CriticalFix available
spip — security advisory
SPIP before 4.4.21 allows unauthenticated remote attackers to execute arbitrary code, as exploited in the wild in August 2026. This is related to code injection via an X-Spip-Filtre HTTP request header that is mishandled by analyse_resultat_skel.
- Products
- spip
- Affected versions
- 4.4.10+dfsg-1, 4.4.11+dfsg-0+deb13u1, 4.4.11+dfsg-1, 4.4.13+dfsg-0+deb13u1, 4.4.13+dfsg-1, 4.4.14+dfsg-1, 4.4.15+dfsg-0+deb13u1, 4.4.15+dfsg-1, 4.4.16+dfsg-0+deb13u1, 4.4.16+dfsg-1, 4.4.18+dfsg-1, 4.4.19+dfsg-0+deb13u1, 4.4.19+dfsg-1, 4.4.20+dfsg-0+deb13u1, 4.4.20+dfsg-1, 4.4.3+dfsg-1, 4.4.3+dfsg-1+deb13u1, 4.4.4+dfsg-1, 4.4.5+dfsg-1, 4.4.6+dfsg-1, 4.4.7+dfsg-1, 4.4.8+dfsg-1, 4.4.9+dfsg-1
- Fixed versions
- 4.4.21+dfsg-0+deb13u1, 4.4.21+dfsg-1
- CVEs
- CVE-2026-77806
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 30 Oct 2026, 19:55 UTC · Revision 1
Source evidence
SPIP before 4.4.21 allows unauthenticated remote attackers to execute arbitrary code, as exploited in the wild in August 2026. This is related to code injection via an X-Spip-Filtre HTTP request header that is mishandled by analyse_resultat_skel.
osv:DEBIAN-CVE-2026-77806
spip
Fixed versions: 4.4.21+dfsg-0+deb13u1
spip
Fixed versions: 4.4.21+dfsg-1
Complete source record
{
"id": "98db9ffd76c1a86f410fb15560bc7522cff4d843eec0a6267923c755cf12e48e",
"url": "https://osv.dev/vulnerability/DEBIAN-CVE-2026-77806",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "DEBIAN-CVE-2026-77806",
"summary": "SPIP before 4.4.21 allows unauthenticated remote attackers to execute arbitrary code, as exploited in the wild in August 2026. This is related to code injection via an X-Spip-Filtre HTTP request header that is mishandled by analyse_resultat_skel.",
"evidence": "osv:DEBIAN-CVE-2026-77806",
"products": [
{
"name": {
"value": "spip",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "4.4.21+dfsg-0+deb13u1",
"evidence": "/affected/0/ranges"
}
],
"affected_versions": [
{
"value": "4.4.10+dfsg-1",
"evidence": "/affected/0/versions"
},
{
"value": "4.4.11+dfsg-0+deb13u1",
"evidence": "/affected/0/versions"
},
{
"value": "4.4.11+dfsg-1",
"evidence": "/affected/0/versions"
},
{
"value": "4.4.13+dfsg-0+deb13u1",
"evidence": "/affected/0/versions"
},
{
"value": "4.4.13+dfsg-1",
"evidence": "/affected/0/versions"
},
{
"value": "4.4.14+dfsg-1",
"evidence": "/affected/0/versions"
},
{
"value": "4.4.15+dfsg-0+deb13u1",
"evidence": "/affected/0/versions"
},
{
"value": "4.4.15+dfsg-1",
"evidence": "/affected/0/versions"
},
{
"value": "4.4.16+dfsg-0+deb13u1",
"evidence": "/affected/0/versions"
},
{
"value": "4.4.16+dfsg-1",
"evidence": "/affected/0/versions"
},
{
"value": "4.4.18+dfsg-1",
"evidence": "/affected/0/versions"
},
{
"value": "4.4.19+dfsg-0+deb13u1",
"evidence": "/affected/0/versions"
},
{
"value": "4.4.19+dfsg-1",
"evidence": "/affected/0/versions"
},
{
"value": "4.4.20+dfsg-0+deb13u1",
"evidence": "/affected/0/versions"
},
{
"value": "4.4.20+dfsg-1",
"evidence": "/affected/0/versions"
},
{
"value": "4.4.3+dfsg-1",
"evidence": "/affected/0/versions"
},
{
"value": "4.4.3+dfsg-1+deb13u1",
"evidence": "/affected/0/versions"
},
{
"value": "4.4.4+dfsg-1",
"evidence": "/affected/0/versions"
},
{
"value": "4.4.5+dfsg-1",
"evidence": "/affected/0/versions"
},
{
"value": "4.4.6+dfsg-1",
"evidence": "/affected/0/versions"
},
{
"value": "4.4.7+dfsg-1",
"evidence": "/affected/0/versions"
},
{
"value": "4.4.8+dfsg-1",
"evidence": "/affected/0/versions"
},
{
"value": "4.4.9+dfsg-1",
"evidence": "/affected/0/versions"
}
]
},
{
"name": {
"value": "spip",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "4.4.21+dfsg-1",
"evidence": "/affected/1/ranges"
}
],
"affected_versions": [
{
"value": "4.4.10+dfsg-1",
"evidence": "/affected/1/versions"
},
{
"value": "4.4.11+dfsg-1",
"evidence": "/affected/1/versions"
},
{
"value": "4.4.13+dfsg-1",
"evidence": "/affected/1/versions"
},
{
"value": "4.4.14+dfsg-1",
"evidence": "/affected/1/versions"
},
{
"value": "4.4.15+dfsg-1",
"evidence": "/affected/1/versions"
},
{
"value": "4.4.16+dfsg-1",
"evidence": "/affected/1/versions"
},
{
"value": "4.4.18+dfsg-1",
"evidence": "/affected/1/versions"
},
{
"value": "4.4.19+dfsg-1",
"evidence": "/affected/1/versions"
},
{
"value": "4.4.20+dfsg-1",
"evidence": "/affected/1/versions"
},
{
"value": "4.4.3+dfsg-1",
"evidence": "/affected/1/versions"
},
{
"value": "4.4.4+dfsg-1",
"evidence": "/affected/1/versions"
},
{
"value": "4.4.5+dfsg-1",
"evidence": "/affected/1/versions"
},
{
"value": "4.4.6+dfsg-1",
"evidence": "/affected/1/versions"
},
{
"value": "4.4.7+dfsg-1",
"evidence": "/affected/1/versions"
},
{
"value": "4.4.8+dfsg-1",
"evidence": "/affected/1/versions"
},
{
"value": "4.4.9+dfsg-1",
"evidence": "/affected/1/versions"
}
]
}
],
"severity": "critical",
"structured": {
"id": "DEBIAN-CVE-2026-77806",
"aliases": [
"DEBIAN-CVE-2026-77806"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "4.4.21+dfsg-0+deb13u1"
}
]
}
],
"package": {
"name": "spip",
"purl": "pkg:deb/debian/spip?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"versions": [
"4.4.10+dfsg-1",
"4.4.11+dfsg-0+deb13u1",
"4.4.11+dfsg-1",
"4.4.13+dfsg-0+deb13u1",
"4.4.13+dfsg-1",
"4.4.14+dfsg-1",
"4.4.15+dfsg-0+deb13u1",
"4.4.15+dfsg-1",
"4.4.16+dfsg-0+deb13u1",
"4.4.16+dfsg-1",
"4.4.18+dfsg-1",
"4.4.19+dfsg-0+deb13u1",
"4.4.19+dfsg-1",
"4.4.20+dfsg-0+deb13u1",
"4.4.20+dfsg-1",
"4.4.3+dfsg-1",
"4.4.3+dfsg-1+deb13u1",
"4.4.4+dfsg-1",
"4.4.5+dfsg-1",
"4.4.6+dfsg-1",
"4.4.7+dfsg-1",
"4.4.8+dfsg-1",
"4.4.9+dfsg-1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-77806.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "4.4.21+dfsg-1"
}
]
}
],
"package": {
"name": "spip",
"purl": "pkg:deb/debian/spip?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"versions": [
"4.4.10+dfsg-1",
"4.4.11+dfsg-1",
"4.4.13+dfsg-1",
"4.4.14+dfsg-1",
"4.4.15+dfsg-1",
"4.4.16+dfsg-1",
"4.4.18+dfsg-1",
"4.4.19+dfsg-1",
"4.4.20+dfsg-1",
"4.4.3+dfsg-1",
"4.4.4+dfsg-1",
"4.4.5+dfsg-1",
"4.4.6+dfsg-1",
"4.4.7+dfsg-1",
"4.4.8+dfsg-1",
"4.4.9+dfsg-1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-77806.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
],
"modified": "2026-10-16T09:47:25.242293777Z",
"provider": "osv",
"upstream": [
"CVE-2026-77806"
],
"references": [
"https://security-tracker.debian.org/tracker/CVE-2026-77806"
]
},
"related_cves": [
{
"value": "CVE-2026-77806",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 338560,
"published_at": "2026-08-21T14:16:53.903+00:00"
}