symfony — security advisory
Symfony is a PHP framework for web and console applications and a set of reusable PHP components. When authenticating users Symfony by default regenerates the session ID upon login, but preserves the rest of session attributes. Because this does not clear CSRF tokens upon login, this might enables same-site attackers to bypass the CSRF protection mechanism by performing an attack similar to a session-fixation. This issue has been fixed in the 4.4 branch.
- Products
- symfony
- Affected versions
- Not specified
- Fixed versions
- 5.4.20+dfsg-1
- CVEs
- CVE-2022-24895
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 30 Oct 2026, 14:35 UTC · Revision 1
Source evidence
Symfony is a PHP framework for web and console applications and a set of reusable PHP components. When authenticating users Symfony by default regenerates the session ID upon login, but preserves the rest of session attributes. Because this does not clear CSRF tokens upon login, this might enables same-site attackers to bypass the CSRF protection mechanism by performing an attack similar to a session-fixation. This issue has been fixed in the 4.4 branch.
osv:DEBIAN-CVE-2022-24895
symfony
Fixed versions: 5.4.20+dfsg-1
symfony
Fixed versions: 5.4.20+dfsg-1
symfony
Fixed versions: 5.4.20+dfsg-1
Complete source record
{
"id": "035ba738ac930ab5edc9c59618b50437c70ea739e87777bce88fa77c998f0da9",
"url": "https://osv.dev/vulnerability/DEBIAN-CVE-2022-24895",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "DEBIAN-CVE-2022-24895",
"summary": "Symfony is a PHP framework for web and console applications and a set of reusable PHP components. When authenticating users Symfony by default regenerates the session ID upon login, but preserves the rest of session attributes. Because this does not clear CSRF tokens upon login, this might enables same-site attackers to bypass the CSRF protection mechanism by performing an attack similar to a session-fixation. This issue has been fixed in the 4.4 branch.",
"evidence": "osv:DEBIAN-CVE-2022-24895",
"products": [
{
"name": {
"value": "symfony",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "5.4.20+dfsg-1",
"evidence": "/affected/0/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "symfony",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "5.4.20+dfsg-1",
"evidence": "/affected/1/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "symfony",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "5.4.20+dfsg-1",
"evidence": "/affected/2/ranges"
}
],
"affected_versions": []
}
],
"severity": "high",
"structured": {
"id": "DEBIAN-CVE-2022-24895",
"aliases": [
"DEBIAN-CVE-2022-24895"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "5.4.20+dfsg-1"
}
]
}
],
"package": {
"name": "symfony",
"purl": "pkg:deb/debian/symfony?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2022-24895.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "5.4.20+dfsg-1"
}
]
}
],
"package": {
"name": "symfony",
"purl": "pkg:deb/debian/symfony?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2022-24895.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "5.4.20+dfsg-1"
}
]
}
],
"package": {
"name": "symfony",
"purl": "pkg:deb/debian/symfony?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2022-24895.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
],
"modified": "2026-10-15T08:00:51.791837982Z",
"provider": "osv",
"upstream": [
"CVE-2022-24895"
],
"references": [
"https://security-tracker.debian.org/tracker/CVE-2022-24895"
]
},
"related_cves": [
{
"value": "CVE-2022-24895",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 322687,
"published_at": "2023-02-03T22:15:11.273+00:00"
}