Medium
Monitoring-user password logged in cleartext by postgres_exporter in postgresql VM charm
Type: advisorySources: OSV
The postgresql-operator charm runs a Prometheus postgres_exporter to collect database metrics using a dedicated "monitoring" PostgreSQL user. On database connection errors, the exporter writes the monitoring user's password in cleartext to its logs. Any actor able to read those logs can recover the password, which grants read-only pg_monitor access to PostgreSQL. This is fixed in the dev track (14/edge) in revisions 1189 (arm64) and 1190 (amd64), and in the stable track (14/stable) in revisions 1216 (arm64) and 1217 (amd64).
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2026-104055
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 7 Nov 2026, 05:27 UTC · Revision 1
Source evidence
Monitoring-user password logged in cleartext by postgres_exporter in postgresql VM charm
core-osv · Original sourcePublished 2 Oct 2026, 20:35 UTC
The postgresql-operator charm runs a Prometheus postgres_exporter to collect database metrics using a dedicated "monitoring" PostgreSQL user. On database connection errors, the exporter writes the monitoring user's password in cleartext to its logs. Any actor able to read those logs can recover the password, which grants read-only pg_monitor access to PostgreSQL. This is fixed in the dev track (14/edge) in revisions 1189 (arm64) and 1190 (amd64), and in the stable track (14/stable) in revisions 1216 (arm64) and 1217 (amd64).
osv:CVE-2026-104055
Complete source record
{
"id": "8c0281408c8ab446f08a85273cc1c7a950a58adc7eec15480600452844014730",
"url": "https://osv.dev/vulnerability/CVE-2026-104055",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "Monitoring-user password logged in cleartext by postgres_exporter in postgresql VM charm",
"summary": "The postgresql-operator charm runs a Prometheus postgres_exporter to collect database metrics using a dedicated \"monitoring\" PostgreSQL user. On database connection errors, the exporter writes the monitoring user's password in cleartext to its logs. Any actor able to read those logs can recover the password, which grants read-only pg_monitor access to PostgreSQL. This is fixed in the dev track (14/edge) in revisions 1189 (arm64) and 1190 (amd64), and in the stable track (14/stable) in revisions 1216 (arm64) and 1217 (amd64).",
"evidence": "osv:CVE-2026-104055",
"products": [],
"severity": "medium",
"structured": {
"id": "CVE-2026-104055",
"aliases": [
"CVE-2026-104055",
"GHSA-rcx7-7rh5-r542"
],
"metrics": [
{
"type": "CVSS_V4",
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/canonical/postgresql-operator",
"type": "GIT",
"events": [
{
"introduced": "0"
},
{
"fixed": "d4c920944bb8d2776821650ad2c277d7f5bb687c"
},
{
"fixed": "c9910b32b0472c6875364dcea807613063d24e08"
},
{
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}
],
"database_specific": {
"extracted_events": [
{
"range": [
{
"introduced": "0"
},
{
"fixed": "1189"
}
],
"source": "AFFECTED_FIELD",
"strategy": "StandardRange"
},
{
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},
{
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}
],
"source": "AFFECTED_FIELD",
"strategy": "StandardRange"
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{
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{
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],
"source": "AFFECTED_FIELD",
"strategy": "StandardRange"
}
]
}
}
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"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-104055.json"
}
}
],
"modified": "2026-10-28T02:30:50.139810692Z",
"provider": "osv",
"references": [
"https://charmhub.io/postgresql",
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/104xxx/CVE-2026-104055.json",
"https://github.com/canonical/postgresql-operator/security/advisories/GHSA-rcx7-7rh5-r542",
"https://nvd.nist.gov/vuln/detail/CVE-2026-104055",
"https://github.com/canonical/charmed-postgresql-snap/pull/305",
"https://github.com/canonical/charmed-postgresql-snap/pull/307",
"https://github.com/canonical/postgresql-operator/pull/1863",
"https://github.com/canonical/postgresql-operator"
],
"provider_metadata": {
"cwe_ids": [
"CWE-532"
],
"cna_assigner": "canonical",
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/104xxx/CVE-2026-104055.json"
}
},
"related_cves": [
{
"value": "CVE-2026-104055",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 518369,
"published_at": "2026-10-02T20:35:50.514+00:00"
}