject misleading or spoofed log content in CI\n- emit clickable OSC 8 hyperlinks or title changes in compatible terminals\n\n# Prior public disclosure check\nAs of 2026-03-18, no matching public GitHub advisory, CVE, or public repo issue was found for this specific bug.\n\n# Suggested fix\nEscape or strip terminal control characters before rendering any attacker-controlled value in human-readable output. This should cover package names, file paths, messages, and code snippets.",
  "id": "PYSEC-2026-2506",
  "modified": "2026-07-13T16:04:14.615076Z",
  "published": "2026-07-13T15:15:44.270436Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/DataDog/guarddog/security/advisories/GHSA-m5p4-gvpx-4mvr"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-44972"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/DataDog/guarddog"
    },
    {
      "type": "PACKAGE",
      "url": "https://pypi.org/project/guarddog"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/advisories/GHSA-m5p4-gvpx-4mvr"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "GuardDog: Unsanitized human-readable scan output allows terminal escape injection from malicious package content"
}

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.

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.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

CVE-2026-44972 (GCVE-0-2026-44972)

EUVD-2026-322077

FKIE_CVE-2026-44972

GHSA-M5P4-GVPX-4MVR

Summary

Description

Reproduction summary

Key code paths

Practical impact

Prior public disclosure check

Suggested fix

PYSEC-2026-2506

Summary

Description

Reproduction summary

Key code paths

Practical impact

Prior public disclosure check

Suggested fix

Tags

Sightings

Nomenclature

Related by attack behaviour