{"id":"CVE-2026-50736","aliases":["DEBIAN-CVE-2026-50736","EUVD-2026-49936","GHSA-cg29-63x4-27px","UBUNTU-CVE-2026-50736"],"status":"published","title":"The pglogical queue mechanism, used to convey out-of-band commands such as replicated DDL from a...","description":"The pglogical queue mechanism, used to convey out-of-band commands such as replicated DDL from a publisher to a subscriber, executes message payloads on the subscriber at the privilege level of the apply worker, which is equivalent to a PostgreSQL superuser in default installations. A party acting as the publisher can send crafted queue messages that cause arbitrary SQL to be executed on the subscriber as superuser, escalating from a role permitted to use pglogical to full superuser and breaking the isolation between tenants in shared deployments. To exploit the issue an attacker must be able to direct a subscription at an endpoint they control. In default installations this requires privileges normally reserved for a superuser, so the issue is most relevant to managed deployments where the ability to create subscriptions has been delegated to non-superuser roles.","severity":{"version":"4.0","score":9,"vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H","level":"critical","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00414,"percentile":0.3618,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-89"],"published":"2026-07-28T17:55:27Z","modified":"2026-10-25T02:30:24Z","fixes":[{"ecosystem":"Debian:14","package":"pglogical","fixed_in":["2.4.8-1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:12","package":"pglogical","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.4.2-3","2.4.3-1","2.4.3-2","2.4.4-1","2.4.4-2","2.4.4-3","2.4.5-1","2.4.6-1","2.4.6-2","2.4.7-1","2.4.8-1","2.4.8-2"]},{"source":"osv","ecosystem":"Debian:13","package":"pglogical","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.4.5-1","2.4.6-1","2.4.6-2","2.4.7-1","2.4.8-1","2.4.8-2"]},{"source":"osv","ecosystem":"Debian:14","package":"pglogical","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.4.8-1"}]}],"versions":["2.4.5-1","2.4.6-1","2.4.6-2","2.4.7-1"]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"pglogical","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.0.0-1","2.1.0-1","2.1.1-1"]},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"pglogical","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.2.2-1","2.3.0-1"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"pglogical","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.3.3-3","2.4.0-2","2.4.1-1"]},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"pglogical","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.4.3-1ubuntu1","2.4.4-1"]},{"source":"osv","ecosystem":"Ubuntu:26.10","package":"pglogical","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.4.6-2","2.4.7-1","2.4.8-1"]},{"source":"osv","ecosystem":"Ubuntu:26.04:LTS","package":"pglogical","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.4.5-1build1","2.4.6-1","2.4.6-2"]}],"products":[{"vendor":"enterprisedb","product":"pglogical"}],"references":[{"url":"https://www.enterprisedb.com/docs/security/advisories/cve202650736/","tags":["Vendor Advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-50736"},{"url":"https://www.enterprisedb.com/docs/security/advisories/cve202650736"},{"url":"https://github.com/advisories/GHSA-cg29-63x4-27px"},{"url":"https://security-tracker.debian.org/tracker/CVE-2026-50736","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2026-50736","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-50736","tags":["report"]},{"url":"https://github.com/2ndQuadrant/pglogical/releases/tag/REL2_4_8","tags":["report"]},{"url":"https://www.enterprisedb.com/docs/security/advisories/cve202650735/","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2026-50736","description":"The pglogical queue mechanism, used to convey out-of-band commands such as replicated DDL from a publisher to a subscriber, executes message payloads on the subscriber at the privilege level of the apply worker, which is equivalent to a PostgreSQL superuser in default installations. A party acting as the publisher can send crafted queue messages that cause arbitrary SQL to be executed on the subscriber as superuser, escalating from a role permitted to use pglogical to full superuser and breaking the isolation between tenants in shared deployments. To exploit the issue an attacker must be able to direct a subscription at an endpoint they control. In default installations this requires privileges normally reserved for a superuser, so the issue is most relevant to managed deployments where the ability to create subscriptions has been delegated to non-superuser roles.","status":"published","published":"2026-07-28T17:55:27.283Z","modified":"2026-07-28T18:54:34.942Z","cvss":[{"version":"4.0","score":9,"vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H","level":"critical","assessor":"cna"}],"cwes":["CWE-89"],"updated_at":"2026-11-02T14:20:09.098623Z"}],"euvd":[{"id":"EUVD-2026-49936","description":"The pglogical queue mechanism, used to convey out-of-band commands such as replicated DDL from a publisher to a subscriber, executes message payloads on the subscriber at the privilege level of the apply worker, which is equivalent to a PostgreSQL superuser in default installations. A party acting as the publisher can send crafted queue messages that cause arbitrary SQL to be executed on the subscriber as superuser, escalating from a role permitted to use pglogical to full superuser and breaking the isolation between tenants in shared deployments. To exploit the issue an attacker must be able to direct a subscription at an endpoint they control. In default installations this requires privileges normally reserved for a superuser, so the issue is most relevant to managed deployments where the ability to create subscriptions has been delegated to non-superuser roles.","status":"published","published":"2026-07-28T17:55:27Z","modified":"2026-07-28T18:54:34Z","cvss":[{"version":"4.0","score":9,"vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H","level":"critical"}],"updated_at":"2026-11-02T18:02:30.949894Z"}],"ghsa":[{"id":"GHSA-cg29-63x4-27px","title":"The pglogical queue mechanism, used to convey out-of-band commands such as replicated DDL from a...","description":"The pglogical queue mechanism, used to convey out-of-band commands such as replicated DDL from a publisher to a subscriber, executes message payloads on the subscriber at the privilege level of the apply worker, which is equivalent to a PostgreSQL superuser in default installations. A party acting as the publisher can send crafted queue messages that cause arbitrary SQL to be executed on the subscriber as superuser, escalating from a role permitted to use pglogical to full superuser and breaking the isolation between tenants in shared deployments. To exploit the issue an attacker must be able to direct a subscription at an endpoint they control. In default installations this requires privileges normally reserved for a superuser, so the issue is most relevant to managed deployments where the ability to create subscriptions has been delegated to non-superuser roles.","status":"published","published":"2026-07-28T21:31:33Z","modified":"2026-08-24T18:31:26Z","cvss":[{"version":"4.0","score":9,"vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/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","level":"critical"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-89"],"updated_at":"2026-11-02T15:10:54.092672Z"}],"nvd":[{"id":"CVE-2026-50736","description":"The pglogical queue mechanism, used to convey out-of-band commands such as replicated DDL from a publisher to a subscriber, executes message payloads on the subscriber at the privilege level of the apply worker, which is equivalent to a PostgreSQL superuser in default installations. A party acting as the publisher can send crafted queue messages that cause arbitrary SQL to be executed on the subscriber as superuser, escalating from a role permitted to use pglogical to full superuser and breaking the isolation between tenants in shared deployments. To exploit the issue an attacker must be able to direct a subscription at an endpoint they control. In default installations this requires privileges normally reserved for a superuser, so the issue is most relevant to managed deployments where the ability to create subscriptions has been delegated to non-superuser roles.","status":"published","published":"2026-07-28T19:17:36.7Z","modified":"2026-10-23T23:10:00.157Z","cvss":[{"version":"4.0","score":9,"vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/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","level":"critical","assessor":"secondary"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary"}],"cwes":["CWE-89"],"updated_at":"2026-11-02T14:12:33.249634Z"}],"osv":[{"id":"CVE-2026-50736","description":"The pglogical queue mechanism, used to convey out-of-band commands such as replicated DDL from a publisher to a subscriber, executes message payloads on the subscriber at the privilege level of the apply worker, which is equivalent to a PostgreSQL superuser in default installations. A party acting as the publisher can send crafted queue messages that cause arbitrary SQL to be executed on the subscriber as superuser, escalating from a role permitted to use pglogical to full superuser and breaking the isolation between tenants in shared deployments. To exploit the issue an attacker must be able to direct a subscription at an endpoint they control. In default installations this requires privileges normally reserved for a superuser, so the issue is most relevant to managed deployments where the ability to create subscriptions has been delegated to non-superuser roles.","status":"published","published":"2026-07-28T19:17:36.7Z","modified":"2026-10-25T02:30:24.437103261Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:45:07.431113Z"},{"id":"DEBIAN-CVE-2026-50736","description":"The pglogical queue mechanism, used to convey out-of-band commands such as replicated DDL from a publisher to a subscriber, executes message payloads on the subscriber at the privilege level of the apply worker, which is equivalent to a PostgreSQL superuser in default installations. A party acting as the publisher can send crafted queue messages that cause arbitrary SQL to be executed on the subscriber as superuser, escalating from a role permitted to use pglogical to full superuser and breaking the isolation between tenants in shared deployments. To exploit the issue an attacker must be able to direct a subscription at an endpoint they control. In default installations this requires privileges normally reserved for a superuser, so the issue is most relevant to managed deployments where the ability to create subscriptions has been delegated to non-superuser roles.","status":"published","published":"2026-07-28T19:17:36.7Z","modified":"2026-10-24T10:01:03.966097467Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:45:56.877408Z"},{"id":"UBUNTU-CVE-2026-50736","description":"The pglogical queue mechanism, used to convey out-of-band commands such as replicated DDL from a publisher to a subscriber, executes message payloads on the subscriber at the privilege level of the apply worker, which is equivalent to a PostgreSQL superuser in default installations. A party acting as the publisher can send crafted queue messages that cause arbitrary SQL to be executed on the subscriber as superuser, escalating from a role permitted to use pglogical to full superuser and breaking the isolation between tenants in shared deployments. To exploit the issue an attacker must be able to direct a subscription at an endpoint they control. In default installations this requires privileges normally reserved for a superuser, so the issue is most relevant to managed deployments where the ability to create subscriptions has been delegated to non-superuser roles.","status":"published","published":"2026-07-28T19:17:00Z","modified":"2026-10-17T12:58:33.305073119Z","cvss":[{"version":"4.0","score":9,"vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H","level":"critical"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T16:56:33.391918Z"}]}}