UnratedFix available
Fix CVE(s): CVE-2026-6475
Type: advisorySources: OSV
* SECURITY UPDATE: Path traversal in pg_rewind: file, directory and symlink paths received from the source server over libpq were acted on without validation, so a rogue origin could make pg_rewind write, truncate or unlink files outside the target data directory - debian/patches/CVE-2026-6475.patch: Add path_is_safe_for_extraction() in src/port/path.c, which canonicalises a path and requires it to stay relative and below the current directory, and gate every pg_rewind target file/dir/symlink operation on it with pg_fatal() (upstream commit 498829dca4; the pg_basebackup astreamer half of that commit is v15+ and absent from 9.6) - CVE-2026-6475: path traversal in pg_rewind target file operations via unvalidated paths supplied by the source server
- Products
- libecpg-compat3-9.6, libecpg-dev-9.6, libecpg6-9.6, libpgtypes3-9.6, libpq-dev-9.6, libpq5-9.6, postgresql-9.6, postgresql-client-9.6, postgresql-contrib-9.6, postgresql-doc-9.6, postgresql-plperl-9.6, postgresql-plpython-9.6, postgresql-plpython3-9.6, postgresql-pltcl-9.6, postgresql-server-dev-9.6
- Affected versions
- Not specified
- Fixed versions
- 9.6.24-0+deb10u1+tuxcare.els5
- CVEs
- CVE-2026-6475
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 11:22 UTC · Revision 1
Source evidence
* SECURITY UPDATE: Path traversal in pg_rewind: file, directory and symlink paths received from the source server over libpq were acted on without validation, so a rogue origin could make pg_rewind write, truncate or unlink files outside the target data directory - debian/patches/CVE-2026-6475.patch: Add path_is_safe_for_extraction() in src/port/path.c, which canonicalises a path and requires it to stay relative and below the current directory, and gate every pg_rewind target file/dir/symlink operation on it with pg_fatal() (upstream commit 498829dca4; the pg_basebackup astreamer half of that commit is v15+ and absent from 9.6) - CVE-2026-6475: path traversal in pg_rewind target file operations via unvalidated paths supplied by the source server
osv:CLSA-2026-1788193166
libecpg-compat3-9.6
Fixed versions: 9.6.24-0+deb10u1+tuxcare.els5
libecpg-dev-9.6
Fixed versions: 9.6.24-0+deb10u1+tuxcare.els5
libecpg6-9.6
Fixed versions: 9.6.24-0+deb10u1+tuxcare.els5
libpgtypes3-9.6
Fixed versions: 9.6.24-0+deb10u1+tuxcare.els5
libpq-dev-9.6
Fixed versions: 9.6.24-0+deb10u1+tuxcare.els5
libpq5-9.6
Fixed versions: 9.6.24-0+deb10u1+tuxcare.els5
postgresql-9.6
Fixed versions: 9.6.24-0+deb10u1+tuxcare.els5
postgresql-client-9.6
Fixed versions: 9.6.24-0+deb10u1+tuxcare.els5
postgresql-contrib-9.6
Fixed versions: 9.6.24-0+deb10u1+tuxcare.els5
postgresql-doc-9.6
Fixed versions: 9.6.24-0+deb10u1+tuxcare.els5
postgresql-plperl-9.6
Fixed versions: 9.6.24-0+deb10u1+tuxcare.els5
postgresql-plpython-9.6
Fixed versions: 9.6.24-0+deb10u1+tuxcare.els5
postgresql-plpython3-9.6
Fixed versions: 9.6.24-0+deb10u1+tuxcare.els5
postgresql-pltcl-9.6
Fixed versions: 9.6.24-0+deb10u1+tuxcare.els5
postgresql-server-dev-9.6
Fixed versions: 9.6.24-0+deb10u1+tuxcare.els5
Complete source record
{
"id": "377be792a613cdf14458c48e86b440b4b8e1b2dd3139f07689e9d20d3ffaccd0",
"url": "https://osv.dev/vulnerability/CLSA-2026-1788193166",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "Fix CVE(s): CVE-2026-6475",
"summary": "* SECURITY UPDATE: Path traversal in pg_rewind: file, directory and symlink paths received from the source server over libpq were acted on without validation, so a rogue origin could make pg_rewind write, truncate or unlink files outside the target data directory - debian/patches/CVE-2026-6475.patch: Add path_is_safe_for_extraction() in src/port/path.c, which canonicalises a path and requires it to stay relative and below the current directory, and gate every pg_rewind target file/dir/symlink operation on it with pg_fatal() (upstream commit 498829dca4; the pg_basebackup astreamer half of that commit is v15+ and absent from 9.6) - CVE-2026-6475: path traversal in pg_rewind target file operations via unvalidated paths supplied by the source server",
"evidence": "osv:CLSA-2026-1788193166",
"products": [
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"evidence": "/affected/0/package/name"
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{
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{
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{
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{
"name": {
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"affected_versions": []
},
{
"name": {
"value": "postgresql-doc-9.6",
"evidence": "/affected/9/package/name"
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"prerequisites": [],
"fixed_versions": [
{
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"evidence": "/affected/9/ranges"
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],
"affected_versions": []
},
{
"name": {
"value": "postgresql-plperl-9.6",
"evidence": "/affected/10/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
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"evidence": "/affected/10/ranges"
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"affected_versions": []
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{
"name": {
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"evidence": "/affected/11/package/name"
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{
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"evidence": "/affected/12/package/name"
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{
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"affected_versions": []
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{
"name": {
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"evidence": "/affected/13/package/name"
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{
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{
"name": {
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"evidence": "/affected/14/package/name"
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{
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],
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],
"severity": "unknown",
"structured": {
"id": "CLSA-2026-1788193166",
"aliases": [
"CLSA-2026-1788193166"
],
"affected": [
{
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{
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{
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],
"package": {
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"purl": "pkg:deb/tuxcare/libecpg-compat3-9.6?distro=debian-10",
"ecosystem": "TuxCare:Debian:10"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/debian10els/CLSA-2026-1788193166.json"
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"purl": "pkg:deb/tuxcare/libecpg-dev-9.6?distro=debian-10",
"ecosystem": "TuxCare:Debian:10"
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"database_specific": {
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"package": {
"name": "libecpg6-9.6",
"purl": "pkg:deb/tuxcare/libecpg6-9.6?distro=debian-10",
"ecosystem": "TuxCare:Debian:10"
},
"database_specific": {
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}
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"package": {
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"purl": "pkg:deb/tuxcare/libpgtypes3-9.6?distro=debian-10",
"ecosystem": "TuxCare:Debian:10"
},
"database_specific": {
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}
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{
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"package": {
"name": "libpq-dev-9.6",
"purl": "pkg:deb/tuxcare/libpq-dev-9.6?distro=debian-10",
"ecosystem": "TuxCare:Debian:10"
},
"database_specific": {
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"package": {
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"purl": "pkg:deb/tuxcare/libpq5-9.6?distro=debian-10",
"ecosystem": "TuxCare:Debian:10"
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"package": {
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"ecosystem": "TuxCare:Debian:10"
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"database_specific": {
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}
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{
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"package": {
"name": "postgresql-client-9.6",
"purl": "pkg:deb/tuxcare/postgresql-client-9.6?distro=debian-10",
"ecosystem": "TuxCare:Debian:10"
},
"database_specific": {
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}
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{
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"package": {
"name": "postgresql-contrib-9.6",
"purl": "pkg:deb/tuxcare/postgresql-contrib-9.6?distro=debian-10",
"ecosystem": "TuxCare:Debian:10"
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"package": {
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"purl": "pkg:deb/tuxcare/postgresql-doc-9.6?distro=debian-10",
"ecosystem": "TuxCare:Debian:10"
},
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},
{
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],
"package": {
"name": "postgresql-plperl-9.6",
"purl": "pkg:deb/tuxcare/postgresql-plperl-9.6?distro=debian-10",
"ecosystem": "TuxCare:Debian:10"
},
"database_specific": {
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}
},
{
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}
]
}
],
"package": {
"name": "postgresql-plpython-9.6",
"purl": "pkg:deb/tuxcare/postgresql-plpython-9.6?distro=debian-10",
"ecosystem": "TuxCare:Debian:10"
},
"database_specific": {
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},
{
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],
"package": {
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"ecosystem": "TuxCare:Debian:10"
},
"database_specific": {
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}
},
{
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},
{
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]
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],
"package": {
"name": "postgresql-pltcl-9.6",
"purl": "pkg:deb/tuxcare/postgresql-pltcl-9.6?distro=debian-10",
"ecosystem": "TuxCare:Debian:10"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/debian10els/CLSA-2026-1788193166.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
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{
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}
]
}
],
"package": {
"name": "postgresql-server-dev-9.6",
"purl": "pkg:deb/tuxcare/postgresql-server-dev-9.6?distro=debian-10",
"ecosystem": "TuxCare:Debian:10"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/debian10els/CLSA-2026-1788193166.json"
}
}
],
"modified": "2026-10-26T09:31:53.127776301Z",
"provider": "osv",
"upstream": [
"CVE-2026-6475"
],
"references": [
"https://errata.tuxcare.com/els_os/debian10els/CLSA-2026-1788193166.html",
"https://nvd.nist.gov/vuln/detail/CVE-2026-6475"
]
},
"related_cves": [
{
"value": "CVE-2026-6475",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": null
},
"source_id": "core-osv",
"document_id": 448829,
"published_at": "2026-08-31T16:19:38+00:00"
}