CVE-2026-40592 (GCVE-0-2026-40592)
Vulnerability from cvelistv5
Published
2026-04-21 16:57
Modified
2026-04-21 16:57
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-862 - Missing Authorization
Summary
FreeScout is a free self-hosted help desk and shared mailbox. Prior to version 1.8.214, the undo-send route `GET /conversation/undo-reply/{thread_id}` checks only whether the current user can view the parent conversation. It does not verify that the current user created the reply being undone. In a shared mailbox, one agent can therefore recall another agent's just-sent reply during the 15-second undo window. Version 1.8.214 fixes the vulnerability.
References
| URL | Tags | |
|---|---|---|
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Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| freescout-help-desk | freescout |
Version: < 1.8.214 |
{
"containers": {
"cna": {
"affected": [
{
"product": "freescout",
"vendor": "freescout-help-desk",
"versions": [
{
"status": "affected",
"version": "\u003c 1.8.214"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "FreeScout is a free self-hosted help desk and shared mailbox. Prior to version 1.8.214, the undo-send route `GET /conversation/undo-reply/{thread_id}` checks only whether the current user can view the parent conversation. It does not verify that the current user created the reply being undone. In a shared mailbox, one agent can therefore recall another agent\u0027s just-sent reply during the 15-second undo window. Version 1.8.214 fixes the vulnerability."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "HIGH",
"attackVector": "NETWORK",
"availabilityImpact": "LOW",
"baseScore": 5.9,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:L",
"version": "3.1"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-862",
"description": "CWE-862: Missing Authorization",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-04-21T16:57:33.146Z",
"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"shortName": "GitHub_M"
},
"references": [
{
"name": "https://github.com/freescout-help-desk/freescout/security/advisories/GHSA-674v-r6xp-mvp6",
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://github.com/freescout-help-desk/freescout/security/advisories/GHSA-674v-r6xp-mvp6"
},
{
"name": "https://github.com/freescout-help-desk/freescout/commit/c779afdda86fa00a4b85779e034bbfd9ce20c76d",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/freescout-help-desk/freescout/commit/c779afdda86fa00a4b85779e034bbfd9ce20c76d"
},
{
"name": "https://github.com/freescout-help-desk/freescout/releases/tag/1.8.214",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/freescout-help-desk/freescout/releases/tag/1.8.214"
}
],
"source": {
"advisory": "GHSA-674v-r6xp-mvp6",
"discovery": "UNKNOWN"
},
"title": "FreeScout\u0027s cross-user undo reply allows mailbox peers to recall another agent\u0027s outbound reply"
}
},
"cveMetadata": {
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"assignerShortName": "GitHub_M",
"cveId": "CVE-2026-40592",
"datePublished": "2026-04-21T16:57:33.146Z",
"dateReserved": "2026-04-14T14:07:59.641Z",
"dateUpdated": "2026-04-21T16:57:33.146Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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