UnratedFix available
cyrus-imapd: Fix of CVE-2026-61915
Type: advisorySources: OSV
- use strcmpsafe/strncmpsafe for VPATCH PATCHACTION string matching: icalproperty_get_value_as_string() returns NULL for a property parsed with an empty value, so a VPATCH carrying 'SUMMARY;PATCH-ACTION=BYVALUE:' crashed the httpd worker on the same authenticated CalDAV path as CVE-2026-61915
- Products
- cyrus-imapd, cyrus-imapd-devel, cyrus-imapd-doc-extra, cyrus-imapd-utils, cyrus-imapd-vzic
- Affected versions
- Not specified
- Fixed versions
- 3.0.7-23.el8.tuxcare.els2
- CVEs
- CVE-2026-61915
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 11:17 UTC · Revision 1
Source evidence
- use strcmpsafe/strncmpsafe for VPATCH PATCHACTION string matching: icalproperty_get_value_as_string() returns NULL for a property parsed with an empty value, so a VPATCH carrying 'SUMMARY;PATCH-ACTION=BYVALUE:' crashed the httpd worker on the same authenticated CalDAV path as CVE-2026-61915
osv:CLSA-2026-1790764490
cyrus-imapd
Fixed versions: 3.0.7-23.el8.tuxcare.els2
cyrus-imapd-devel
Fixed versions: 3.0.7-23.el8.tuxcare.els2
cyrus-imapd-doc-extra
Fixed versions: 3.0.7-23.el8.tuxcare.els2
cyrus-imapd-utils
Fixed versions: 3.0.7-23.el8.tuxcare.els2
cyrus-imapd-vzic
Fixed versions: 3.0.7-23.el8.tuxcare.els2
Complete source record
{
"id": "ba81e3b491a9358d5dbfd1299d860e845a7315ec86bd62902b4b0f1b78233a4e",
"url": "https://osv.dev/vulnerability/CLSA-2026-1790764490",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "cyrus-imapd: Fix of CVE-2026-61915",
"summary": "- use strcmpsafe/strncmpsafe for VPATCH PATCHACTION string matching: icalproperty_get_value_as_string() returns NULL for a property parsed with an empty value, so a VPATCH carrying 'SUMMARY;PATCH-ACTION=BYVALUE:' crashed the httpd worker on the same authenticated CalDAV path as CVE-2026-61915",
"evidence": "osv:CLSA-2026-1790764490",
"products": [
{
"name": {
"value": "cyrus-imapd",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "3.0.7-23.el8.tuxcare.els2",
"evidence": "/affected/0/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "cyrus-imapd-devel",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "3.0.7-23.el8.tuxcare.els2",
"evidence": "/affected/1/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "cyrus-imapd-doc-extra",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "3.0.7-23.el8.tuxcare.els2",
"evidence": "/affected/2/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "cyrus-imapd-utils",
"evidence": "/affected/3/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "3.0.7-23.el8.tuxcare.els2",
"evidence": "/affected/3/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "cyrus-imapd-vzic",
"evidence": "/affected/4/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "3.0.7-23.el8.tuxcare.els2",
"evidence": "/affected/4/ranges"
}
],
"affected_versions": []
}
],
"severity": "unknown",
"structured": {
"id": "CLSA-2026-1790764490",
"aliases": [
"CLSA-2026-1790764490"
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "3.0.7-23.el8.tuxcare.els2"
}
]
}
],
"package": {
"name": "cyrus-imapd",
"purl": "pkg:rpm/tuxcare/cyrus-imapd?distro=centos-8.5",
"ecosystem": "TuxCare:CentOS:8.5"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/centos8.5els/CLSA-2026-1790764490.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "3.0.7-23.el8.tuxcare.els2"
}
]
}
],
"package": {
"name": "cyrus-imapd-devel",
"purl": "pkg:rpm/tuxcare/cyrus-imapd-devel?distro=centos-8.5",
"ecosystem": "TuxCare:CentOS:8.5"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/centos8.5els/CLSA-2026-1790764490.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "3.0.7-23.el8.tuxcare.els2"
}
]
}
],
"package": {
"name": "cyrus-imapd-doc-extra",
"purl": "pkg:rpm/tuxcare/cyrus-imapd-doc-extra?distro=centos-8.5",
"ecosystem": "TuxCare:CentOS:8.5"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/centos8.5els/CLSA-2026-1790764490.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "3.0.7-23.el8.tuxcare.els2"
}
]
}
],
"package": {
"name": "cyrus-imapd-utils",
"purl": "pkg:rpm/tuxcare/cyrus-imapd-utils?distro=centos-8.5",
"ecosystem": "TuxCare:CentOS:8.5"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/centos8.5els/CLSA-2026-1790764490.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "3.0.7-23.el8.tuxcare.els2"
}
]
}
],
"package": {
"name": "cyrus-imapd-vzic",
"purl": "pkg:rpm/tuxcare/cyrus-imapd-vzic?distro=centos-8.5",
"ecosystem": "TuxCare:CentOS:8.5"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/centos8.5els/CLSA-2026-1790764490.json"
}
}
],
"modified": "2026-10-26T09:31:51.716834103Z",
"provider": "osv",
"upstream": [
"CVE-2026-61915"
],
"references": [
"https://errata.tuxcare.com/els_os/centos8.5els/CLSA-2026-1790764490.html"
]
},
"related_cves": [
{
"value": "CVE-2026-61915",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": null
},
"source_id": "core-osv",
"document_id": 448731,
"published_at": "2026-09-30T10:34:59+00:00"
}