MediumFix available
php-guzzlehttp-psr7 — security advisory
guzzlehttp/psr7 is a PSR-7 HTTP message library implementation in PHP. Prior to 2.12.3, Uri::assertValidHost() does not reject URI host components containing authority delimiters, embedded ports, or malformed IPv6 brackets, allowing Uri::getHost() to disagree with the URI authority used for security or routing decisions. This issue is fixed in version 2.12.3.
- Products
- php-guzzlehttp-psr7
- Affected versions
- 2.10.3-1, 2.10.4-1, 2.11.0-1, 2.12.0-1, 2.12.1-1, 2.12.3-1, 2.12.4-1, 2.12.5-1, 2.13.0-1, 2.13.1-1, 2.4.5-1, 2.4.5-1+deb12u1, 2.5.0-1, 2.6.0-1, 2.6.1-1, 2.6.2-1, 2.6.2-2, 2.6.2-3, 2.7.0-1, 2.7.0-2, 2.7.0-3, 2.7.1-1, 2.7.1-1+deb13u1, 2.7.1-1+deb13u2, 2.8.0-1, 2.8.0-2, 2.9.0-1, 2.9.0-2, 3.0.0-1, 3.1.0-1, 3.2.0-1
- Fixed versions
- 2.12.3-1
- CVEs
- CVE-2026-59882
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 12:57 UTC · Revision 2
Source evidence
guzzlehttp/psr7 is a PSR-7 HTTP message library implementation in PHP. Prior to 2.12.3, Uri::assertValidHost() does not reject URI host components containing authority delimiters, embedded ports, or malformed IPv6 brackets, allowing Uri::getHost() to disagree with the URI authority used for security or routing decisions. This issue is fixed in version 2.12.3.
osv:DEBIAN-CVE-2026-59882
php-guzzlehttp-psr7
Fixed versions: Not specified
php-guzzlehttp-psr7
Fixed versions: Not specified
php-guzzlehttp-psr7
Fixed versions: 2.12.3-1
Complete source record
{
"id": "2e2962ae390171df51b5763cd37db3e469588beff172e511cca66bb099c73302",
"url": "https://osv.dev/vulnerability/DEBIAN-CVE-2026-59882",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "DEBIAN-CVE-2026-59882",
"summary": "guzzlehttp/psr7 is a PSR-7 HTTP message library implementation in PHP. Prior to 2.12.3, Uri::assertValidHost() does not reject URI host components containing authority delimiters, embedded ports, or malformed IPv6 brackets, allowing Uri::getHost() to disagree with the URI authority used for security or routing decisions. This issue is fixed in version 2.12.3.",
"evidence": "osv:DEBIAN-CVE-2026-59882",
"products": [
{
"name": {
"value": "php-guzzlehttp-psr7",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "2.10.3-1",
"evidence": "/affected/0/versions"
},
{
"value": "2.10.4-1",
"evidence": "/affected/0/versions"
},
{
"value": "2.11.0-1",
"evidence": "/affected/0/versions"
},
{
"value": "2.12.0-1",
"evidence": "/affected/0/versions"
},
{
"value": "2.12.1-1",
"evidence": "/affected/0/versions"
},
{
"value": "2.12.3-1",
"evidence": "/affected/0/versions"
},
{
"value": "2.12.4-1",
"evidence": "/affected/0/versions"
},
{
"value": "2.12.5-1",
"evidence": "/affected/0/versions"
},
{
"value": "2.13.0-1",
"evidence": "/affected/0/versions"
},
{
"value": "2.13.1-1",
"evidence": "/affected/0/versions"
},
{
"value": "2.4.5-1",
"evidence": "/affected/0/versions"
},
{
"value": "2.4.5-1+deb12u1",
"evidence": "/affected/0/versions"
},
{
"value": "2.5.0-1",
"evidence": "/affected/0/versions"
},
{
"value": "2.6.0-1",
"evidence": "/affected/0/versions"
},
{
"value": "2.6.1-1",
"evidence": "/affected/0/versions"
},
{
"value": "2.6.2-1",
"evidence": "/affected/0/versions"
},
{
"value": "2.6.2-2",
"evidence": "/affected/0/versions"
},
{
"value": "2.6.2-3",
"evidence": "/affected/0/versions"
},
{
"value": "2.7.0-1",
"evidence": "/affected/0/versions"
},
{
"value": "2.7.0-2",
"evidence": "/affected/0/versions"
},
{
"value": "2.7.0-3",
"evidence": "/affected/0/versions"
},
{
"value": "2.7.1-1",
"evidence": "/affected/0/versions"
},
{
"value": "2.8.0-1",
"evidence": "/affected/0/versions"
},
{
"value": "2.8.0-2",
"evidence": "/affected/0/versions"
},
{
"value": "2.9.0-1",
"evidence": "/affected/0/versions"
},
{
"value": "2.9.0-2",
"evidence": "/affected/0/versions"
},
{
"value": "3.0.0-1",
"evidence": "/affected/0/versions"
},
{
"value": "3.1.0-1",
"evidence": "/affected/0/versions"
},
{
"value": "3.2.0-1",
"evidence": "/affected/0/versions"
}
]
},
{
"name": {
"value": "php-guzzlehttp-psr7",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "2.10.3-1",
"evidence": "/affected/1/versions"
},
{
"value": "2.10.4-1",
"evidence": "/affected/1/versions"
},
{
"value": "2.11.0-1",
"evidence": "/affected/1/versions"
},
{
"value": "2.12.0-1",
"evidence": "/affected/1/versions"
},
{
"value": "2.12.1-1",
"evidence": "/affected/1/versions"
},
{
"value": "2.12.3-1",
"evidence": "/affected/1/versions"
},
{
"value": "2.12.4-1",
"evidence": "/affected/1/versions"
},
{
"value": "2.12.5-1",
"evidence": "/affected/1/versions"
},
{
"value": "2.13.0-1",
"evidence": "/affected/1/versions"
},
{
"value": "2.13.1-1",
"evidence": "/affected/1/versions"
},
{
"value": "2.7.1-1",
"evidence": "/affected/1/versions"
},
{
"value": "2.7.1-1+deb13u1",
"evidence": "/affected/1/versions"
},
{
"value": "2.7.1-1+deb13u2",
"evidence": "/affected/1/versions"
},
{
"value": "2.8.0-1",
"evidence": "/affected/1/versions"
},
{
"value": "2.8.0-2",
"evidence": "/affected/1/versions"
},
{
"value": "2.9.0-1",
"evidence": "/affected/1/versions"
},
{
"value": "2.9.0-2",
"evidence": "/affected/1/versions"
},
{
"value": "3.0.0-1",
"evidence": "/affected/1/versions"
},
{
"value": "3.1.0-1",
"evidence": "/affected/1/versions"
},
{
"value": "3.2.0-1",
"evidence": "/affected/1/versions"
}
]
},
{
"name": {
"value": "php-guzzlehttp-psr7",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "2.12.3-1",
"evidence": "/affected/2/ranges"
}
],
"affected_versions": [
{
"value": "2.10.3-1",
"evidence": "/affected/2/versions"
},
{
"value": "2.10.4-1",
"evidence": "/affected/2/versions"
},
{
"value": "2.11.0-1",
"evidence": "/affected/2/versions"
},
{
"value": "2.12.0-1",
"evidence": "/affected/2/versions"
},
{
"value": "2.12.1-1",
"evidence": "/affected/2/versions"
},
{
"value": "2.7.1-1",
"evidence": "/affected/2/versions"
},
{
"value": "2.8.0-1",
"evidence": "/affected/2/versions"
},
{
"value": "2.8.0-2",
"evidence": "/affected/2/versions"
},
{
"value": "2.9.0-1",
"evidence": "/affected/2/versions"
},
{
"value": "2.9.0-2",
"evidence": "/affected/2/versions"
}
]
}
],
"severity": "medium",
"structured": {
"id": "DEBIAN-CVE-2026-59882",
"aliases": [
"DEBIAN-CVE-2026-59882"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "php-guzzlehttp-psr7",
"purl": "pkg:deb/debian/php-guzzlehttp-psr7?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"versions": [
"2.10.3-1",
"2.10.4-1",
"2.11.0-1",
"2.12.0-1",
"2.12.1-1",
"2.12.3-1",
"2.12.4-1",
"2.12.5-1",
"2.13.0-1",
"2.13.1-1",
"2.4.5-1",
"2.4.5-1+deb12u1",
"2.5.0-1",
"2.6.0-1",
"2.6.1-1",
"2.6.2-1",
"2.6.2-2",
"2.6.2-3",
"2.7.0-1",
"2.7.0-2",
"2.7.0-3",
"2.7.1-1",
"2.8.0-1",
"2.8.0-2",
"2.9.0-1",
"2.9.0-2",
"3.0.0-1",
"3.1.0-1",
"3.2.0-1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-59882.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "php-guzzlehttp-psr7",
"purl": "pkg:deb/debian/php-guzzlehttp-psr7?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"versions": [
"2.10.3-1",
"2.10.4-1",
"2.11.0-1",
"2.12.0-1",
"2.12.1-1",
"2.12.3-1",
"2.12.4-1",
"2.12.5-1",
"2.13.0-1",
"2.13.1-1",
"2.7.1-1",
"2.7.1-1+deb13u1",
"2.7.1-1+deb13u2",
"2.8.0-1",
"2.8.0-2",
"2.9.0-1",
"2.9.0-2",
"3.0.0-1",
"3.1.0-1",
"3.2.0-1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-59882.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "2.12.3-1"
}
]
}
],
"package": {
"name": "php-guzzlehttp-psr7",
"purl": "pkg:deb/debian/php-guzzlehttp-psr7?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"versions": [
"2.10.3-1",
"2.10.4-1",
"2.11.0-1",
"2.12.0-1",
"2.12.1-1",
"2.7.1-1",
"2.8.0-1",
"2.8.0-2",
"2.9.0-1",
"2.9.0-2"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-59882.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
],
"modified": "2026-10-26T12:01:32.979410614Z",
"provider": "osv",
"upstream": [
"CVE-2026-59882"
],
"references": [
"https://security-tracker.debian.org/tracker/CVE-2026-59882"
]
},
"related_cves": [
{
"value": "CVE-2026-59882",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 451618,
"published_at": "2026-07-08T17:17:26.597+00:00"
}