Exploitation evidence
Not listed in the latest downloaded CISA KEV catalog. This does not establish an absence of exploitation.
KEV checked 13 Nov 2026, 00:20 Jerusalem · Original catalog ↗Reported products and versions
hapijs / joi
Default status: Not specified
- affected: >= 16.0.0, <= 17.1.1
- affected: >= 18.0.0, < 18.3.1
@hapi / joi
Default status: Not specified
- affected: >= 16.0.0, <= 17.1.1
Fixes and workarounds
No explicit solution text in the downloaded CVE record. Consult the vendor advisory; unaffected version ranges are shown above as reported, not inferred as a patch recommendation.
Sources and related reporting
CVE Program record ↗ · Download tracked evidence as JSON
- https://github.com/hapijs/joi/security/advisories/GHSA-4528-x5fx-h6hg
- https://github.com/hapijs/joi/pull/3162
- https://github.com/hapijs/joi/pull/3163
- https://github.com/hapijs/joi/commit/03dc1d909818503b06240dadc81e9227ed2649cf
- https://github.com/hapijs/joi/commit/807858d7480f5075b0610817e3e44230890fb18e
- https://github.com/hapijs/joi/releases/tag/v17.13.9
- https://github.com/hapijs/joi/releases/tag/v18.3.1
Monitored source mentions
Shared CVE identifiers link source mentions; they do not establish that the reports describe the same incident.
Observed change timeline
History begins when Egret first downloads each source. It is not the complete upstream CVE history.
12 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-12",
"epss": 0.00467,
"percentile": 0.40937
}10 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-10",
"epss": 0.00467,
"percentile": 0.40763
}09 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-09",
"epss": 0.00467,
"percentile": 0.40717
}08 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-08",
"epss": 0.00467,
"percentile": 0.40704
}07 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-07",
"epss": 0.00467,
"percentile": 0.40681
}06 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-06",
"epss": 0.00467,
"percentile": 0.40622
}06 Nov 2026, 06:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-05",
"epss": 0.00467,
"percentile": 0.40595
}04 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-04",
"epss": 0.00467,
"percentile": 0.40568
}04 Nov 2026, 12:20 Jerusalem · CVE Program record changed
Stored CNA snapshot at this observation.
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-118772",
"options": [
{
"Exploitation": "poc"
},
{
"Automatable": "yes"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-11-04T01:33:26.811594Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-11-04T01:33:51.841Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"references": [
{
"tags": [
"exploit"
],
"url": "https://github.com/hapijs/joi/security/advisories/GHSA-4528-x5fx-h6hg"
}
],
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"product": "joi",
"vendor": "hapijs",
"versions": [
{
"status": "affected",
"version": ">= 16.0.0, <= 17.1.1"
},
{
"status": "affected",
"version": ">= 18.0.0, < 18.3.1"
}
]
},
{
"product": "joi",
"vendor": "@hapi",
"versions": [
{
"status": "affected",
"version": ">= 16.0.0, <= 17.1.1"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "joi is a schema description language and data validator for JavaScript. From 17.1.1 until 17.13.9 and 18.3.1, the Joi.string().email({ multiple: true }) rule uses a separator regular expression whose leading whitespace quantifier is retried at every position in a long whitespace run that contains no separator, causing quadratic work during String.prototype.split. The behavior applies to the default separator and every custom separator. Applications that validate attacker-controlled values with the multiple option and no effective prior length limit can have the Node.js event loop blocked for seconds by one request, preventing other work. A .max() rule is not sufficient when abortEarly: false allows the email rule to run after the maximum-length check fails. This vulnerability is fixed in versions 17.13.9 and 18.3.1."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/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": "2026-10-29T18:13:33.771Z",
"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"shortName": "GitHub_M"
},
"references": [
{
"name": "https://github.com/hapijs/joi/security/advisories/GHSA-4528-x5fx-h6hg",
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://github.com/hapijs/joi/security/advisories/GHSA-4528-x5fx-h6hg"
},
{
"name": "https://github.com/hapijs/joi/pull/3162",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/hapijs/joi/pull/3162"
},
{
"name": "https://github.com/hapijs/joi/pull/3163",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/hapijs/joi/pull/3163"
},
{
"name": "https://github.com/hapijs/joi/commit/03dc1d909818503b06240dadc81e9227ed2649cf",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/hapijs/joi/commit/03dc1d909818503b06240dadc81e9227ed2649cf"
},
{
"name": "https://github.com/hapijs/joi/commit/807858d7480f5075b0610817e3e44230890fb18e",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/hapijs/joi/commit/807858d7480f5075b0610817e3e44230890fb18e"
},
{
"name": "https://github.com/hapijs/joi/releases/tag/v17.13.9",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/hapijs/joi/releases/tag/v17.13.9"
},
{
"name": "https://github.com/hapijs/joi/releases/tag/v18.3.1",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/hapijs/joi/releases/tag/v18.3.1"
}
],
"source": {
"advisory": "GHSA-4528-x5fx-h6hg",
"discovery": "UNKNOWN"
},
"title": "joi: quadratic-time split in `string().email({ multiple: true })` allows denial of service"
}
},
"cveMetadata": {
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"assignerShortName": "GitHub_M",
"cveId": "CVE-2026-118772",
"datePublished": "2026-10-29T18:13:33.771Z",
"dateReserved": "2026-10-28T19:20:05.018Z",
"dateUpdated": "2026-11-04T01:33:51.841Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}03 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-03",
"epss": 0.00467,
"percentile": 0.40493
}03 Nov 2026, 06:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-02",
"epss": 0.00467,
"percentile": 0.40442
}03 Nov 2026, 06:20 Jerusalem · CVE Program record changed
Stored CNA snapshot at this observation.
{
"containers": {
"cna": {
"affected": [
{
"product": "joi",
"vendor": "hapijs",
"versions": [
{
"status": "affected",
"version": ">= 16.0.0, <= 17.1.1"
},
{
"status": "affected",
"version": ">= 18.0.0, < 18.3.1"
}
]
},
{
"product": "joi",
"vendor": "@hapi",
"versions": [
{
"status": "affected",
"version": ">= 16.0.0, <= 17.1.1"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "joi is a schema description language and data validator for JavaScript. From 17.1.1 until 17.13.9 and 18.3.1, the Joi.string().email({ multiple: true }) rule uses a separator regular expression whose leading whitespace quantifier is retried at every position in a long whitespace run that contains no separator, causing quadratic work during String.prototype.split. The behavior applies to the default separator and every custom separator. Applications that validate attacker-controlled values with the multiple option and no effective prior length limit can have the Node.js event loop blocked for seconds by one request, preventing other work. A .max() rule is not sufficient when abortEarly: false allows the email rule to run after the maximum-length check fails. This vulnerability is fixed in versions 17.13.9 and 18.3.1."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
}
}
],
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{
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{
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"description": "CWE-1333: Inefficient Regular Expression Complexity",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
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"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
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},
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{
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"tags": [
"x_refsource_CONFIRM"
],
"url": "https://github.com/hapijs/joi/security/advisories/GHSA-4528-x5fx-h6hg"
},
{
"name": "https://github.com/hapijs/joi/pull/3162",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/hapijs/joi/pull/3162"
},
{
"name": "https://github.com/hapijs/joi/pull/3163",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/hapijs/joi/pull/3163"
},
{
"name": "https://github.com/hapijs/joi/commit/03dc1d909818503b06240dadc81e9227ed2649cf",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/hapijs/joi/commit/03dc1d909818503b06240dadc81e9227ed2649cf"
},
{
"name": "https://github.com/hapijs/joi/commit/807858d7480f5075b0610817e3e44230890fb18e",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/hapijs/joi/commit/807858d7480f5075b0610817e3e44230890fb18e"
},
{
"name": "https://github.com/hapijs/joi/releases/tag/v17.13.9",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/hapijs/joi/releases/tag/v17.13.9"
},
{
"name": "https://github.com/hapijs/joi/releases/tag/v18.3.1",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/hapijs/joi/releases/tag/v18.3.1"
}
],
"source": {
"advisory": "GHSA-4528-x5fx-h6hg",
"discovery": "UNKNOWN"
},
"title": "joi: quadratic-time split in `string().email({ multiple: true })` allows denial of service"
}
},
"cveMetadata": {
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"assignerShortName": "GitHub_M",
"cveId": "CVE-2026-118772",
"datePublished": "2026-10-29T18:13:33.771Z",
"dateReserved": "2026-10-28T19:20:05.018Z",
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"state": "PUBLISHED"
},
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