CVE-2026-23768 (GCVE-0-2026-23768)
Vulnerability from cvelistv5 – Published: 2026-01-16 05:20 – Updated: 2026-01-16 16:01 Unsupported When Assigned
VLAI
EPSS
VEX
Summary
lucy-xss-filter before commit 7c1de6d allows an attacker to induce server-side HEAD requests to arbitrary URLs when the ObjectSecurityListener or EmbedSecurityListener option is enabled and embed or object tags are used with a src attribute missing a file extension.
Severity
6.1 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-01-16 16:00 UTC
CWE
- CWE-918 - Server-Side Request Forgery (SSRF)
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://cve.naver.com/detail/cve-2026-23768.html | vendor-advisory |
| https://github.com/naver/lucy-xss-filter/pull/31 | mitigation |
Impacted products
1 product
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| NAVER | lucy-xss-filter |
Unaffected:
7c1de6db76749ceb7b382493da29c4348853cf6b
(git)
|
guessed |
{
"containers": {
"adp": [
{
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 6.1,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "LOW",
"integrityImpact": "LOW",
"privilegesRequired": "NONE",
"scope": "CHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
"version": "3.1"
}
},
{
"other": {
"content": {
"id": "CVE-2026-23768",
"options": [
{
"Exploitation": "poc"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-01-16T16:00:12.874657Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-01-16T16:01:19.373Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "affected",
"product": "lucy-xss-filter",
"repo": "https://github.com/naver/lucy-xss-filter",
"vendor": "NAVER",
"versions": [
{
"status": "unaffected",
"version": "7c1de6db76749ceb7b382493da29c4348853cf6b",
"versionType": "git"
}
]
}
],
"credits": [
{
"lang": "en",
"type": "finder",
"value": "ksw9722 / Kim Si Ung"
}
],
"descriptions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "lucy-xss-filter before commit 7c1de6d allows an attacker to induce server-side HEAD requests to arbitrary URLs when the ObjectSecurityListener or EmbedSecurityListener option is enabled and embed or object tags are used with a src attribute missing a file extension.\u003cbr\u003e"
}
],
"value": "lucy-xss-filter before commit 7c1de6d allows an attacker to induce server-side HEAD requests to arbitrary URLs when the ObjectSecurityListener or EmbedSecurityListener option is enabled and embed or object tags are used with a src attribute missing a file extension."
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-918",
"description": "CWE-918 Server-Side Request Forgery (SSRF)",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-01-16T05:33:13.642Z",
"orgId": "f9629fae-ca2e-4fbf-9785-3ed86476aef6",
"shortName": "naver"
},
"references": [
{
"tags": [
"vendor-advisory"
],
"url": "https://cve.naver.com/detail/cve-2026-23768.html"
},
{
"tags": [
"mitigation"
],
"url": "https://github.com/naver/lucy-xss-filter/pull/31"
}
],
"source": {
"discovery": "EXTERNAL"
},
"tags": [
"unsupported-when-assigned"
],
"x_generator": {
"engine": "Vulnogram 0.5.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "f9629fae-ca2e-4fbf-9785-3ed86476aef6",
"assignerShortName": "naver",
"cveId": "CVE-2026-23768",
"datePublished": "2026-01-16T05:20:58.677Z",
"dateReserved": "2026-01-16T05:06:27.869Z",
"dateUpdated": "2026-01-16T16:01:19.373Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"epss": {
"cve": "CVE-2026-23768",
"date": "2026-09-18",
"epss": "0.00244",
"percentile": "0.15987"
},
"nvd": {
"cve": {
"affected": [
{
"affectedData": [
{
"defaultStatus": "affected",
"product": "lucy-xss-filter",
"repo": "https://github.com/naver/lucy-xss-filter",
"vendor": "NAVER",
"versions": [
{
"status": "unaffected",
"version": "7c1de6db76749ceb7b382493da29c4348853cf6b",
"versionType": "git"
}
]
}
],
"source": "cve@navercorp.com"
}
],
"configurations": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:naver:lucy-xss-filter:*:*:*:*:*:*:*:*",
"matchCriteriaId": "EE152946-8B7E-490F-986A-D584F6CC5D4D",
"versionEndExcluding": "2025-06-08",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"cveTags": [
{
"sourceIdentifier": "cve@navercorp.com",
"tags": [
"unsupported-when-assigned"
]
}
],
"descriptions": [
{
"lang": "en",
"value": "lucy-xss-filter before commit 7c1de6d allows an attacker to induce server-side HEAD requests to arbitrary URLs when the ObjectSecurityListener or EmbedSecurityListener option is enabled and embed or object tags are used with a src attribute missing a file extension."
},
{
"lang": "es",
"value": "lucy-xss-filter antes del commit 7c1de6d permite a un atacante inducir solicitudes HEAD del lado del servidor a URLs arbitrarias cuando la opci\u00f3n ObjectSecurityListener o EmbedSecurityListener est\u00e1 habilitada y se utilizan etiquetas embed u object con un atributo src al que le falta una extensi\u00f3n de archivo."
}
],
"id": "CVE-2026-23768",
"lastModified": "2026-06-17T10:22:04.937",
"metrics": {
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 6.1,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "LOW",
"integrityImpact": "LOW",
"privilegesRequired": "NONE",
"scope": "CHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
"version": "3.1"
},
"exploitabilityScore": 2.8,
"impactScore": 2.7,
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"type": "Secondary"
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2026-23768",
"options": [
{
"exploitation": "poc"
},
{
"automatable": "no"
},
{
"technicalImpact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-01-16T16:00:12.874657Z",
"version": "2.0.3"
}
}
]
},
"published": "2026-01-16T06:15:51.333",
"references": [
{
"source": "cve@navercorp.com",
"tags": [
"Vendor Advisory"
],
"url": "https://cve.naver.com/detail/cve-2026-23768.html"
},
{
"source": "cve@navercorp.com",
"tags": [
"Exploit",
"Patch"
],
"url": "https://github.com/naver/lucy-xss-filter/pull/31"
}
],
"sourceIdentifier": "cve@navercorp.com",
"vulnStatus": "Analyzed",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-918"
}
],
"source": "cve@navercorp.com",
"type": "Secondary"
}
]
}
},
"redhat_vex": {
"current_release_date": "2026-01-17T05:22:34+00:00",
"cve": "CVE-2026-23768",
"id": "CVE-2026-23768",
"initial_release_date": "2026-01-01T00:00:00+00:00",
"product_status:known_not_affected": "1",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "CVE-2026-23768",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-23768.json",
"version": "3"
},
"vulnrichment": {
"containers": {
"adp": [
{
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 6.1,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "LOW",
"integrityImpact": "LOW",
"privilegesRequired": "NONE",
"scope": "CHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
"version": "3.1"
}
},
{
"other": {
"content": {
"id": "CVE-2026-23768",
"options": [
{
"Exploitation": "poc"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-01-16T16:00:12.874657Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-01-16T16:01:01.135Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "affected",
"product": "lucy-xss-filter",
"repo": "https://github.com/naver/lucy-xss-filter",
"vendor": "NAVER",
"versions": [
{
"status": "unaffected",
"version": "7c1de6db76749ceb7b382493da29c4348853cf6b",
"versionType": "git"
}
]
}
],
"credits": [
{
"lang": "en",
"type": "finder",
"value": "ksw9722 / Kim Si Ung"
}
],
"descriptions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "lucy-xss-filter before commit 7c1de6d allows an attacker to induce server-side HEAD requests to arbitrary URLs when the ObjectSecurityListener or EmbedSecurityListener option is enabled and embed or object tags are used with a src attribute missing a file extension.\u003cbr\u003e"
}
],
"value": "lucy-xss-filter before commit 7c1de6d allows an attacker to induce server-side HEAD requests to arbitrary URLs when the ObjectSecurityListener or EmbedSecurityListener option is enabled and embed or object tags are used with a src attribute missing a file extension."
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-918",
"description": "CWE-918 Server-Side Request Forgery (SSRF)",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-01-16T05:33:13.642Z",
"orgId": "f9629fae-ca2e-4fbf-9785-3ed86476aef6",
"shortName": "naver"
},
"references": [
{
"tags": [
"vendor-advisory"
],
"url": "https://cve.naver.com/detail/cve-2026-23768.html"
},
{
"tags": [
"mitigation"
],
"url": "https://github.com/naver/lucy-xss-filter/pull/31"
}
],
"source": {
"discovery": "EXTERNAL"
},
"tags": [
"unsupported-when-assigned"
],
"x_generator": {
"engine": "Vulnogram 0.5.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "f9629fae-ca2e-4fbf-9785-3ed86476aef6",
"assignerShortName": "naver",
"cveId": "CVE-2026-23768",
"datePublished": "2026-01-16T05:20:58.677Z",
"dateReserved": "2026-01-16T05:06:27.869Z",
"dateUpdated": "2026-01-16T16:01:19.373Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
Loading…
Loading…
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.
Loading…
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.
Loading…
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.
Loading…