Vulnerability-Lookup

CVE-2026-78187 (GCVE-0-2026-78187)

Vulnerability from cvelistv5 – Published: 2026-08-24 04:30 – Updated: 2026-08-24 16:36 X_Open Source

Title

Piwigo Public Authentication cross site scripting

Summary

A vulnerability has been found in Piwigo 16.3.0. This impacts an unknown function of the component Public Authentication Page. Such manipulation of the argument lang leads to cross site scripting. The attack may be performed from remote. A high complexity level is associated with this attack. The exploitability is said to be difficult. The exploit has been disclosed to the public and may be used. Upgrading to version 16.4.0 will fix this issue. The name of the patch is 5277a7dee4b8f1a174f1d69e1e2a4e1c82a3fc9e. It is recommended to upgrade the affected component.

Severity

2.3 (Low)


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

3.1 (Low)


                        
                          CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N/E:P/RL:O/RC:C

3.1 (Low)


                        
                          CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N/E:P/RL:O/RC:C

SSVC

Exploitation: poc Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-08-24 16:36 UTC

CWE

CWE-79 - Cross Site Scripting
CWE-94 - Code Injection

Assigner

VulDB mitre root

References

9 references

URL	Tags
https://vuldb.com/vuln/394569	vdb-entrytechnical-description
https://vuldb.com/vuln/394569/cti	signaturepermissions-required
https://vuldb.com/cve/CVE-2026-78187	third-party-advisory
https://vuldb.com/submit/885228	third-party-advisory
https://github.com/Piwigo/Piwigo/security/advisor…	related
https://github.com/Leousum/VulnPoC/blob/main/Piwi…	exploit
https://github.com/Piwigo/Piwigo/commit/5277a7dee…	patch
https://github.com/Piwigo/Piwigo/releases/tag/16.4.0	patch
https://github.com/Piwigo/Piwigo/	product

Impacted products

1 product

Vendor	Product	Version	CPE status
n/a	Piwigo	Affected: 16.3.0 Unaffected: 16.4.0 cpe:2.3:a:piwigo:piwigo::::::::

Credits

Leousum (VulDB User)

Show details on NVD website

JSON

To clipboard

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                "id": "CVE-2026-78187",
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    "dateReserved": "2026-08-23T16:57:37.940Z",
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    "state": "PUBLISHED"
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}

FKIE_CVE-2026-78187

Vulnerability from fkie_nvd - Published: 2026-08-24 05:16 - Updated: 2026-08-24 17:18

Severity

3.1 (Low) - CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N

Summary

References

	URL	Tags
	cna@vuldb.com	https://github.com/Leousum/VulnPoC/blob/main/Piwigo%2016.3.0/reflected_XSS.md
	cna@vuldb.com	https://github.com/Piwigo/Piwigo/
	cna@vuldb.com	https://github.com/Piwigo/Piwigo/commit/5277a7dee4b8f1a174f1d69e1e2a4e1c82a3fc9e
	cna@vuldb.com	https://github.com/Piwigo/Piwigo/releases/tag/16.4.0
	cna@vuldb.com	https://github.com/Piwigo/Piwigo/security/advisories/GHSA-rr39-mf4j-6594
	cna@vuldb.com	https://vuldb.com/cve/CVE-2026-78187
	cna@vuldb.com	https://vuldb.com/submit/885228
	cna@vuldb.com	https://vuldb.com/vuln/394569
	cna@vuldb.com	https://vuldb.com/vuln/394569/cti

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "cpes": [
            "cpe:2.3:a:piwigo:piwigo:*:*:*:*:*:*:*:*"
          ],
          "modules": [
            "Public Authentication Page"
          ],
          "product": "Piwigo",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "16.3.0"
            },
            {
              "status": "unaffected",
              "version": "16.4.0"
            }
          ]
        }
      ],
      "source": "cna@vuldb.com"
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  ],
  "cveTags": [],
  "descriptions": [
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      "lang": "en",
      "value": "A vulnerability has been found in Piwigo 16.3.0. This impacts an unknown function of the component Public Authentication Page. Such manipulation of the argument lang leads to cross site scripting. The attack may be performed from remote. A high complexity level is associated with this attack. The exploitability is said to be difficult. The exploit has been disclosed to the public and may be used. Upgrading to version 16.4.0 will fix this issue. The name of the patch is 5277a7dee4b8f1a174f1d69e1e2a4e1c82a3fc9e. It is recommended to upgrade the affected component."
    }
  ],
  "id": "CVE-2026-78187",
  "lastModified": "2026-08-24T17:18:18.887",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "LOW",
        "cvssData": {
          "accessComplexity": "HIGH",
          "accessVector": "NETWORK",
          "authentication": "NONE",
          "availabilityImpact": "NONE",
          "baseScore": 2.6,
          "confidentialityImpact": "NONE",
          "integrityImpact": "PARTIAL",
          "vectorString": "AV:N/AC:H/Au:N/C:N/I:P/A:N",
          "version": "2.0"
        },
        "exploitabilityScore": 4.9,
        "impactScore": 2.9,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "cna@vuldb.com",
        "type": "Secondary",
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "HIGH",
          "attackVector": "NETWORK",
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          "baseScore": 3.1,
          "baseSeverity": "LOW",
          "confidentialityImpact": "NONE",
          "integrityImpact": "LOW",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 1.6,
        "impactScore": 1.4,
        "source": "cna@vuldb.com",
        "type": "Secondary"
      }
    ],
    "cvssMetricV40": [
      {
        "cvssData": {
          "Automatable": "NOT_DEFINED",
          "Recovery": "NOT_DEFINED",
          "Safety": "NOT_DEFINED",
          "attackComplexity": "HIGH",
          "attackRequirements": "NONE",
          "attackVector": "NETWORK",
          "availabilityRequirement": "NOT_DEFINED",
          "baseScore": 1.3,
          "baseSeverity": "LOW",
          "confidentialityRequirement": "NOT_DEFINED",
          "exploitMaturity": "PROOF_OF_CONCEPT",
          "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": "NONE",
          "subIntegrityImpact": "NONE",
          "userInteraction": "PASSIVE",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P/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": "NONE",
          "vulnIntegrityImpact": "LOW",
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        "source": "cna@vuldb.com",
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      }
    ],
    "ssvcV203": [
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          "options": [
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            },
            {
              "automatable": "no"
            },
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            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-08-24T16:36:07.115960Z",
          "version": "2.0.3"
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    ]
  },
  "published": "2026-08-24T05:16:55.507",
  "references": [
    {
      "source": "cna@vuldb.com",
      "url": "https://github.com/Leousum/VulnPoC/blob/main/Piwigo%2016.3.0/reflected_XSS.md"
    },
    {
      "source": "cna@vuldb.com",
      "url": "https://github.com/Piwigo/Piwigo/"
    },
    {
      "source": "cna@vuldb.com",
      "url": "https://github.com/Piwigo/Piwigo/commit/5277a7dee4b8f1a174f1d69e1e2a4e1c82a3fc9e"
    },
    {
      "source": "cna@vuldb.com",
      "url": "https://github.com/Piwigo/Piwigo/releases/tag/16.4.0"
    },
    {
      "source": "cna@vuldb.com",
      "url": "https://github.com/Piwigo/Piwigo/security/advisories/GHSA-rr39-mf4j-6594"
    },
    {
      "source": "cna@vuldb.com",
      "url": "https://vuldb.com/cve/CVE-2026-78187"
    },
    {
      "source": "cna@vuldb.com",
      "url": "https://vuldb.com/submit/885228"
    },
    {
      "source": "cna@vuldb.com",
      "url": "https://vuldb.com/vuln/394569"
    },
    {
      "source": "cna@vuldb.com",
      "url": "https://vuldb.com/vuln/394569/cti"
    }
  ],
  "sourceIdentifier": "cna@vuldb.com",
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-79"
        },
        {
          "lang": "en",
          "value": "CWE-94"
        }
      ],
      "source": "cna@vuldb.com",
      "type": "Secondary"
    }
  ]
}

GHSA-P4VH-HFQQ-9PRQ

Vulnerability from github – Published: 2026-08-24 06:30 – Updated: 2026-08-24 06:30

Details

Severity

3.1 (Low)


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

1.3 (Low)


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

Show details on source website

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{
  "affected": [],
  "aliases": [
    "CVE-2026-78187"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-79"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-08-24T05:16:55Z",
    "severity": "LOW"
  },
  "details": "A vulnerability has been found in Piwigo 16.3.0. This impacts an unknown function of the component Public Authentication Page. Such manipulation of the argument lang leads to cross site scripting. The attack may be performed from remote. A high complexity level is associated with this attack. The exploitability is said to be difficult. The exploit has been disclosed to the public and may be used. Upgrading to version 16.4.0 will fix this issue. The name of the patch is 5277a7dee4b8f1a174f1d69e1e2a4e1c82a3fc9e. It is recommended to upgrade the affected component.",
  "id": "GHSA-p4vh-hfqq-9prq",
  "modified": "2026-08-24T06:30:29Z",
  "published": "2026-08-24T06:30:29Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/Piwigo/Piwigo/security/advisories/GHSA-rr39-mf4j-6594"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-78187"
    },
    {
      "type": "WEB",
      "url": "https://github.com/Piwigo/Piwigo/commit/5277a7dee4b8f1a174f1d69e1e2a4e1c82a3fc9e"
    },
    {
      "type": "WEB",
      "url": "https://github.com/Leousum/VulnPoC/blob/main/Piwigo%2016.3.0/reflected_XSS.md"
    },
    {
      "type": "WEB",
      "url": "https://github.com/Piwigo/Piwigo"
    },
    {
      "type": "WEB",
      "url": "https://github.com/Piwigo/Piwigo/releases/tag/16.4.0"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/cve/CVE-2026-78187"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/submit/885228"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/vuln/394569"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/vuln/394569/cti"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P/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"
    }
  ]
}

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

CVE-2026-78187 (GCVE-0-2026-78187)

FKIE_CVE-2026-78187

GHSA-P4VH-HFQQ-9PRQ

Tags

Sightings

Nomenclature