Vulnerability-Lookup

CVE-2026-46683 (GCVE-0-2026-46683)

Vulnerability from cvelistv5 – Published: 2026-06-10 19:53 – Updated: 2026-06-11 14:06

Title

Snappy: SSRF and local file read via the xsl-style-sheet option

Summary

Snappy is a PHP library allowing thumbnail, snapshot or PDF generation from a url or a html page. Prior to version 1.7.0, there is a SSRF and local file read vulnerability via the xsl-style-sheet option. This issue has been patched in version 1.7.0.

Severity

6.9 (Medium)


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

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

CWE-918 - Server-Side Request Forgery (SSRF)

Assigner

GitHub_M

References

2 references

URL	Tags
https://github.com/KnpLabs/snappy/security/adviso…	x_refsource_CONFIRM
https://github.com/KnpLabs/snappy/releases/tag/v1.7.0	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
KnpLabs	snappy	Affected: < 1.7.0

Show details on NVD website

JSON

To clipboard

{
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                "id": "CVE-2026-46683",
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                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-06-11T14:05:06.327704Z",
                "version": "2.0.3"
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          "vendor": "KnpLabs",
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        }
      ],
      "metrics": [
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          "cvssV4_0": {
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "baseScore": 6.9,
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            "privilegesRequired": "NONE",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "LOW",
            "subIntegrityImpact": "LOW",
            "userInteraction": "NONE",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:L/SI:L/SA:N",
            "version": "4.0",
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          ],
          "url": "https://github.com/KnpLabs/snappy/security/advisories/GHSA-c5fp-p67m-gq56"
        },
        {
          "name": "https://github.com/KnpLabs/snappy/releases/tag/v1.7.0",
          "tags": [
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          "url": "https://github.com/KnpLabs/snappy/releases/tag/v1.7.0"
        }
      ],
      "source": {
        "advisory": "GHSA-c5fp-p67m-gq56",
        "discovery": "UNKNOWN"
      },
      "title": "Snappy: SSRF and local file read via the xsl-style-sheet option"
    }
  },
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    "datePublished": "2026-06-10T19:53:09.020Z",
    "dateReserved": "2026-05-15T21:46:51.548Z",
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    "state": "PUBLISHED"
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  }
}

FKIE_CVE-2026-46683

Vulnerability from fkie_nvd - Published: 2026-06-10 20:17 - Updated: 2026-06-10 20:21

Severity

6.9 (Medium) - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:L/SI:L/SA:N

Summary

References

	URL	Tags
	security-advisories@github.com	https://github.com/KnpLabs/snappy/releases/tag/v1.7.0
	security-advisories@github.com	https://github.com/KnpLabs/snappy/security/advisories/GHSA-c5fp-p67m-gq56

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Snappy is a PHP library allowing thumbnail, snapshot or PDF generation from a url or a html page. Prior to version 1.7.0, there is a SSRF and local file read vulnerability via the xsl-style-sheet option. This issue has been patched in version 1.7.0."
    }
  ],
  "id": "CVE-2026-46683",
  "lastModified": "2026-06-10T20:21:20.207",
  "metrics": {
    "cvssMetricV40": [
      {
        "cvssData": {
          "Automatable": "NOT_DEFINED",
          "Recovery": "NOT_DEFINED",
          "Safety": "NOT_DEFINED",
          "attackComplexity": "LOW",
          "attackRequirements": "NONE",
          "attackVector": "NETWORK",
          "availabilityRequirement": "NOT_DEFINED",
          "baseScore": 6.9,
          "baseSeverity": "MEDIUM",
          "confidentialityRequirement": "NOT_DEFINED",
          "exploitMaturity": "NOT_DEFINED",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "privilegesRequired": "NONE",
          "providerUrgency": "NOT_DEFINED",
          "subAvailabilityImpact": "NONE",
          "subConfidentialityImpact": "LOW",
          "subIntegrityImpact": "LOW",
          "userInteraction": "NONE",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/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",
          "version": "4.0",
          "vulnAvailabilityImpact": "NONE",
          "vulnConfidentialityImpact": "LOW",
          "vulnIntegrityImpact": "NONE",
          "vulnerabilityResponseEffort": "NOT_DEFINED"
        },
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ]
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  "published": "2026-06-10T20:17:29.017",
  "references": [
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/KnpLabs/snappy/releases/tag/v1.7.0"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/KnpLabs/snappy/security/advisories/GHSA-c5fp-p67m-gq56"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-918"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Primary"
    }
  ]
}

GHSA-C5FP-P67M-GQ56

Vulnerability from github – Published: 2026-05-21 20:20 – Updated: 2026-06-11 13:30

Summary

Snappy : SSRF and local file read via the xsl-style-sheet option

Details

Impact

It impacts applications where: - the PHP daemon run with root permissions ; - the application is either running outside a container or has sensitive file access ;

It could happens with this kind of workflows:

$stylesheet = $_GET['stylesheet']; // = ‘file:///etc/passwd’
$pdf = new Knp\Snappy\Pdf(‘/usr/local/bin/wkhtmltopdf’);
 $pdf->generate(‘page.html’, ‘out.pdf’, [
   ‘xsl-style-sheet’ => $stylesheet
 ]);

Patches

A list a schema with http and https by default is used to validate the remote path by default.

Workarounds

Developers should ensure usage cannot allow (in any case) a user to pass a free input directly to the Snappy library.

// Bad example
$pdf = new Knp\Snappy\Pdf(‘/usr/local/bin/wkhtmltopdf’);
 $pdf->generate(‘page.html’, ‘out.pdf’, [
   ‘xsl-style-sheet’ => $_GET['input'],
 ]);

Instead developers can list available available stylesheets and pick the right one with the user input.

// Better
$allowedStylesheets = [
    'invoice' => '/app/xsl/invoice.xsl',
    'report'  => '/app/xsl/report.xsl',
];

$key = $_GET['stylesheet'] ?? '';

if (!array_key_exists($key, $allowedStylesheets)) {
    throw new \RuntimeException('Unknown stylesheet.');
}

$pdf = new Knp\Snappy\Pdf('/usr/local/bin/wkhtmltopdf');
$pdf->generate('page.html', 'out.pdf', [
    'xsl-style-sheet' => $allowedStylesheets[$key],
]);

References

Severity

6.9 (Medium)


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

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 1.6.0"
      },
      "package": {
        "ecosystem": "Packagist",
        "name": "knplabs/knp-snappy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.7.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-46683"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-918"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-05-21T20:20:01Z",
    "nvd_published_at": "2026-06-10T20:17:29Z",
    "severity": "MODERATE"
  },
  "details": "### Impact\n\nIt impacts applications where:\n- the PHP daemon run with root permissions ;\n- the application is either running outside a container or has sensitive file access ;\n\nIt could happens with this kind of workflows:\n\n```php\n$stylesheet = $_GET[\u0027stylesheet\u0027]; // = \u2018file:///etc/passwd\u2019\n$pdf = new Knp\\Snappy\\Pdf(\u2018/usr/local/bin/wkhtmltopdf\u2019);\n $pdf-\u003egenerate(\u2018page.html\u2019, \u2018out.pdf\u2019, [\n   \u2018xsl-style-sheet\u2019 =\u003e $stylesheet\n ]);\n```\n\n### Patches\n\nA list a schema with `http` and `https` by default is used to validate the remote path by default.\n\n### Workarounds\n\nDevelopers should ensure usage cannot allow (in any case) a user to pass a free input directly to the Snappy library.\n\n```php\n// Bad example\n$pdf = new Knp\\Snappy\\Pdf(\u2018/usr/local/bin/wkhtmltopdf\u2019);\n $pdf-\u003egenerate(\u2018page.html\u2019, \u2018out.pdf\u2019, [\n   \u2018xsl-style-sheet\u2019 =\u003e $_GET[\u0027input\u0027],\n ]);\n```\n\nInstead developers can list available available stylesheets and pick the right one with the user input.\n\n```php\n// Better\n$allowedStylesheets = [\n    \u0027invoice\u0027 =\u003e \u0027/app/xsl/invoice.xsl\u0027,\n    \u0027report\u0027  =\u003e \u0027/app/xsl/report.xsl\u0027,\n];\n\n$key = $_GET[\u0027stylesheet\u0027] ?? \u0027\u0027;\n\nif (!array_key_exists($key, $allowedStylesheets)) {\n    throw new \\RuntimeException(\u0027Unknown stylesheet.\u0027);\n}\n\n$pdf = new Knp\\Snappy\\Pdf(\u0027/usr/local/bin/wkhtmltopdf\u0027);\n$pdf-\u003egenerate(\u0027page.html\u0027, \u0027out.pdf\u0027, [\n    \u0027xsl-style-sheet\u0027 =\u003e $allowedStylesheets[$key],\n]);\n```\n\n### References\n\nRead more about SSRF at [owasp.org/www-community/attacks/Server_Side_Request_Forgery](https://owasp.org/www-community/attacks/Server_Side_Request_Forgery)",
  "id": "GHSA-c5fp-p67m-gq56",
  "modified": "2026-06-11T13:30:20Z",
  "published": "2026-05-21T20:20:01Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/KnpLabs/snappy/security/advisories/GHSA-c5fp-p67m-gq56"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-46683"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/KnpLabs/snappy"
    },
    {
      "type": "WEB",
      "url": "https://github.com/KnpLabs/snappy/releases/tag/v1.7.0"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:L/SI:L/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Snappy : SSRF and local file read via the xsl-style-sheet option"
}

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.

Action not permitted

CVE-2026-46683 (GCVE-0-2026-46683)

FKIE_CVE-2026-46683

GHSA-C5FP-P67M-GQ56

Impact

Patches

Workarounds

References

Tags

Sightings

Nomenclature