fort-validator — security advisory
FORT Validator is a Resource Public Key Infrastructure (RPKI) relying-party validator that produces validated route-origin data. FORT Validator versions through 1.6.7 contain an origin-validation error in their RRDP processing: a delegated CA under the same Trust Anchor Locator (TAL) can reference a victim CA’s public RRDP notification and snapshot URLs, causing FORT’s URL-based download cache to report success after deleting the victim’s local snapshot. Following a routine victim publication, this can silently remove the victim’s VRPs and other signed objects from FORT’s output, potentially enabling route hijacking or loss of reachability. Version 1.6.8 contains a patch that rejects cross-origin RRDP snapshot and delta URLs; as a workaround, administrators can disable HTTP/RRDP with --http.enabled=false while keeping rsync enabled, although this can leave data unavailable or stale where rsync is not supported.
- Products
- fort-validator
- Affected versions
- 1.5.4-1, 1.5.4-1+deb12u1, 1.6.1-1, 1.6.1-1~bpo12+2, 1.6.2-1, 1.6.3-1, 1.6.3-1~bpo12+1, 1.6.4+20240930-1, 1.6.4+20240930-1~bpo12+1, 1.6.5-1, 1.6.6-1, 1.6.6-1~bpo12+1, 1.6.7-1, 1.6.7-1~bpo13+1, 1.6.8-1, 1.7.0.experimental-1
- Fixed versions
- 1.6.8-0+deb13u1, 1.6.8-1
- CVEs
- CVE-2026-53499
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 30 Oct 2026, 09:03 UTC · Revision 1
Source evidence
FORT Validator is a Resource Public Key Infrastructure (RPKI) relying-party validator that produces validated route-origin data. FORT Validator versions through 1.6.7 contain an origin-validation error in their RRDP processing: a delegated CA under the same Trust Anchor Locator (TAL) can reference a victim CA’s public RRDP notification and snapshot URLs, causing FORT’s URL-based download cache to report success after deleting the victim’s local snapshot. Following a routine victim publication, this can silently remove the victim’s VRPs and other signed objects from FORT’s output, potentially enabling route hijacking or loss of reachability. Version 1.6.8 contains a patch that rejects cross-origin RRDP snapshot and delta URLs; as a workaround, administrators can disable HTTP/RRDP with --http.enabled=false while keeping rsync enabled, although this can leave data unavailable or stale where rsync is not supported.
osv:DEBIAN-CVE-2026-53499
fort-validator
Fixed versions: Not specified
fort-validator
Fixed versions: 1.6.8-0+deb13u1
fort-validator
Fixed versions: 1.6.8-1
Complete source record
{
"id": "cc1f82260de8ea66f2ef12d0acc402743f74341f03b6aa4ee799f50eaf9d5de0",
"url": "https://osv.dev/vulnerability/DEBIAN-CVE-2026-53499",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "DEBIAN-CVE-2026-53499",
"summary": "FORT Validator is a Resource Public Key Infrastructure (RPKI) relying-party validator that produces validated route-origin data. FORT Validator versions through 1.6.7 contain an origin-validation error in their RRDP processing: a delegated CA under the same Trust Anchor Locator (TAL) can reference a victim CA’s public RRDP notification and snapshot URLs, causing FORT’s URL-based download cache to report success after deleting the victim’s local snapshot. Following a routine victim publication, this can silently remove the victim’s VRPs and other signed objects from FORT’s output, potentially enabling route hijacking or loss of reachability. Version 1.6.8 contains a patch that rejects cross-origin RRDP snapshot and delta URLs; as a workaround, administrators can disable HTTP/RRDP with --http.enabled=false while keeping rsync enabled, although this can leave data unavailable or stale where rsync is not supported.",
"evidence": "osv:DEBIAN-CVE-2026-53499",
"products": [
{
"name": {
"value": "fort-validator",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1.5.4-1",
"evidence": "/affected/0/versions"
},
{
"value": "1.5.4-1+deb12u1",
"evidence": "/affected/0/versions"
},
{
"value": "1.6.1-1",
"evidence": "/affected/0/versions"
},
{
"value": "1.6.1-1~bpo12+2",
"evidence": "/affected/0/versions"
},
{
"value": "1.6.2-1",
"evidence": "/affected/0/versions"
},
{
"value": "1.6.3-1",
"evidence": "/affected/0/versions"
},
{
"value": "1.6.3-1~bpo12+1",
"evidence": "/affected/0/versions"
},
{
"value": "1.6.4+20240930-1",
"evidence": "/affected/0/versions"
},
{
"value": "1.6.4+20240930-1~bpo12+1",
"evidence": "/affected/0/versions"
},
{
"value": "1.6.5-1",
"evidence": "/affected/0/versions"
},
{
"value": "1.6.6-1",
"evidence": "/affected/0/versions"
},
{
"value": "1.6.6-1~bpo12+1",
"evidence": "/affected/0/versions"
},
{
"value": "1.6.7-1",
"evidence": "/affected/0/versions"
},
{
"value": "1.6.7-1~bpo13+1",
"evidence": "/affected/0/versions"
},
{
"value": "1.6.8-1",
"evidence": "/affected/0/versions"
},
{
"value": "1.7.0.experimental-1",
"evidence": "/affected/0/versions"
}
]
},
{
"name": {
"value": "fort-validator",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1.6.8-0+deb13u1",
"evidence": "/affected/1/ranges"
}
],
"affected_versions": [
{
"value": "1.6.6-1",
"evidence": "/affected/1/versions"
},
{
"value": "1.6.7-1",
"evidence": "/affected/1/versions"
},
{
"value": "1.6.7-1~bpo13+1",
"evidence": "/affected/1/versions"
}
]
},
{
"name": {
"value": "fort-validator",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1.6.8-1",
"evidence": "/affected/2/ranges"
}
],
"affected_versions": [
{
"value": "1.6.6-1",
"evidence": "/affected/2/versions"
},
{
"value": "1.6.7-1",
"evidence": "/affected/2/versions"
},
{
"value": "1.6.7-1~bpo13+1",
"evidence": "/affected/2/versions"
}
]
}
],
"severity": "high",
"structured": {
"id": "DEBIAN-CVE-2026-53499",
"aliases": [
"DEBIAN-CVE-2026-53499"
],
"metrics": [
{
"type": "CVSS_V4",
"score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:H/VA:L/SC:N/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "fort-validator",
"purl": "pkg:deb/debian/fort-validator?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"versions": [
"1.5.4-1",
"1.5.4-1+deb12u1",
"1.6.1-1",
"1.6.1-1~bpo12+2",
"1.6.2-1",
"1.6.3-1",
"1.6.3-1~bpo12+1",
"1.6.4+20240930-1",
"1.6.4+20240930-1~bpo12+1",
"1.6.5-1",
"1.6.6-1",
"1.6.6-1~bpo12+1",
"1.6.7-1",
"1.6.7-1~bpo13+1",
"1.6.8-1",
"1.7.0.experimental-1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-53499.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.6.8-0+deb13u1"
}
]
}
],
"package": {
"name": "fort-validator",
"purl": "pkg:deb/debian/fort-validator?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"versions": [
"1.6.6-1",
"1.6.7-1",
"1.6.7-1~bpo13+1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-53499.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.6.8-1"
}
]
}
],
"package": {
"name": "fort-validator",
"purl": "pkg:deb/debian/fort-validator?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"versions": [
"1.6.6-1",
"1.6.7-1",
"1.6.7-1~bpo13+1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-53499.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
],
"modified": "2026-10-13T09:47:38.399366668Z",
"provider": "osv",
"upstream": [
"CVE-2026-53499"
],
"references": [
"https://security-tracker.debian.org/tracker/CVE-2026-53499"
]
},
"related_cves": [
{
"value": "CVE-2026-53499",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 307579,
"published_at": "2026-08-21T23:16:26.07+00:00"
}