Vulnerability-Lookup

CVE-2026-27473 (GCVE-0-2026-27473)

Vulnerability from cvelistv5 – Published: 2026-02-19 18:38 – Updated: 2026-03-05 01:31

Title

SPIP < 4.4.9 Stored Cross-Site Scripting via Syndicated Sites

Summary

SPIP before 4.4.9 allows Stored Cross-Site Scripting (XSS) via syndicated sites in the private area. The #URL_SYNDIC output is not properly sanitized on the private syndicated site page, allowing an attacker who can set a malicious syndication URL to inject persistent scripts that execute when other administrators view the syndicated site details.

Severity

5.1 (Medium)


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

6.4 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:L/UI:N/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 2026-02-20 20:08 UTC

CWE

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Assigner

VulnCheck mitre root

References

3 references

URL	Tags
https://blog.spip.net/Mise-a-jour-de-securite-sor…	vendor-advisorypatch
https://git.spip.net/spip/spip	product
https://www.vulncheck.com/advisories/spip-stored-…	third-party-advisory

Impacted products

1 product

Vendor	Product	Version	CPE status
SPIP	SPIP	Affected: 4.4.0 , < 4.4.9 (semver) cpe:2.3:a:spip:spip::::::::

Date Public

2026-02-18 00:00

Credits

Dorian Piette (Trachinus)

Show details on NVD website

JSON

To clipboard

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}

CERTFR-2026-AVI-0179

Vulnerability from certfr_avis - Published: 2026-02-18 - Updated: 2026-02-25

De multiples vulnérabilités ont été découvertes dans SPIP. Certaines d'entre elles permettent à un attaquant de provoquer une falsification de requêtes côté serveur (SSRF), une injection de code indirecte à distance (XSS) et un problème de sécurité non spécifié par l'éditeur.

Solutions

Se référer au bulletin de sécurité de l'éditeur pour l'obtention des correctifs (cf. section Documentation).

Impacted products

	Vendor	Product	Description
	SPIP	SPIP	SPIP versions 4.4.x antérieures à 4.4.9

References

Title

Publication Time

FKIE_CVE-2026-27473

Vulnerability from fkie_nvd - Published: 2026-02-19 19:22 - Updated: 2026-06-17 10:27

Severity

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

Summary

References

URL	Tags
disclosure@vulncheck.com	https://blog.spip.net/Mise-a-jour-de-securite-sortie-de-SPIP-4-4-9.html	Release Notes, Vendor Advisory
disclosure@vulncheck.com	https://git.spip.net/spip/spip	Product
disclosure@vulncheck.com	https://www.vulncheck.com/advisories/spip-stored-cross-site-scripting-via-syndicated-sites	Third Party Advisory

Impacted products

	Vendor	Product	Version
	spip	spip	*

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "SPIP",
          "vendor": "SPIP",
          "versions": [
            {
              "lessThan": "4.4.9",
              "status": "affected",
              "version": "4.4.0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "source": "disclosure@vulncheck.com"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:spip:spip:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "1590B61F-3E4B-4634-849E-E46C8BD6AA93",
              "versionEndExcluding": "4.4.9",
              "versionStartIncluding": "4.4.0",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "SPIP before 4.4.9 allows Stored Cross-Site Scripting (XSS) via syndicated sites in the private area. The #URL_SYNDIC output is not properly sanitized on the private syndicated site page, allowing an attacker who can set a malicious syndication URL to inject persistent scripts that execute when other administrators view the syndicated site details."
    },
    {
      "lang": "es",
      "value": "SPIP anterior a 4.4.9 permite Cross-Site Scripting Almacenado (XSS) a trav\u00e9s de sitios sindicados en el \u00e1rea privada. La salida #URL_SYNDIC no se sanea correctamente en la p\u00e1gina privada del sitio sindicado, permitiendo a un atacante que puede establecer una URL de sindicaci\u00f3n maliciosa inyectar scripts persistentes que se ejecutan cuando otros administradores ven los detalles del sitio sindicado."
    }
  ],
  "id": "CVE-2026-27473",
  "lastModified": "2026-06-17T10:27:12.777",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 6.4,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "LOW",
          "integrityImpact": "LOW",
          "privilegesRequired": "LOW",
          "scope": "CHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 3.1,
        "impactScore": 2.7,
        "source": "disclosure@vulncheck.com",
        "type": "Secondary"
      }
    ],
    "cvssMetricV40": [
      {
        "cvssData": {
          "Automatable": "NOT_DEFINED",
          "Recovery": "NOT_DEFINED",
          "Safety": "NOT_DEFINED",
          "attackComplexity": "LOW",
          "attackRequirements": "NONE",
          "attackVector": "NETWORK",
          "availabilityRequirement": "NOT_DEFINED",
          "baseScore": 5.1,
          "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": "LOW",
          "providerUrgency": "NOT_DEFINED",
          "subAvailabilityImpact": "NONE",
          "subConfidentialityImpact": "LOW",
          "subIntegrityImpact": "LOW",
          "userInteraction": "PASSIVE",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/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",
          "version": "4.0",
          "vulnAvailabilityImpact": "NONE",
          "vulnConfidentialityImpact": "LOW",
          "vulnIntegrityImpact": "LOW",
          "vulnerabilityResponseEffort": "NOT_DEFINED"
        },
        "source": "disclosure@vulncheck.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-27473",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-02-20T20:08:24.969447Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-02-19T19:22:30.363",
  "references": [
    {
      "source": "disclosure@vulncheck.com",
      "tags": [
        "Release Notes",
        "Vendor Advisory"
      ],
      "url": "https://blog.spip.net/Mise-a-jour-de-securite-sortie-de-SPIP-4-4-9.html"
    },
    {
      "source": "disclosure@vulncheck.com",
      "tags": [
        "Product"
      ],
      "url": "https://git.spip.net/spip/spip"
    },
    {
      "source": "disclosure@vulncheck.com",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://www.vulncheck.com/advisories/spip-stored-cross-site-scripting-via-syndicated-sites"
    }
  ],
  "sourceIdentifier": "disclosure@vulncheck.com",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-79"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}

GHSA-FGJ6-7F58-836M

Vulnerability from github – Published: 2026-02-19 21:30 – Updated: 2026-02-19 21:30

Details

Severity

6.4 (Medium)


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

5.1 (Medium)


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

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-27473"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-79"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-02-19T19:22:30Z",
    "severity": "MODERATE"
  },
  "details": "SPIP before 4.4.9 allows Stored Cross-Site Scripting (XSS) via syndicated sites in the private area. The #URL_SYNDIC output is not properly sanitized on the private syndicated site page, allowing an attacker who can set a malicious syndication URL to inject persistent scripts that execute when other administrators view the syndicated site details.",
  "id": "GHSA-fgj6-7f58-836m",
  "modified": "2026-02-19T21:30:47Z",
  "published": "2026-02-19T21:30:47Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-27473"
    },
    {
      "type": "WEB",
      "url": "https://blog.spip.net/Mise-a-jour-de-securite-sortie-de-SPIP-4-4-9.html"
    },
    {
      "type": "WEB",
      "url": "https://git.spip.net/spip/spip"
    },
    {
      "type": "WEB",
      "url": "https://www.vulncheck.com/advisories/spip-stored-cross-site-scripting-via-syndicated-sites"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/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"
    }
  ]
}

UBUNTU-CVE-2026-27473 (CVE-2026-27473)

Vulnerability from osv_ubuntu – Published: 2026-02-19 19:22 – Updated: 2026-05-20 15:26 – Source website

Details

Severity

6.4 (Medium)


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

5.1 (Medium)


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

N/A (UNKNOWN)


                    
                      medium

References

URL

Type

	https://ubuntu.com/security/CVE-2026-27473	REPORT
	https://www.cve.org/CVERecord?id=CVE-2026-27473	REPORT
	https://blog.spip.net/Mise-a-jour-de-securite-sor…	REPORT
	https://git.spip.net/spip/spip	REPORT
	https://www.vulncheck.com/advisories/spip-stored-…	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "spip",
            "binary_version": "3.0.21-1ubuntu1+esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:16.04:LTS",
        "name": "spip",
        "purl": "pkg:deb/ubuntu/spip@3.0.21-1ubuntu1+esm1?arch=source\u0026distro=esm-apps/xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "3.0.20-1",
        "3.0.21-1",
        "3.0.21-1ubuntu1",
        "3.0.21-1ubuntu1+esm1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "spip",
            "binary_version": "3.1.4-4~deb9u5ubuntu0.1~esm2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:18.04:LTS",
        "name": "spip",
        "purl": "pkg:deb/ubuntu/spip@3.1.4-4~deb9u5ubuntu0.1~esm2?arch=source\u0026distro=esm-apps/bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "3.1.4-3",
        "3.1.4-4~deb9u3build0.18.04.1",
        "3.1.4-4~deb9u5build0.18.04.1",
        "3.1.4-4~deb9u5ubuntu0.1~esm2"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "spip",
            "binary_version": "3.2.7-1ubuntu0.1+esm2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:20.04:LTS",
        "name": "spip",
        "purl": "pkg:deb/ubuntu/spip@3.2.7-1ubuntu0.1+esm2?arch=source\u0026distro=esm-apps/focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "3.2.4-1",
        "3.2.5-1",
        "3.2.7-1",
        "3.2.7-1ubuntu0.1",
        "3.2.7-1ubuntu0.1+esm2"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "spip",
            "binary_version": "4.0.4-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:22.04:LTS",
        "name": "spip",
        "purl": "pkg:deb/ubuntu/spip@4.0.4-1?arch=source\u0026distro=jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "3.2.11-3",
        "3.2.12-1",
        "4.0.2-1",
        "4.0.4-1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "spip",
            "binary_version": "4.2.9+dfsg-2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:24.04:LTS",
        "name": "spip",
        "purl": "pkg:deb/ubuntu/spip@4.2.9+dfsg-2?arch=source\u0026distro=noble"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "4.1.11+dfsg-1",
        "4.1.12+dfsg-1",
        "4.1.13+dfsg-1",
        "4.1.15+dfsg-1",
        "4.2.9+dfsg-2"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "spip",
            "binary_version": "4.4.3+dfsg-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:25.10",
        "name": "spip",
        "purl": "pkg:deb/ubuntu/spip@4.4.3+dfsg-1?arch=source\u0026distro=questing"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "4.3.8+dfsg-1",
        "4.4.3+dfsg-1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "spip",
            "binary_version": "4.4.9+dfsg-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.04:LTS",
        "name": "spip",
        "purl": "pkg:deb/ubuntu/spip@4.4.9+dfsg-1?arch=source\u0026distro=resolute"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "4.4.3+dfsg-1",
        "4.4.6+dfsg-1",
        "4.4.7+dfsg-1",
        "4.4.8+dfsg-1",
        "4.4.9+dfsg-1"
      ]
    }
  ],
  "aliases": [],
  "details": "SPIP before 4.4.9 allows Stored Cross-Site Scripting (XSS) via syndicated sites in the private area. The #URL_SYNDIC output is not properly sanitized on the private syndicated site page, allowing an attacker who can set a malicious syndication URL to inject persistent scripts that execute when other administrators view the syndicated site details.",
  "id": "UBUNTU-CVE-2026-27473",
  "modified": "2026-05-20T15:26:07Z",
  "published": "2026-02-19T19:22:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-27473"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-27473"
    },
    {
      "type": "REPORT",
      "url": "https://blog.spip.net/Mise-a-jour-de-securite-sortie-de-SPIP-4-4-9.html"
    },
    {
      "type": "REPORT",
      "url": "https://git.spip.net/spip/spip"
    },
    {
      "type": "REPORT",
      "url": "https://www.vulncheck.com/advisories/spip-stored-cross-site-scripting-via-syndicated-sites"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N",
      "type": "CVSS_V4"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2026-27473"
  ]
}

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.
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-2026-27473 (GCVE-0-2026-27473)

CERTFR-2026-AVI-0179

Solutions

FKIE_CVE-2026-27473

GHSA-FGJ6-7F58-836M

UBUNTU-CVE-2026-27473 (CVE-2026-27473)

Tags

Sightings

Nomenclature

Related by attack behaviour