CVE-2026-40991 (GCVE-0-2026-40991)
Vulnerability from cvelistv5 – Published: 2026-06-09 23:46 – Updated: 2026-06-27 21:10
VLAI
EPSS
VEX
Title
XML External Entity (XXE) injection when documenting untrusted XML content
Summary
When using spring-restdocs-webtestclient or spring-restdocs-restassured to document a remote API accessed over HTTP, an attacker who compromises the API or tricks the user into documenting a malicious API can perform an XXE injection attack when the documentation-generating tests are next executed.
Affected versions:
Spring REST Docs 4.0.0; 3.0.0 through 3.0.5; 2.0.0.RELEASE through 2.0.8.RELEASE.
Severity
5.9 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-10 13:01 UTC
CWE
- CWE-611 - Improper Restriction of XML External Entity Reference
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Spring | Spring REST Docs |
Affected:
4.0.0 , < 4.0.0.1
(custom)
Affected: 3.0.0 , < 3.0.5.1 (custom) Affected: 2.0.0.RELEASE , < 2.0.9.RELEASE (custom) |
guessed |
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-40991",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-06-10T13:01:26.403312Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-06-10T13:01:36.180Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Spring REST Docs",
"vendor": "Spring",
"versions": [
{
"lessThan": "4.0.0.1",
"status": "affected",
"version": "4.0.0",
"versionType": "custom"
},
{
"lessThan": "3.0.5.1",
"status": "affected",
"version": "3.0.0",
"versionType": "custom"
},
{
"lessThan": "2.0.9.RELEASE",
"status": "affected",
"version": "2.0.0.RELEASE",
"versionType": "custom"
}
]
}
],
"descriptions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "When using spring-restdocs-webtestclient or spring-restdocs-restassured to document a remote API accessed over HTTP, an attacker who compromises the API or tricks the user into documenting a malicious API can perform an XXE injection attack when the documentation-generating tests are next executed.\n\nAffected versions:\nSpring REST Docs 4.0.0; 3.0.0 through 3.0.5; 2.0.0.RELEASE through 2.0.8.RELEASE."
}
],
"value": "When using spring-restdocs-webtestclient or spring-restdocs-restassured to document a remote API accessed over HTTP, an attacker who compromises the API or tricks the user into documenting a malicious API can perform an XXE injection attack when the documentation-generating tests are next executed.\n\nAffected versions:\nSpring REST Docs 4.0.0; 3.0.0 through 3.0.5; 2.0.0.RELEASE through 2.0.8.RELEASE."
}
],
"impacts": [
{
"descriptions": [
{
"lang": "en",
"value": "An attacker who can compromise or impersonate a remote API can perform an XXE injection attack when spring-restdocs documentation tests execute against the malicious endpoint."
}
]
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "HIGH",
"attackVector": "NETWORK",
"availabilityImpact": "LOW",
"baseScore": 5.9,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "HIGH",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:L",
"version": "3.1"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-611",
"description": "CWE-611: Improper Restriction of XML External Entity Reference",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-06-27T21:10:14.865Z",
"orgId": "dcf2e128-44bd-42ed-91e8-88f912c1401d",
"shortName": "vmware"
},
"references": [
{
"url": "https://spring.io/security/cve-2026-40991"
}
],
"source": {
"discovery": "UNKNOWN"
},
"title": "XML External Entity (XXE) injection when documenting untrusted XML content",
"x_generator": {
"engine": "Vulnogram 1.0.1"
}
}
},
"cveMetadata": {
"assignerOrgId": "dcf2e128-44bd-42ed-91e8-88f912c1401d",
"assignerShortName": "vmware",
"cveId": "CVE-2026-40991",
"datePublished": "2026-06-09T23:46:33.676Z",
"dateReserved": "2026-04-16T02:19:09.389Z",
"dateUpdated": "2026-06-27T21:10:14.865Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"epss": {
"cve": "CVE-2026-40991",
"date": "2026-09-22",
"epss": "0.00223",
"percentile": "0.13113"
},
"nvd": {
"cve": {
"affected": [
{
"affectedData": [
{
"defaultStatus": "unaffected",
"product": "Spring REST Docs",
"vendor": "Spring",
"versions": [
{
"lessThan": "4.0.0.1",
"status": "affected",
"version": "4.0.0",
"versionType": "custom"
},
{
"lessThan": "3.0.5.1",
"status": "affected",
"version": "3.0.0",
"versionType": "custom"
},
{
"lessThan": "2.0.9.RELEASE",
"status": "affected",
"version": "2.0.0.RELEASE",
"versionType": "custom"
}
]
}
],
"source": "security@vmware.com"
}
],
"configurations": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:broadcom:spring_rest_docs:*:*:*:*:*:*:*:*",
"matchCriteriaId": "5F69364E-A2BF-487A-A3DA-090D7D529779",
"versionEndExcluding": "2.0.9",
"versionStartIncluding": "2.0.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:broadcom:spring_rest_docs:*:*:*:*:*:*:*:*",
"matchCriteriaId": "B5D318C1-D504-4260-84D2-151909F8DF54",
"versionEndExcluding": "3.0.5.1",
"versionStartIncluding": "3.0.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:broadcom:spring_rest_docs:4.0.0:-:*:*:*:*:*:*",
"matchCriteriaId": "AE4B0082-FA1B-4925-9DCD-3FBB07725452",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "When using spring-restdocs-webtestclient or spring-restdocs-restassured to document a remote API accessed over HTTP, an attacker who compromises the API or tricks the user into documenting a malicious API can perform an XXE injection attack when the documentation-generating tests are next executed.\n\nAffected versions:\nSpring REST Docs 4.0.0; 3.0.0 through 3.0.5; 2.0.0.RELEASE through 2.0.8.RELEASE."
},
{
"lang": "es",
"value": "Al usar spring-restdocs-webtestclient o spring-restdocs-restassured para documentar una API remota accedida a trav\u00e9s de HTTP, un atacante que compromete la API o enga\u00f1a al usuario para que documente una API maliciosa puede realizar un ataque de inyecci\u00f3n XXE cuando las pruebas de generaci\u00f3n de documentaci\u00f3n se ejecuten a continuaci\u00f3n.\n\nVersiones afectadas:\nSpring REST Docs 4.0.0; 3.0.0 a 3.0.5; 2.0.0.RELEASE a 2.0.8.RELEASE."
}
],
"id": "CVE-2026-40991",
"lastModified": "2026-07-23T09:10:00.113",
"metrics": {
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "HIGH",
"attackVector": "NETWORK",
"availabilityImpact": "LOW",
"baseScore": 5.9,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "HIGH",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:L",
"version": "3.1"
},
"exploitabilityScore": 1.6,
"impactScore": 4.2,
"source": "security@vmware.com",
"type": "Secondary"
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2026-40991",
"options": [
{
"exploitation": "none"
},
{
"automatable": "no"
},
{
"technicalImpact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-06-10T13:01:26.403312Z",
"version": "2.0.3"
}
}
]
},
"published": "2026-06-10T00:16:50.087",
"references": [
{
"source": "security@vmware.com",
"tags": [
"Vendor Advisory"
],
"url": "https://spring.io/security/cve-2026-40991"
}
],
"sourceIdentifier": "security@vmware.com",
"vulnStatus": "Analyzed",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-611"
}
],
"source": "security@vmware.com",
"type": "Secondary"
}
]
}
},
"vulnrichment": {
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-40991",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-06-10T13:01:26.403312Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-06-10T13:01:32.251Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Spring REST Docs",
"vendor": "Spring",
"versions": [
{
"lessThan": "4.0.0.1",
"status": "affected",
"version": "4.0.0",
"versionType": "custom"
},
{
"lessThan": "3.0.5.1",
"status": "affected",
"version": "3.0.0",
"versionType": "custom"
},
{
"lessThan": "2.0.9.RELEASE",
"status": "affected",
"version": "2.0.0.RELEASE",
"versionType": "custom"
}
]
}
],
"descriptions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "When using spring-restdocs-webtestclient or spring-restdocs-restassured to document a remote API accessed over HTTP, an attacker who compromises the API or tricks the user into documenting a malicious API can perform an XXE injection attack when the documentation-generating tests are next executed.\n\nAffected versions:\nSpring REST Docs 4.0.0; 3.0.0 through 3.0.5; 2.0.0.RELEASE through 2.0.8.RELEASE."
}
],
"value": "When using spring-restdocs-webtestclient or spring-restdocs-restassured to document a remote API accessed over HTTP, an attacker who compromises the API or tricks the user into documenting a malicious API can perform an XXE injection attack when the documentation-generating tests are next executed.\n\nAffected versions:\nSpring REST Docs 4.0.0; 3.0.0 through 3.0.5; 2.0.0.RELEASE through 2.0.8.RELEASE."
}
],
"impacts": [
{
"descriptions": [
{
"lang": "en",
"value": "An attacker who can compromise or impersonate a remote API can perform an XXE injection attack when spring-restdocs documentation tests execute against the malicious endpoint."
}
]
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "HIGH",
"attackVector": "NETWORK",
"availabilityImpact": "LOW",
"baseScore": 5.9,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "HIGH",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:L",
"version": "3.1"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-611",
"description": "CWE-611: Improper Restriction of XML External Entity Reference",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-06-27T21:10:14.865Z",
"orgId": "dcf2e128-44bd-42ed-91e8-88f912c1401d",
"shortName": "vmware"
},
"references": [
{
"url": "https://spring.io/security/cve-2026-40991"
}
],
"source": {
"discovery": "UNKNOWN"
},
"title": "XML External Entity (XXE) injection when documenting untrusted XML content",
"x_generator": {
"engine": "Vulnogram 1.0.1"
}
}
},
"cveMetadata": {
"assignerOrgId": "dcf2e128-44bd-42ed-91e8-88f912c1401d",
"assignerShortName": "vmware",
"cveId": "CVE-2026-40991",
"datePublished": "2026-06-09T23:46:33.676Z",
"dateReserved": "2026-04-16T02:19:09.389Z",
"dateUpdated": "2026-06-27T21:10:14.865Z",
"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…
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…