UnratedFix available
curl: Fix of CVE-2026-11856
Type: advisorySources: OSV
- CVE-2026-11856: flush cached HTTP Digest auth state when the origin or credentials change on the same easy handle so a challenge computed for one origin or set of credentials is not reused for another
- Products
- curl, curl-minimal, libcurl, libcurl-devel, libcurl-minimal
- Affected versions
- Not specified
- Fixed versions
- 7.76.1-31.el9_2.1.tuxcare.els13
- CVEs
- CVE-2026-11856
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 10:41 UTC · Revision 1
Source evidence
- CVE-2026-11856: flush cached HTTP Digest auth state when the origin or credentials change on the same easy handle so a challenge computed for one origin or set of credentials is not reused for another
osv:CLSA-2026-1783705168
curl
Fixed versions: 7.76.1-31.el9_2.1.tuxcare.els13
curl-minimal
Fixed versions: 7.76.1-31.el9_2.1.tuxcare.els13
libcurl
Fixed versions: 7.76.1-31.el9_2.1.tuxcare.els13
libcurl-devel
Fixed versions: 7.76.1-31.el9_2.1.tuxcare.els13
libcurl-minimal
Fixed versions: 7.76.1-31.el9_2.1.tuxcare.els13
Complete source record
{
"id": "188f763d824e252eda0662d94ca299b1862477894a4d7ed5f8ac2041b9d8b0bc",
"url": "https://osv.dev/vulnerability/CLSA-2026-1783705168",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "curl: Fix of CVE-2026-11856",
"summary": "- CVE-2026-11856: flush cached HTTP Digest auth state when the origin or credentials change on the same easy handle so a challenge computed for one origin or set of credentials is not reused for another",
"evidence": "osv:CLSA-2026-1783705168",
"products": [
{
"name": {
"value": "curl",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "7.76.1-31.el9_2.1.tuxcare.els13",
"evidence": "/affected/0/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "curl-minimal",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "7.76.1-31.el9_2.1.tuxcare.els13",
"evidence": "/affected/1/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "libcurl",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "7.76.1-31.el9_2.1.tuxcare.els13",
"evidence": "/affected/2/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "libcurl-devel",
"evidence": "/affected/3/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "7.76.1-31.el9_2.1.tuxcare.els13",
"evidence": "/affected/3/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "libcurl-minimal",
"evidence": "/affected/4/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "7.76.1-31.el9_2.1.tuxcare.els13",
"evidence": "/affected/4/ranges"
}
],
"affected_versions": []
}
],
"severity": "unknown",
"structured": {
"id": "CLSA-2026-1783705168",
"aliases": [
"CLSA-2026-1783705168"
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "7.76.1-31.el9_2.1.tuxcare.els13"
}
]
}
],
"package": {
"name": "curl",
"purl": "pkg:rpm/tuxcare/curl?distro=almalinux-9.2",
"ecosystem": "TuxCare:AlmaLinux:9.2"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/almalinux9.2esu/CLSA-2026-1783705168.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "7.76.1-31.el9_2.1.tuxcare.els13"
}
]
}
],
"package": {
"name": "curl-minimal",
"purl": "pkg:rpm/tuxcare/curl-minimal?distro=almalinux-9.2",
"ecosystem": "TuxCare:AlmaLinux:9.2"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/almalinux9.2esu/CLSA-2026-1783705168.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "7.76.1-31.el9_2.1.tuxcare.els13"
}
]
}
],
"package": {
"name": "libcurl",
"purl": "pkg:rpm/tuxcare/libcurl?distro=almalinux-9.2",
"ecosystem": "TuxCare:AlmaLinux:9.2"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/almalinux9.2esu/CLSA-2026-1783705168.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "7.76.1-31.el9_2.1.tuxcare.els13"
}
]
}
],
"package": {
"name": "libcurl-devel",
"purl": "pkg:rpm/tuxcare/libcurl-devel?distro=almalinux-9.2",
"ecosystem": "TuxCare:AlmaLinux:9.2"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/almalinux9.2esu/CLSA-2026-1783705168.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "7.76.1-31.el9_2.1.tuxcare.els13"
}
]
}
],
"package": {
"name": "libcurl-minimal",
"purl": "pkg:rpm/tuxcare/libcurl-minimal?distro=almalinux-9.2",
"ecosystem": "TuxCare:AlmaLinux:9.2"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/almalinux9.2esu/CLSA-2026-1783705168.json"
}
}
],
"modified": "2026-10-26T09:30:25.750964631Z",
"provider": "osv",
"upstream": [
"CVE-2026-11856"
],
"references": [
"https://errata.tuxcare.com/els_os/almalinux9.2esu/CLSA-2026-1783705168.html",
"https://nvd.nist.gov/vuln/detail/CVE-2026-11856"
]
},
"related_cves": [
{
"value": "CVE-2026-11856",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": null
},
"source_id": "core-osv",
"document_id": 447040,
"published_at": "2026-07-10T17:39:54+00:00"
}