FKIE_CVE-2026-4929
Vulnerability from fkie_nvd - Published: 2026-05-21 22:16 - Updated: 2026-07-23 16:10
Severity
Summary
Simple Hierarchical Select (SHS) for Drupal 7 contains cross-site scripting risk due to improper output escaping of term-derived text. Confirmed affected paths include field formatter output (shs_field_formatter_view) and term-tree child-term data generation (shs_term_get_children). Malicious taxonomy term names can be rendered unsafely depending on output context.
This affects versions from 7.x-1.0 through (and including) 7.x-1.10.
References
| URL | Tags | ||
|---|---|---|---|
| mlhess@drupal.org | https://d7es.tag1.com/security-advisories/simple-hierarchical-select-moderately-critical-cross-site-scripting | Third Party Advisory | |
| mlhess@drupal.org | https://www.herodevs.com/vulnerability-directory/cve-2026-4929 | Exploit, Third Party Advisory | |
| 134c704f-9b21-4f2e-91b3-4a467353bcc0 | https://www.herodevs.com/vulnerability-directory/cve-2026-4929?nes-for-drupal-7 | Exploit, Third Party Advisory |
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| simple_hierarchical_select_project | simple_hierarchical_select | * |
{
"affected": [
{
"affectedData": [
{
"collectionURL": "https://www.drupal.org/project/shs",
"defaultStatus": "unknown",
"product": "Simple Hierarchical Select (shs)",
"repo": "https://git.drupalcode.org/project/shs",
"vendor": "Drupal",
"versions": [
{
"lessThan": "7.x-1.11",
"status": "affected",
"version": "7.x-1.0",
"versionType": "custom"
}
]
}
],
"source": "mlhess@drupal.org"
}
],
"configurations": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:simple_hierarchical_select_project:simple_hierarchical_select:*:*:*:*:*:drupal:*:*",
"matchCriteriaId": "9A776A74-A4A3-4FF7-A4F3-A5117B841270",
"versionEndIncluding": "7.x-1.10",
"versionStartIncluding": "7.x-1.0",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "Simple Hierarchical Select (SHS) for Drupal 7 contains cross-site scripting risk due to improper output escaping of term-derived text. Confirmed affected paths include field formatter output (shs_field_formatter_view) and term-tree child-term data generation (shs_term_get_children). Malicious taxonomy term names can be rendered unsafely depending on output context.\nThis affects versions from 7.x-1.0 through (and including) 7.x-1.10."
},
{
"lang": "es",
"value": "Simple Hierarchical Select (SHS) para Drupal 7 contiene riesgo de cross-site scripting debido a un escape de salida incorrecto de texto derivado de t\u00e9rminos. Las rutas afectadas confirmadas incluyen la salida del formateador de campo (shs_field_formatter_view) y la generaci\u00f3n de datos de t\u00e9rminos hijos del \u00e1rbol de t\u00e9rminos (shs_term_get_children). Nombres de t\u00e9rminos de taxonom\u00eda maliciosos pueden ser renderizados de forma insegura dependiendo del contexto de salida.\nEsto afecta a las versiones desde la 7.x-1.0 hasta (e incluyendo) la 7.x-1.10."
}
],
"id": "CVE-2026-4929",
"lastModified": "2026-07-23T16:10:00.137",
"metrics": {
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 5.4,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "LOW",
"integrityImpact": "LOW",
"privilegesRequired": "LOW",
"scope": "CHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N",
"version": "3.1"
},
"exploitabilityScore": 2.3,
"impactScore": 2.7,
"source": "nvd@nist.gov",
"type": "Primary"
}
],
"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": "mlhess@drupal.org",
"type": "Secondary"
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2026-4929",
"options": [
{
"exploitation": "poc"
},
{
"automatable": "no"
},
{
"technicalImpact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-05-22T12:52:40.007115Z",
"version": "2.0.3"
}
}
]
},
"published": "2026-05-21T22:16:48.420",
"references": [
{
"source": "mlhess@drupal.org",
"tags": [
"Third Party Advisory"
],
"url": "https://d7es.tag1.com/security-advisories/simple-hierarchical-select-moderately-critical-cross-site-scripting"
},
{
"source": "mlhess@drupal.org",
"tags": [
"Exploit",
"Third Party Advisory"
],
"url": "https://www.herodevs.com/vulnerability-directory/cve-2026-4929"
},
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"tags": [
"Exploit",
"Third Party Advisory"
],
"url": "https://www.herodevs.com/vulnerability-directory/cve-2026-4929?nes-for-drupal-7"
}
],
"sourceIdentifier": "mlhess@drupal.org",
"vulnStatus": "Analyzed",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-79"
}
],
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"type": "Secondary"
}
]
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
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.
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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.
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.
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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.
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