Search
Find a vulnerability
Search criteria
2 vulnerabilities found for Logback-classic by QOS.CH Sarl
CVE-2026-19880 (GCVE-0-2026-19880)
Vulnerability from nvd – Published: 2026-08-14 14:31 – Updated: 2026-08-14 19:46
VLAI
EPSS
VEX
Title
Incomplete protection against CVE-2025-11226
Summary
Path-traversal vulnerability in QOS.CH Sarl Logback-classic on Java (logback-classic module) allows path-traversal vulnerability. More specifically, an
MDC-based discriminator value flows unsanitized into a nested
FileAppender path, letting an attacker who influences that MDC value
(e.g. via an HTTP header)
create and append log files outside the intended directory.
This issue affects Logback-classic: from 0.9.14 through 1.6.2.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-14 19:46 UTC
CWE
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| QOS.CH Sarl | Logback-classic |
Affected:
0.9.14 , ≤ 1.6.2
(maven)
Unaffected: 1.6.3 (maven) |
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-19880",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-08-14T19:46:26.570632Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-08-14T19:46:37.661Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "affected",
"modules": [
"logback-classic"
],
"platforms": [
"Java"
],
"product": "Logback-classic",
"vendor": "QOS.CH Sarl",
"versions": [
{
"lessThanOrEqual": "1.6.2",
"status": "affected",
"version": "0.9.14",
"versionType": "maven"
},
{
"status": "unaffected",
"version": "1.6.3",
"versionType": "maven"
}
]
}
],
"credits": [
{
"lang": "en",
"type": "finder",
"value": "York Shen - Yong Shen - PayPal Cyber Security Team (UID 100171)"
}
],
"descriptions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "Path-traversal vulnerability in QOS.CH Sarl Logback-classic on Java (logback-classic module) allows path-traversal vulnerability. More specifically, an \nMDC-based discriminator value flows unsanitized into a nested \nFileAppender path, letting an attacker who influences that MDC value \n(e.g. via an HTTP header)\n create and append log files outside the intended directory. \u003cp\u003e\u003cbr\u003eThis issue affects Logback-classic: from 0.9.14 through 1.6.2.\u003cbr\u003e\u003cbr\u003e\u003c/p\u003e"
}
],
"value": "Path-traversal vulnerability in QOS.CH Sarl Logback-classic on Java (logback-classic module) allows path-traversal vulnerability. More specifically, an \nMDC-based discriminator value flows unsanitized into a nested \nFileAppender path, letting an attacker who influences that MDC value \n(e.g. via an HTTP header)\n create and append log files outside the intended directory. \n\n\nThis issue affects Logback-classic: from 0.9.14 through 1.6.2."
}
],
"exploits": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "No known exploitation\u003cbr\u003e"
}
],
"value": "No known exploitation"
}
],
"impacts": [
{
"descriptions": [
{
"lang": "en",
"value": "path-traversal vulnerability"
}
]
}
],
"metrics": [
{
"cvssV4_0": {
"Automatable": "NO",
"Recovery": "NOT_DEFINED",
"Safety": "PRESENT",
"attackComplexity": "LOW",
"attackRequirements": "PRESENT",
"attackVector": "NETWORK",
"baseScore": 6.3,
"baseSeverity": "MEDIUM",
"exploitMaturity": "NOT_DEFINED",
"privilegesRequired": "NONE",
"providerUrgency": "GREEN",
"subAvailabilityImpact": "NONE",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"userInteraction": "NONE",
"valueDensity": "NOT_DEFINED",
"vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/S:P/AU:N/RE:M/U:Green",
"version": "4.0",
"vulnAvailabilityImpact": "LOW",
"vulnConfidentialityImpact": "LOW",
"vulnIntegrityImpact": "LOW",
"vulnerabilityResponseEffort": "MODERATE"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-22",
"description": "CWE-22",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-08-14T14:31:02.361Z",
"orgId": "455daabc-a392-441d-aa46-37d35189897c",
"shortName": "NCSC.ch"
},
"references": [
{
"url": "https://logback.qos.ch/news.html#1.6.3"
}
],
"solutions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "Update to logack version 1.6.3 or later.\u0026nbsp;This vulnerability requires \nSiftingAppender to be active as well as unsanitized data provided by an \nattacker that MDCDiscriminator makes use of.\u0026nbsp;\u003cbr\u003e\u003cbr\u003eSanitizing relevant data provided by the user should fix this vulnerability."
}
],
"value": "Update to logack version 1.6.3 or later.\u00a0This vulnerability requires \nSiftingAppender to be active as well as unsanitized data provided by an \nattacker that MDCDiscriminator makes use of.\u00a0\n\nSanitizing relevant data provided by the user should fix this vulnerability."
}
],
"source": {
"discovery": "UNKNOWN"
},
"title": "Incomplete protection against CVE-2025-11226",
"workarounds": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "Update to logack version 1.6.3 or later.\u0026nbsp;This vulnerability requires SiftingAppender to be active as well as unsanitized data provided by an attacker that MDCDiscriminator makes use of."
}
],
"value": "Update to logack version 1.6.3 or later.\u00a0This vulnerability requires SiftingAppender to be active as well as unsanitized data provided by an attacker that MDCDiscriminator makes use of."
}
],
"x_generator": {
"engine": "Vulnogram 0.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "455daabc-a392-441d-aa46-37d35189897c",
"assignerShortName": "NCSC.ch",
"cveId": "CVE-2026-19880",
"datePublished": "2026-08-14T14:31:02.361Z",
"dateReserved": "2026-08-14T14:30:11.651Z",
"dateUpdated": "2026-08-14T19:46:37.661Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2026-19880 (GCVE-0-2026-19880)
Vulnerability from cvelistv5 – Published: 2026-08-14 14:31 – Updated: 2026-08-14 19:46
VLAI
EPSS
VEX
Title
Incomplete protection against CVE-2025-11226
Summary
Path-traversal vulnerability in QOS.CH Sarl Logback-classic on Java (logback-classic module) allows path-traversal vulnerability. More specifically, an
MDC-based discriminator value flows unsanitized into a nested
FileAppender path, letting an attacker who influences that MDC value
(e.g. via an HTTP header)
create and append log files outside the intended directory.
This issue affects Logback-classic: from 0.9.14 through 1.6.2.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-14 19:46 UTC
CWE
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| QOS.CH Sarl | Logback-classic |
Affected:
0.9.14 , ≤ 1.6.2
(maven)
Unaffected: 1.6.3 (maven) |
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-19880",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-08-14T19:46:26.570632Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-08-14T19:46:37.661Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "affected",
"modules": [
"logback-classic"
],
"platforms": [
"Java"
],
"product": "Logback-classic",
"vendor": "QOS.CH Sarl",
"versions": [
{
"lessThanOrEqual": "1.6.2",
"status": "affected",
"version": "0.9.14",
"versionType": "maven"
},
{
"status": "unaffected",
"version": "1.6.3",
"versionType": "maven"
}
]
}
],
"credits": [
{
"lang": "en",
"type": "finder",
"value": "York Shen - Yong Shen - PayPal Cyber Security Team (UID 100171)"
}
],
"descriptions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "Path-traversal vulnerability in QOS.CH Sarl Logback-classic on Java (logback-classic module) allows path-traversal vulnerability. More specifically, an \nMDC-based discriminator value flows unsanitized into a nested \nFileAppender path, letting an attacker who influences that MDC value \n(e.g. via an HTTP header)\n create and append log files outside the intended directory. \u003cp\u003e\u003cbr\u003eThis issue affects Logback-classic: from 0.9.14 through 1.6.2.\u003cbr\u003e\u003cbr\u003e\u003c/p\u003e"
}
],
"value": "Path-traversal vulnerability in QOS.CH Sarl Logback-classic on Java (logback-classic module) allows path-traversal vulnerability. More specifically, an \nMDC-based discriminator value flows unsanitized into a nested \nFileAppender path, letting an attacker who influences that MDC value \n(e.g. via an HTTP header)\n create and append log files outside the intended directory. \n\n\nThis issue affects Logback-classic: from 0.9.14 through 1.6.2."
}
],
"exploits": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "No known exploitation\u003cbr\u003e"
}
],
"value": "No known exploitation"
}
],
"impacts": [
{
"descriptions": [
{
"lang": "en",
"value": "path-traversal vulnerability"
}
]
}
],
"metrics": [
{
"cvssV4_0": {
"Automatable": "NO",
"Recovery": "NOT_DEFINED",
"Safety": "PRESENT",
"attackComplexity": "LOW",
"attackRequirements": "PRESENT",
"attackVector": "NETWORK",
"baseScore": 6.3,
"baseSeverity": "MEDIUM",
"exploitMaturity": "NOT_DEFINED",
"privilegesRequired": "NONE",
"providerUrgency": "GREEN",
"subAvailabilityImpact": "NONE",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"userInteraction": "NONE",
"valueDensity": "NOT_DEFINED",
"vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/S:P/AU:N/RE:M/U:Green",
"version": "4.0",
"vulnAvailabilityImpact": "LOW",
"vulnConfidentialityImpact": "LOW",
"vulnIntegrityImpact": "LOW",
"vulnerabilityResponseEffort": "MODERATE"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-22",
"description": "CWE-22",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-08-14T14:31:02.361Z",
"orgId": "455daabc-a392-441d-aa46-37d35189897c",
"shortName": "NCSC.ch"
},
"references": [
{
"url": "https://logback.qos.ch/news.html#1.6.3"
}
],
"solutions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "Update to logack version 1.6.3 or later.\u0026nbsp;This vulnerability requires \nSiftingAppender to be active as well as unsanitized data provided by an \nattacker that MDCDiscriminator makes use of.\u0026nbsp;\u003cbr\u003e\u003cbr\u003eSanitizing relevant data provided by the user should fix this vulnerability."
}
],
"value": "Update to logack version 1.6.3 or later.\u00a0This vulnerability requires \nSiftingAppender to be active as well as unsanitized data provided by an \nattacker that MDCDiscriminator makes use of.\u00a0\n\nSanitizing relevant data provided by the user should fix this vulnerability."
}
],
"source": {
"discovery": "UNKNOWN"
},
"title": "Incomplete protection against CVE-2025-11226",
"workarounds": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "Update to logack version 1.6.3 or later.\u0026nbsp;This vulnerability requires SiftingAppender to be active as well as unsanitized data provided by an attacker that MDCDiscriminator makes use of."
}
],
"value": "Update to logack version 1.6.3 or later.\u00a0This vulnerability requires SiftingAppender to be active as well as unsanitized data provided by an attacker that MDCDiscriminator makes use of."
}
],
"x_generator": {
"engine": "Vulnogram 0.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "455daabc-a392-441d-aa46-37d35189897c",
"assignerShortName": "NCSC.ch",
"cveId": "CVE-2026-19880",
"datePublished": "2026-08-14T14:31:02.361Z",
"dateReserved": "2026-08-14T14:30:11.651Z",
"dateUpdated": "2026-08-14T19:46:37.661Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}