CVE-2026-75107

Grav Form Plugin before 9.1.19 fails to escape field-definition properties including prepend, append, spacer text, section text, and select option labels in form templates. Attackers with form authoring privileges can inject arbitrary HTML and JavaScript that executes for all form visitors through unescaped |raw filters and unquoted attributes.

CVSS v3 5.4 MEDIUM

5.4^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.3 / Impact : 2.7

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction REQUIRED

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact NONE

Scope CHANGED

References

Link	Resource
https://github.com/getgrav/grav/security/advisories/GHSA-5jrr-wfgh-mhg9
https://www.vulncheck.com/advisories/grav-form-plugin-before-stored-xss-via-field-properties
https://github.com/getgrav/grav/security/advisories/GHSA-5jrr-wfgh-mhg9

Configurations

No configuration.

History

No history.

Information

Published : 2026-08-18 12:19

Updated : 2026-09-08 20:32

NVD link : CVE-2026-75107

Mitre link : CVE-2026-75107

CVE.ORG link : CVE-2026-75107

JSON object : View

Products Affected

No product.

CWE

CWE-79

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

{"id": "CVE-2026-75107", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-75107", "role": "CISA Coordinator", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-08-18T14:14:16.122505Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "disclosure@vulncheck.com", "cvssData": {"scope": "CHANGED", "version": "3.1", "baseScore": 5.4, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N", "integrityImpact": "LOW", "userInteraction": "REQUIRED", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "LOW", "confidentialityImpact": "LOW"}, "impactScore": 2.7, "exploitabilityScore": 2.3}], "cvssMetricV40": [{"type": "Secondary", "source": "disclosure@vulncheck.com", "cvssData": {"Safety": "NOT_DEFINED", "version": "4.0", "Recovery": "NOT_DEFINED", "baseScore": 5.1, "Automatable": "NOT_DEFINED", "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "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", "exploitMaturity": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "userInteraction": "PASSIVE", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "LOW", "subIntegrityImpact": "LOW", "vulnIntegrityImpact": "LOW", "integrityRequirement": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "vulnAvailabilityImpact": "NONE", "availabilityRequirement": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "subConfidentialityImpact": "LOW", "vulnConfidentialityImpact": "LOW", "confidentialityRequirement": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED"}}]}, "affected": [{"source": "disclosure@vulncheck.com", "affectedData": [{"vendor": "getgrav", "product": "grav", "versions": [{"status": "affected", "version": "0", "lessThan": "9.1.19", "versionType": "semver"}, {"status": "unaffected", "version": "9.1.19", "versionType": "semver"}], "defaultStatus": "unaffected"}]}], "published": "2026-08-18T12:19:31.593", "references": [{"url": "https://github.com/getgrav/grav/security/advisories/GHSA-5jrr-wfgh-mhg9", "source": "disclosure@vulncheck.com"}, {"url": "https://www.vulncheck.com/advisories/grav-form-plugin-before-stored-xss-via-field-properties", "source": "disclosure@vulncheck.com"}, {"url": "https://github.com/getgrav/grav/security/advisories/GHSA-5jrr-wfgh-mhg9", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"}], "vulnStatus": "Deferred", "weaknesses": [{"type": "Secondary", "source": "disclosure@vulncheck.com", "description": [{"lang": "en", "value": "CWE-79"}]}], "descriptions": [{"lang": "en", "value": "Grav Form Plugin before 9.1.19 fails to escape field-definition properties including prepend, append, spacer text, section text, and select option labels in form templates. Attackers with form authoring privileges can inject arbitrary HTML and JavaScript that executes for all form visitors through unescaped |raw filters and unquoted attributes."}], "lastModified": "2026-09-08T20:32:39.347", "sourceIdentifier": "disclosure@vulncheck.com"}