High
Quasar Framework: SSR/SSG dev error page discloses the full shell environment and its escape is bypassable
Type: advisorySources: OSV
Quasar Framework is a framework for building high-performance Vue.js user interfaces. Prior to @quasar/render-ssr-error 2.2.4 and @quasar/app-vite 3.3.0, renderSSRError() in utils/render-ssr-error/src/index.js used diagnostic data from utils/render-ssr-error/src/env.js to serialize process.env, request headers, and cookies into the HTTP page returned by serve.devError(), while the development server listened on all interfaces by default. Any network-adjacent client that reaches an SSR or SSG render failure through this development-only error path can obtain shell environment secrets. The renderer escaped only one exact lowercase script closing-tag spelling, so case variants and valid closing-tag delimiter variants in reflected diagnostic data could terminate the script element and inject markup; executing the injected code in a developer browser additionally requires the payload to accompany that developer's request. This issue is fixed in @quasar/render-ssr-error 2.2.4 and @quasar/app-vite 3.3.0.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2026-106106
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 7 Nov 2026, 09:16 UTC · Revision 1
Source evidence
Quasar Framework: SSR/SSG dev error page discloses the full shell environment and its escape is bypassable
core-osv · Original sourcePublished 6 Oct 2026, 17:24 UTC
Quasar Framework is a framework for building high-performance Vue.js user interfaces. Prior to @quasar/render-ssr-error 2.2.4 and @quasar/app-vite 3.3.0, renderSSRError() in utils/render-ssr-error/src/index.js used diagnostic data from utils/render-ssr-error/src/env.js to serialize process.env, request headers, and cookies into the HTTP page returned by serve.devError(), while the development server listened on all interfaces by default. Any network-adjacent client that reaches an SSR or SSG render failure through this development-only error path can obtain shell environment secrets. The renderer escaped only one exact lowercase script closing-tag spelling, so case variants and valid closing-tag delimiter variants in reflected diagnostic data could terminate the script element and inject markup; executing the injected code in a developer browser additionally requires the payload to accompany that developer's request. This issue is fixed in @quasar/render-ssr-error 2.2.4 and @quasar/app-vite 3.3.0.
osv:CVE-2026-106106
Complete source record
{
"id": "d2c4dd72a837359982e9c42d37bd102e5cfdd0a356e11865b47277523bc9f20f",
"url": "https://osv.dev/vulnerability/CVE-2026-106106",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "Quasar Framework: SSR/SSG dev error page discloses the full shell environment and its escape is bypassable",
"summary": "Quasar Framework is a framework for building high-performance Vue.js user interfaces. Prior to @quasar/render-ssr-error 2.2.4 and @quasar/app-vite 3.3.0, renderSSRError() in utils/render-ssr-error/src/index.js used diagnostic data from utils/render-ssr-error/src/env.js to serialize process.env, request headers, and cookies into the HTTP page returned by serve.devError(), while the development server listened on all interfaces by default. Any network-adjacent client that reaches an SSR or SSG render failure through this development-only error path can obtain shell environment secrets. The renderer escaped only one exact lowercase script closing-tag spelling, so case variants and valid closing-tag delimiter variants in reflected diagnostic data could terminate the script element and inject markup; executing the injected code in a developer browser additionally requires the payload to accompany that developer's request. This issue is fixed in @quasar/render-ssr-error 2.2.4 and @quasar/app-vite 3.3.0.",
"evidence": "osv:CVE-2026-106106",
"products": [],
"severity": "high",
"structured": {
"id": "CVE-2026-106106",
"aliases": [
"CVE-2026-106106",
"GHSA-r5mf-4r5x-q78f"
],
"metrics": [
{
"type": "CVSS_V4",
"score": "CVSS:4.0/AV:A/AC:H/AT:P/PR:N/UI:P/VC:H/VI:L/VA:N/SC:H/SI:H/SA:N"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/quasarframework/quasar",
"type": "GIT",
"events": [
{
"introduced": "0"
},
{
"fixed": "db082a4407936be7865c7c85dd1862bb213f0c08"
},
{
"fixed": "ba5bd096d06a884878d6b3e8b3bc38ee3ef738f2"
},
{
"fixed": "605f4da74c54bd3c3f3a22350396ca8c1ee0e084"
},
{
"fixed": "61c2bd8a607785fdade72cce20e8faf1de7eee15"
}
],
"database_specific": {
"extracted_events": [
{
"range": [
{
"introduced": "0"
},
{
"fixed": "2.23.3"
}
],
"source": "AFFECTED_FIELD",
"strategy": "StringRangeExpression"
},
{
"range": [
{
"introduced": "0"
},
{
"fixed": "2.2.4"
}
],
"source": "AFFECTED_FIELD",
"strategy": "StringRangeExpression"
},
{
"range": [
{
"introduced": "0"
},
{
"fixed": "3.3.0"
}
],
"source": "AFFECTED_FIELD",
"strategy": "StringRangeExpression"
},
{
"range": [
{
"fixed": "61c2bd8a607785fdade72cce20e8faf1de7eee15"
}
],
"source": "REFERENCES_COMMIT"
}
]
}
}
],
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],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-106106.json"
}
}
],
"modified": "2026-10-28T02:30:50.573455099Z",
"provider": "osv",
"references": [
"https://github.com/quasarframework/quasar/releases/tag/@quasar/app-vite-v3.3.0",
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/106xxx/CVE-2026-106106.json",
"https://github.com/quasarframework/quasar/security/advisories/GHSA-r5mf-4r5x-q78f",
"https://nvd.nist.gov/vuln/detail/CVE-2026-106106",
"https://github.com/quasarframework/quasar/commit/61c2bd8a607785fdade72cce20e8faf1de7eee15"
],
"provider_metadata": {
"cwe_ids": [
"CWE-497",
"CWE-79"
],
"cna_assigner": "GitHub_M",
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/106xxx/CVE-2026-106106.json"
}
},
"related_cves": [
{
"value": "CVE-2026-106106",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 518856,
"published_at": "2026-10-06T17:24:07.788+00:00"
}