Medium
Safing Portmaster before 2.2.5 Unauthenticated Forced Downgrade via /api/v1/updates/from-url
Type: advisorySources: OSV
Safing Portmaster before 2.2.5 contains a missing authorization vulnerability that allows unprivileged local processes to force updates by calling the POST /api/v1/updates/from-url endpoint registered with api.PermitAnyone. Attackers can supply an attacker-controlled index URL that bypasses version checks and auto-apply settings, installing older Safing-signed releases carrying previously fixed vulnerabilities.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2026-111664
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 8 Nov 2026, 00:25 UTC · Revision 1
Source evidence
Safing Portmaster before 2.2.5 Unauthenticated Forced Downgrade via /api/v1/updates/from-url
core-osv · Original sourcePublished 16 Oct 2026, 17:39 UTC
Safing Portmaster before 2.2.5 contains a missing authorization vulnerability that allows unprivileged local processes to force updates by calling the POST /api/v1/updates/from-url endpoint registered with api.PermitAnyone. Attackers can supply an attacker-controlled index URL that bypasses version checks and auto-apply settings, installing older Safing-signed releases carrying previously fixed vulnerabilities.
osv:CVE-2026-111664
Complete source record
{
"id": "ddbc3c15184b1bdd685903e4ab0e1d3088707eae5fb4ede7dea31c433ab5b1ea",
"url": "https://osv.dev/vulnerability/CVE-2026-111664",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "Safing Portmaster before 2.2.5 Unauthenticated Forced Downgrade via /api/v1/updates/from-url",
"summary": "Safing Portmaster before 2.2.5 contains a missing authorization vulnerability that allows unprivileged local processes to force updates by calling the POST /api/v1/updates/from-url endpoint registered with api.PermitAnyone. Attackers can supply an attacker-controlled index URL that bypasses version checks and auto-apply settings, installing older Safing-signed releases carrying previously fixed vulnerabilities.",
"evidence": "osv:CVE-2026-111664",
"products": [],
"severity": "medium",
"structured": {
"id": "CVE-2026-111664",
"aliases": [
"CVE-2026-111664"
],
"metrics": [
{
"type": "CVSS_V4",
"score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/safing/portmaster",
"type": "GIT",
"events": [
{
"introduced": "0"
},
{
"fixed": "67b684cd0c743a4f880f1a7a500bb43c8f3e7da8"
},
{
"fixed": "f943e1eaf98f45bc48490bf288e1d63c04929ae0"
}
],
"database_specific": {
"extracted_events": [
{
"range": [
{
"introduced": "0"
},
{
"fixed": "2.2.5"
}
],
"source": "AFFECTED_FIELD",
"strategy": "StandardRange"
},
{
"range": [
{
"fixed": "f943e1eaf98f45bc48490bf288e1d63c04929ae0"
}
],
"source": "REFERENCES_COMMIT"
},
{
"range": [
{
"fixed": "67b684cd0c743a4f880f1a7a500bb43c8f3e7da8"
}
],
"source": "REFERENCES_TAG",
"original_tag": "v2.2.5"
}
]
}
}
],
"versions": [
"v2.2.1",
"v2.1.18",
"v2.1.7",
"v2.0.25",
"v2.0.23",
"v2.0.22",
"v2.0.21",
"v2.0.20",
"v1.6.24",
"v1.6.23",
"v1.6.22",
"v1.6.21",
"v1.6.20",
"v1.6.19",
"v1.6.18",
"v1.6.17",
"v1.6.16",
"v1.6.15",
"v1.6.14",
"v1.6.13",
"v1.6.12",
"v1.6.11",
"v1.6.10",
"v1.6.9",
"v1.6.8",
"v1.6.7",
"v1.6.6",
"v1.6.5",
"v1.6.4",
"v1.6.3",
"v1.6.2",
"v1.6.1",
"v1.6.0",
"v1.5.1",
"v1.5.0",
"v1.4.11",
"v1.4.10",
"v1.4.9",
"v1.4.8",
"v1.4.7",
"v1.4.6",
"v1.4.6-prep2",
"v1.4.5",
"v1.4.4",
"v1.4.3",
"v1.4.2",
"v1.4.1",
"v1.4.0",
"v1.3.6",
"v1.3.5",
"v1.3.4",
"v1.3.3",
"v1.3.2",
"v1.3.1",
"v1.3.0",
"v1.2.0",
"v1.1.0",
"v1.0.14",
"v1.0.13",
"v1.0.12",
"v1.0.11",
"v1.0.10",
"v1.0.9",
"v1.0.8",
"v1.0.7",
"v1.0.6",
"v1.0.5",
"v1.0.4",
"v1.0.3",
"v1.0.2",
"v1.0.1",
"v1.0.0",
"v0.9.11",
"v0.9.10",
"v0.9.9",
"v0.9.8",
"v0.9.7",
"v0.9.6",
"v0.9.5",
"v0.9.4",
"v0.9.3",
"v0.9.2",
"v0.9.1",
"v0.9.1-interdep",
"v0.9.0",
"v0.8.14-interdep",
"v0.8.13",
"v0.8.12",
"v0.8.11",
"v0.8.10",
"v0.8.9",
"v0.8.9-interdep",
"v0.8.8",
"v0.8.7",
"v0.8.6",
"v0.8.5",
"v0.8.4",
"v0.8.3",
"v0.8.2",
"v0.8.1",
"v0.8.0",
"v0.7.21",
"v0.7.20",
"v0.7.19",
"v0.7.18",
"v0.7.17",
"v0.7.16",
"v0.7.15",
"v0.7.14",
"v0.7.13",
"v0.7.12",
"v0.7.11",
"v0.7.10",
"v0.7.9",
"v0.7.8",
"v0.7.7",
"v0.7.6",
"v0.7.5",
"v0.7.4",
"v0.7.3",
"v0.7.2",
"v0.7.1",
"v0.7.0",
"v0.6.22",
"v0.6.21",
"v0.6.20",
"v0.6.19",
"v0.6.18",
"v0.6.17-beta",
"v0.6.16",
"v0.6.15",
"v0.6.14",
"v0.6.13",
"v0.6.12",
"v0.6.11",
"v0.6.10",
"v0.6.9",
"v0.6.8",
"v0.6.7",
"v0.6.6",
"v0.6.5",
"v0.6.4",
"v0.6.3",
"v0.6.2",
"v0.6.1",
"v0.6.0",
"v0.5.7",
"v0.5.6",
"v0.5.5",
"v0.5.4",
"v0.5.3",
"v0.5.2",
"v0.5.1",
"v0.5.0",
"v0.4.17",
"v0.4.18",
"v0.4.16",
"v0.4.15",
"v0.4.14",
"v0.4.13",
"v0.4.12",
"v0.4.11",
"v0.4.10",
"v0.4.9-0.3.5",
"v0.4.9",
"v0.4.8",
"v0.4.7",
"v0.4.6",
"v0.4.5",
"v0.4.4",
"v0.4.3",
"v0.4.2",
"v0.4.1",
"v0.4.0",
"v0.2.5",
"v0.2.3",
"v0.2.2",
"v0.2.1",
"v0.1.0"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-111664.json"
}
}
],
"modified": "2026-10-28T02:30:52.126540766Z",
"provider": "osv",
"references": [
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/111xxx/CVE-2026-111664.json",
"https://github.com/safing/portmaster/releases/tag/v2.2.5",
"https://nvd.nist.gov/vuln/detail/CVE-2026-111664",
"https://www.vulncheck.com/advisories/safing-portmaster-before-2.2.5-unauthenticated-forced-downgrade-via-api-v1-updates-from-url",
"https://github.com/safing/portmaster/issues/2292",
"https://github.com/safing/portmaster/commit/f943e1eaf98f45bc48490bf288e1d63c04929ae0",
"https://github.com/safing/portmaster",
"https://github.com/safing/portmaster/blob/v2.2.3/service/core/api.go#L145-L159"
],
"provider_metadata": {
"cwe_ids": [
"CWE-306"
],
"cna_assigner": "VulnCheck",
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/111xxx/CVE-2026-111664.json"
}
},
"related_cves": [
{
"value": "CVE-2026-111664",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 520951,
"published_at": "2026-10-16T17:39:27.588+00:00"
}