Vulnerability-Lookup

GHSA-Q6JF-93CP-9XWF

Vulnerability from github – Published: 2026-07-29 12:31 – Updated: 2026-07-29 12:31

Details

An attacker can embed malicious control sequences in filenames, diff metadata, or file content that are rendered directly in the terminal during diff viewing. This can lead to output manipulation, including filename spoofing, terminal screen clearing, and clipboard injection via supported escape sequences.

Successful exploitation may mislead users during code review, alter terminal state, or result in unintended command execution through clipboard hijacking.

This issue has been fixed in the commit 9c81294

Severity

4.8 (Medium)


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

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{
  "affected": [],
  "aliases": [
    "CVE-2026-50642"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-116"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-07-29T11:16:49Z",
    "severity": "MODERATE"
  },
  "details": "diff\u2011so\u2011fancy does not properly sanitize non\u2011SGR terminal control sequences before outputting diff data. The application only strips ANSI SGR sequences while allowing other control characters, including carriage return (\\r) and escape sequences (e.g., OSC, CSI), to pass through unsanitized.\n\nAn attacker can embed malicious control sequences in filenames, diff metadata, or file content that are rendered directly in the terminal during diff viewing. This can lead to output manipulation, including filename spoofing, terminal screen clearing, and clipboard injection via supported escape sequences.\n\nSuccessful exploitation may mislead users during code review, alter terminal state, or result in unintended command execution through clipboard hijacking.\n\nThis issue has been fixed in the commit\u00a09c81294",
  "id": "GHSA-q6jf-93cp-9xwf",
  "modified": "2026-07-29T12:31:23Z",
  "published": "2026-07-29T12:31:23Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-50642"
    },
    {
      "type": "WEB",
      "url": "https://cert.pl/posts/2026/07/CVE-2026-41874"
    },
    {
      "type": "WEB",
      "url": "https://github.com/so-fancy/diff-so-fancy"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/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-2026-50642 (GCVE-0-2026-50642)

Vulnerability from cvelistv5 – Published: 2026-07-29 09:46 – Updated: 2026-07-29 12:13 X_Open Source

Title

Terminal Escape Injection in diff‑so‑fancy

Summary

diff‑so‑fancy does not properly sanitize non‑SGR terminal control sequences before outputting diff data. The application only strips ANSI SGR sequences while allowing other control characters, including carriage return (\r) and escape sequences (e.g., OSC, CSI), to pass through unsanitized. An attacker can embed malicious control sequences in filenames, diff metadata, or file content that are rendered directly in the terminal during diff viewing. This can lead to output manipulation, including filename spoofing, terminal screen clearing, and clipboard injection via supported escape sequences. Successful exploitation may mislead users during code review, alter terminal state, or result in unintended command execution through clipboard hijacking. This issue has been fixed in the commit 9c81294

Severity

4.8 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

CWE-116 - Improper Encoding or Escaping of Output

Assigner

CERT-PL

References

2 references

URL	Tags
https://cert.pl/posts/2026/07/CVE-2026-41874/	third-party-advisory
https://github.com/so-fancy/diff-so-fancy	product

Impacted products

1 product

Vendor	Product	Version
so-fancy	diff-so-fancy	Affected: 0 , ≤ 1.4.10 (semver)

Credits

Michał Majchrowicz (AFINE Team) Marcin Wyczechowski (AFINE Team)

Show details on NVD website

JSON

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{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-50642",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-07-29T12:13:35.752261Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-07-29T12:13:51.709Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "diff-so-fancy",
          "repo": "https://github.com/so-fancy/diff-so-fancy",
          "vendor": "so-fancy",
          "versions": [
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              "lessThanOrEqual": "1.4.10",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "Micha\u0142 Majchrowicz (AFINE Team)"
        },
        {
          "lang": "en",
          "type": "finder",
          "value": "Marcin Wyczechowski (AFINE Team)"
        }
      ],
      "descriptions": [
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      "metrics": [
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            "subConfidentialityImpact": "NONE",
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            "valueDensity": "NOT_DEFINED",
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            "vulnAvailabilityImpact": "LOW",
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            "vulnerabilityResponseEffort": "NOT_DEFINED"
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          "tags": [
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          "url": "https://github.com/so-fancy/diff-so-fancy"
        }
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    "dateReserved": "2026-06-05T13:27:10.270Z",
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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.

Action not permitted

GHSA-Q6JF-93CP-9XWF

CVE-2026-50642 (GCVE-0-2026-50642)

Tags

Sightings

Nomenclature