cve-2026-119300
MEDIUM CVSS 6.5 gcve_enrichedWekan is open source kanban built with Meteor. Prior to 11.11, the user-search publication in server/publications/users.js and the searchUsers method in server/models/users.js pass authenticated user-controlled searchTerm and query values to new RegExp() without escaping regular-expression metacharacters. MongoDB-backed deployments evaluate the resulting patterns with PCRE2, allowing a logged-in user to submit catastrophic-backtracking expressions that consume database CPU and degrade or deny service to other users; searchUsers additionally requires board membership or site-admin status. The FerretDB v1 / RE2 unaffected configuration is not practically affected by catastrophic backtracking. This issue is fixed in version 11.11.
- Published
- 2026-10-30 16:29 UTC
- Last Modified
- 2026-11-04
- Attack Vector
- NETWORK
- Attack Complexity
- LOW
- Privileges Required
- LOW
- wekan wekan
- Exploitation
poc- Automatable
no- Technical Impact
partial- Decision timestamp
2026-11-04T23:00:38.538587Z
What is SSVC? — CISA's vulnerability-prioritisation framework using a decision tree rather than a single score.
- https://github.com/wekan/wekan/security/advisories/GHSA-9846-cj96-6hv5 x_refsource_CONFIRM
- https://github.com/wekan/wekan/commit/4ce5cf6e102854d326e1dcacde6cd20614525dec x_refsource_MISC
- https://github.com/wekan/wekan/releases/tag/v11.11 x_refsource_MISC
No linked vulnerabilities found.
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-119300",
"options": [
{
"Exploitation": "poc"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-11-04T23:00:38.538587Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-11-04T23:01:02.327Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"references": [
{
"tags": [
"exploit"
],
"url": "https://github.com/wekan/wekan/security/advisories/GHSA-9846-cj96-6hv5"
}
],
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"product": "wekan",
"vendor": "wekan",
"versions": [
{
"status": "affected",
"version": "< 11.11"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "Wekan is open source kanban built with Meteor. Prior to 11.11, the user-search publication in server/publications/users.js and the searchUsers method in server/models/users.js pass authenticated user-controlled searchTerm and query values to new RegExp() without escaping regular-expression metacharacters. MongoDB-backed deployments evaluate the resulting patterns with PCRE2, allowing a logged-in user to submit catastrophic-backtracking expressions that consume database CPU and degrade or deny service to other users; searchUsers additionally requires board membership or site-admin status. The FerretDB v1 / RE2 unaffected configuration is not practically affected by catastrophic backtracking. This issue is fixed in version 11.11."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 6.5,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-1333",
"description": "CWE-1333: Inefficient Regular Expression Complexity",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-10-30T16:29:16.786Z",
"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"shortName": "GitHub_M"
},
"references": [
{
"name": "https://github.com/wekan/wekan/security/advisories/GHSA-9846-cj96-6hv5",
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://github.com/wekan/wekan/security/advisories/GHSA-9846-cj96-6hv5"
},
{
"name": "https://github.com/wekan/wekan/commit/4ce5cf6e102854d326e1dcacde6cd20614525dec",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/wekan/wekan/commit/4ce5cf6e102854d326e1dcacde6cd20614525dec"
},
{
"name": "https://github.com/wekan/wekan/releases/tag/v11.11",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/wekan/wekan/releases/tag/v11.11"
}
],
"source": {
"advisory": "GHSA-9846-cj96-6hv5",
"discovery": "UNKNOWN"
},
"title": "Wekan: ReDoS via Unescaped User Input in RegExp",
"x_gcve": [
{
"recordType": "advisory",
"vulnId": "CVE-2026-119300"
}
]
}
},
"cveMetadata": {
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"assignerShortName": "GitHub_M",
"cveId": "CVE-2026-119300",
"datePublished": "2026-10-30T16:29:16.786Z",
"dateReserved": "2026-10-29T18:50:28.066Z",
"dateUpdated": "2026-11-04T23:01:02.327Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"epss": {
"cve": "CVE-2026-119300",
"date": "2026-11-04",
"epss": "0.00295",
"percentile": "0.22279"
},
"nvd": "{\"cve\":{\"id\":\"CVE-2026-119300\",\"sourceIdentifier\":\"security-advisories@github.com\",\"published\":\"2026-10-30T17:17:18.413\",\"lastModified\":\"2026-11-04T23:17:19.243\",\"vulnStatus\":\"Deferred\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"Wekan is open source kanban built with Meteor. Prior to 11.11, the user-search publication in server/publications/users.js and the searchUsers method in server/models/users.js pass authenticated user-controlled searchTerm and query values to new RegExp() without escaping regular-expression metacharacters. MongoDB-backed deployments evaluate the resulting patterns with PCRE2, allowing a logged-in user to submit catastrophic-backtracking expressions that consume database CPU and degrade or deny service to other users; searchUsers additionally requires board membership or site-admin status. The FerretDB v1 / RE2 unaffected configuration is not practically affected by catastrophic backtracking. This issue is fixed in version 11.11.\"}],\"affected\":[{\"source\":\"security-advisories@github.com\",\"affectedData\":[{\"vendor\":\"wekan\",\"product\":\"wekan\",\"versions\":[{\"version\":\"< 11.11\",\"status\":\"affected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":6.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":2.8,\"impactScore\":3.6}],\"ssvcV203\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"ssvcData\":{\"timestamp\":\"2026-11-04T23:00:38.538587Z\",\"id\":\"CVE-2026-119300\",\"options\":[{\"exploitation\":\"poc\"},{\"automatable\":\"no\"},{\"technicalImpact\":\"partial\"}],\"role\":\"CISA Coordinator\",\"version\":\"2.0.3\"}}]},\"weaknesses\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-1333\"}]}],\"references\":[{\"url\":\"https://github.com/wekan/wekan/commit/4ce5cf6e102854d326e1dcacde6cd20614525dec\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://github.com/wekan/wekan/releases/tag/v11.11\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://github.com/wekan/wekan/security/advisories/GHSA-9846-cj96-6hv5\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://github.com/wekan/wekan/security/advisories/GHSA-9846-cj96-6hv5\",\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\"}]}}",
"vulnrichment": {
"containers": "{\"cna\": {\"title\": \"Wekan: ReDoS via Unescaped User Input in RegExp\", \"problemTypes\": [{\"descriptions\": [{\"cweId\": \"CWE-1333\", \"lang\": \"en\", \"description\": \"CWE-1333: Inefficient Regular Expression Complexity\", \"type\": \"CWE\"}]}], \"metrics\": [{\"cvssV3_1\": {\"attackComplexity\": \"LOW\", \"attackVector\": \"NETWORK\", \"availabilityImpact\": \"HIGH\", \"baseScore\": 6.5, \"baseSeverity\": \"MEDIUM\", \"confidentialityImpact\": \"NONE\", \"integrityImpact\": \"NONE\", \"privilegesRequired\": \"LOW\", \"scope\": \"UNCHANGED\", \"userInteraction\": \"NONE\", \"vectorString\": \"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\", \"version\": \"3.1\"}}], \"references\": [{\"name\": \"https://github.com/wekan/wekan/security/advisories/GHSA-9846-cj96-6hv5\", \"tags\": [\"x_refsource_CONFIRM\"], \"url\": \"https://github.com/wekan/wekan/security/advisories/GHSA-9846-cj96-6hv5\"}, {\"name\": \"https://github.com/wekan/wekan/commit/4ce5cf6e102854d326e1dcacde6cd20614525dec\", \"tags\": [\"x_refsource_MISC\"], \"url\": \"https://github.com/wekan/wekan/commit/4ce5cf6e102854d326e1dcacde6cd20614525dec\"}, {\"name\": \"https://github.com/wekan/wekan/releases/tag/v11.11\", \"tags\": [\"x_refsource_MISC\"], \"url\": \"https://github.com/wekan/wekan/releases/tag/v11.11\"}], \"affected\": [{\"vendor\": \"wekan\", \"product\": \"wekan\", \"versions\": [{\"version\": \"< 11.11\", \"status\": \"affected\"}]}], \"providerMetadata\": {\"orgId\": \"a0819718-46f1-4df5-94e2-005712e83aaa\", \"shortName\": \"GitHub_M\", \"dateUpdated\": \"2026-10-30T16:29:16.786Z\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"Wekan is open source kanban built with Meteor. Prior to 11.11, the user-search publication in server/publications/users.js and the searchUsers method in server/models/users.js pass authenticated user-controlled searchTerm and query values to new RegExp() without escaping regular-expression metacharacters. MongoDB-backed deployments evaluate the resulting patterns with PCRE2, allowing a logged-in user to submit catastrophic-backtracking expressions that consume database CPU and degrade or deny service to other users; searchUsers additionally requires board membership or site-admin status. The FerretDB v1 / RE2 unaffected configuration is not practically affected by catastrophic backtracking. This issue is fixed in version 11.11.\"}], \"source\": {\"advisory\": \"GHSA-9846-cj96-6hv5\", \"discovery\": \"UNKNOWN\"}}, \"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2026-119300\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"poc\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-11-04T23:00:38.538587Z\"}}}], \"references\": [{\"url\": \"https://github.com/wekan/wekan/security/advisories/GHSA-9846-cj96-6hv5\", \"tags\": [\"exploit\"]}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-11-04T23:00:56.118Z\"}}]}",
"cveMetadata": "{\"cveId\": \"CVE-2026-119300\", \"assignerOrgId\": \"a0819718-46f1-4df5-94e2-005712e83aaa\", \"state\": \"PUBLISHED\", \"assignerShortName\": \"GitHub_M\", \"dateReserved\": \"2026-10-29T18:50:28.066Z\", \"datePublished\": \"2026-10-30T16:29:16.786Z\", \"dateUpdated\": \"2026-11-04T23:01:02.327Z\"}",
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
},
"x_gcve": [
{
"extensions": {
"bcp-05-x-01": {
"ai_annotations": [
{
"ai_level": "generated",
"description": "VLAI severity classification was generated by Vulnerability-Lookup's /vlai/severity-classification API endpoint based on vulnerability description text.",
"field_name": "x_gcve.extensions.vlai-severity-enrichment",
"models": [
{
"gna_source": 1,
"identifier": "vlai-severity-classification",
"name": "VLAI Severity",
"provider": "CIRCL",
"version": "fc530b2263ef5a89ae4c75ffcbf6b4d878d44b94"
}
],
"review_status": "none",
"scope": "field",
"tags": [
"ai-computer-assisted:assistance-level=\"ai-generated\"",
"ai-computer-assisted:review-level=\"unreviewed\""
]
}
]
},
"vlai-severity-enrichment": {
"confidence": 0.7419322729110718,
"generated_at": "2026-11-05T00:25:10+00:00",
"severity": "Medium",
"vulnerability_id": "CVE-2026-119300"
}
}
}
]
}