CVE-2026-62679 (GCVE-0-2026-62679)
Vulnerability from cvelistv5 – Published: 2026-10-15 16:33 – Updated: 2026-10-16 17:13
VLAI
EPSS
VEX
Title
Lychee: Path traversal in `SecurePathController` allows authenticated arbitrary file read
Summary
Lychee is a free, open-source photo-management tool. Prior to 7.6.4, SecurePathController, which serves GET /image/{path}, concatenates the attacker-controlled path with the local storage root and performs a string-prefix check before canonicalizing dot segments. Under the supported non-default configuration with temporary_image_link_enabled enabled, temporary_image_link_when_logged_in disabled, and secure_image_link_enabled disabled, any authenticated user can submit encoded traversal segments that pass the prefix check and are later resolved by filesystem operations. This permits reading files available to the web process, including application configuration and other users' private images, and disclosed APP_KEY or database credentials can enable further compromise. This issue is fixed in version 7.6.4.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-15 20:24 UTC
CWE
- CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/LycheeOrg/Lychee/security/advi… | x_refsource_CONFIRM |
| https://github.com/LycheeOrg/Lychee/pull/4465 | x_refsource_MISC |
| https://github.com/LycheeOrg/Lychee/commit/f4553f… | x_refsource_MISC |
| https://github.com/LycheeOrg/Lychee/releases/tag/v7.6.4 | x_refsource_MISC |
Impacted products
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-62679",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-10-15T20:24:43.582420Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-10-16T17:13:13.881Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"product": "Lychee",
"vendor": "LycheeOrg",
"versions": [
{
"status": "affected",
"version": "\u003c 7.6.4"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "Lychee is a free, open-source photo-management tool. Prior to 7.6.4, SecurePathController, which serves GET /image/{path}, concatenates the attacker-controlled path with the local storage root and performs a string-prefix check before canonicalizing dot segments. Under the supported non-default configuration with temporary_image_link_enabled enabled, temporary_image_link_when_logged_in disabled, and secure_image_link_enabled disabled, any authenticated user can submit encoded traversal segments that pass the prefix check and are later resolved by filesystem operations. This permits reading files available to the web process, including application configuration and other users\u0027 private images, and disclosed APP_KEY or database credentials can enable further compromise. This issue is fixed in version 7.6.4."
}
],
"metrics": [
{
"cvssV4_0": {
"attackComplexity": "LOW",
"attackRequirements": "PRESENT",
"attackVector": "NETWORK",
"baseScore": 8.9,
"baseSeverity": "HIGH",
"privilegesRequired": "LOW",
"subAvailabilityImpact": "HIGH",
"subConfidentialityImpact": "HIGH",
"subIntegrityImpact": "HIGH",
"userInteraction": "NONE",
"vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:N/SC:H/SI:H/SA:H",
"version": "4.0",
"vulnAvailabilityImpact": "NONE",
"vulnConfidentialityImpact": "HIGH",
"vulnIntegrityImpact": "HIGH"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-22",
"description": "CWE-22: Improper Limitation of a Pathname to a Restricted Directory (\u0027Path Traversal\u0027)",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-10-15T16:33:43.958Z",
"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"shortName": "GitHub_M"
},
"references": [
{
"name": "https://github.com/LycheeOrg/Lychee/security/advisories/GHSA-j5ff-34x8-xxqg",
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://github.com/LycheeOrg/Lychee/security/advisories/GHSA-j5ff-34x8-xxqg"
},
{
"name": "https://github.com/LycheeOrg/Lychee/pull/4465",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/LycheeOrg/Lychee/pull/4465"
},
{
"name": "https://github.com/LycheeOrg/Lychee/commit/f4553f6e0145ec4e02360c6121bd169e87b5d05f",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/LycheeOrg/Lychee/commit/f4553f6e0145ec4e02360c6121bd169e87b5d05f"
},
{
"name": "https://github.com/LycheeOrg/Lychee/releases/tag/v7.6.4",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/LycheeOrg/Lychee/releases/tag/v7.6.4"
}
],
"source": {
"advisory": "GHSA-j5ff-34x8-xxqg",
"discovery": "UNKNOWN"
},
"title": "Lychee: Path traversal in `SecurePathController` allows authenticated arbitrary file read"
}
},
"cveMetadata": {
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"assignerShortName": "GitHub_M",
"cveId": "CVE-2026-62679",
"datePublished": "2026-10-15T16:33:43.958Z",
"dateReserved": "2026-07-14T20:22:04.395Z",
"dateUpdated": "2026-10-16T17:13:13.881Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"epss": {
"cve": "CVE-2026-62679",
"date": "2026-10-16",
"epss": "0.00353",
"percentile": "0.27416"
},
"nvd": {
"cve": {
"affected": [
{
"affectedData": [
{
"product": "Lychee",
"vendor": "LycheeOrg",
"versions": [
{
"status": "affected",
"version": "\u003c 7.6.4"
}
]
}
],
"source": "security-advisories@github.com"
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "Lychee is a free, open-source photo-management tool. Prior to 7.6.4, SecurePathController, which serves GET /image/{path}, concatenates the attacker-controlled path with the local storage root and performs a string-prefix check before canonicalizing dot segments. Under the supported non-default configuration with temporary_image_link_enabled enabled, temporary_image_link_when_logged_in disabled, and secure_image_link_enabled disabled, any authenticated user can submit encoded traversal segments that pass the prefix check and are later resolved by filesystem operations. This permits reading files available to the web process, including application configuration and other users\u0027 private images, and disclosed APP_KEY or database credentials can enable further compromise. This issue is fixed in version 7.6.4."
}
],
"id": "CVE-2026-62679",
"lastModified": "2026-10-16T18:17:59.390",
"metrics": {
"cvssMetricV40": [
{
"cvssData": {
"Automatable": "NOT_DEFINED",
"Recovery": "NOT_DEFINED",
"Safety": "NOT_DEFINED",
"attackComplexity": "LOW",
"attackRequirements": "PRESENT",
"attackVector": "NETWORK",
"availabilityRequirement": "NOT_DEFINED",
"baseScore": 8.9,
"baseSeverity": "HIGH",
"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": "HIGH",
"subConfidentialityImpact": "HIGH",
"subIntegrityImpact": "HIGH",
"userInteraction": "NONE",
"valueDensity": "NOT_DEFINED",
"vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:N/SC:H/SI:H/SA:H/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": "HIGH",
"vulnIntegrityImpact": "HIGH",
"vulnerabilityResponseEffort": "NOT_DEFINED"
},
"source": "security-advisories@github.com",
"type": "Secondary"
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2026-62679",
"options": [
{
"exploitation": "none"
},
{
"automatable": "no"
},
{
"technicalImpact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-10-15T20:24:43.582420Z",
"version": "2.0.3"
}
}
]
},
"published": "2026-10-15T17:17:26.820",
"references": [
{
"source": "security-advisories@github.com",
"url": "https://github.com/LycheeOrg/Lychee/commit/f4553f6e0145ec4e02360c6121bd169e87b5d05f"
},
{
"source": "security-advisories@github.com",
"url": "https://github.com/LycheeOrg/Lychee/pull/4465"
},
{
"source": "security-advisories@github.com",
"url": "https://github.com/LycheeOrg/Lychee/releases/tag/v7.6.4"
},
{
"source": "security-advisories@github.com",
"url": "https://github.com/LycheeOrg/Lychee/security/advisories/GHSA-j5ff-34x8-xxqg"
}
],
"sourceIdentifier": "security-advisories@github.com",
"vulnStatus": "Deferred",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-22"
}
],
"source": "security-advisories@github.com",
"type": "Secondary"
}
]
}
},
"vulnrichment": {
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-62679",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-10-15T20:24:43.582420Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-10-15T20:24:44.555Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"product": "Lychee",
"vendor": "LycheeOrg",
"versions": [
{
"status": "affected",
"version": "\u003c 7.6.4"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "Lychee is a free, open-source photo-management tool. Prior to 7.6.4, SecurePathController, which serves GET /image/{path}, concatenates the attacker-controlled path with the local storage root and performs a string-prefix check before canonicalizing dot segments. Under the supported non-default configuration with temporary_image_link_enabled enabled, temporary_image_link_when_logged_in disabled, and secure_image_link_enabled disabled, any authenticated user can submit encoded traversal segments that pass the prefix check and are later resolved by filesystem operations. This permits reading files available to the web process, including application configuration and other users\u0027 private images, and disclosed APP_KEY or database credentials can enable further compromise. This issue is fixed in version 7.6.4."
}
],
"metrics": [
{
"cvssV4_0": {
"attackComplexity": "LOW",
"attackRequirements": "PRESENT",
"attackVector": "NETWORK",
"baseScore": 8.9,
"baseSeverity": "HIGH",
"privilegesRequired": "LOW",
"subAvailabilityImpact": "HIGH",
"subConfidentialityImpact": "HIGH",
"subIntegrityImpact": "HIGH",
"userInteraction": "NONE",
"vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:N/SC:H/SI:H/SA:H",
"version": "4.0",
"vulnAvailabilityImpact": "NONE",
"vulnConfidentialityImpact": "HIGH",
"vulnIntegrityImpact": "HIGH"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-22",
"description": "CWE-22: Improper Limitation of a Pathname to a Restricted Directory (\u0027Path Traversal\u0027)",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-10-15T16:33:43.958Z",
"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"shortName": "GitHub_M"
},
"references": [
{
"name": "https://github.com/LycheeOrg/Lychee/security/advisories/GHSA-j5ff-34x8-xxqg",
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://github.com/LycheeOrg/Lychee/security/advisories/GHSA-j5ff-34x8-xxqg"
},
{
"name": "https://github.com/LycheeOrg/Lychee/pull/4465",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/LycheeOrg/Lychee/pull/4465"
},
{
"name": "https://github.com/LycheeOrg/Lychee/commit/f4553f6e0145ec4e02360c6121bd169e87b5d05f",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/LycheeOrg/Lychee/commit/f4553f6e0145ec4e02360c6121bd169e87b5d05f"
},
{
"name": "https://github.com/LycheeOrg/Lychee/releases/tag/v7.6.4",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/LycheeOrg/Lychee/releases/tag/v7.6.4"
}
],
"source": {
"advisory": "GHSA-j5ff-34x8-xxqg",
"discovery": "UNKNOWN"
},
"title": "Lychee: Path traversal in `SecurePathController` allows authenticated arbitrary file read"
}
},
"cveMetadata": {
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"assignerShortName": "GitHub_M",
"cveId": "CVE-2026-62679",
"datePublished": "2026-10-15T16:33:43.958Z",
"dateReserved": "2026-07-14T20:22:04.395Z",
"dateUpdated": "2026-10-16T17:13:13.881Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
Loading…
Loading…
Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.
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.
Vulnerability timeline
Sightings and recorded dates, grouped by day · UTC
Loading timeline…
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.