A flaw was found in PostgreSQL involving the pg_cancel_backend role that signals background workers, including the logical replication launcher, autovacuum workers, and the autovacuum launcher. Successful exploitation requires a non-core extension with a less-resilient background worker and would affect that specific background worker only. This issue may allow a remote high privileged user to launch a denial of service (DoS) attack.
総合評価: CVE-2023-5870 は低リスク（39.8/100）。CVSS 深刻度は低。悪用される可能性が高い（EPSS 2.56%、83 パーセンタイル） 根拠: 直近 1 日で EPSS が +1.93% 上昇。悪用への関心が高まっている可能性があります。 推奨対応: 悪用情報と EPSS の推移を監視し、必要に応じて優先度を見直してください。
リスクは変動します。再評価に基づき、本ページの表示内容を更新しています。
EPSS は日次で悪用されやすさの相対度合いを推定します。パーセンタイルは採点済み CVE の中での相対位置（高いほど相対的に深刻）を示します。
| # | 日付 | 旧 EPSS スコア | 新 EPSS スコア | Δ（新 − 旧） |
|---|---|---|---|---|
| 1 | 2026-06-15 | 0.62% | 2.56% | +1.93% |
| 2 | 2026-05-05 | 0.80% | 0.62% | -0.17% |
| 3 | 2026-05-01 | — | 0.80% | — |
EPSS の全履歴 （全 36 件）
この CVE の CVSS 指標。
| ベーススコア | バージョン | 深刻度 | ベクトル | 悪用しやすさ | 影響 | スコアの出典 |
|---|---|---|---|---|---|---|
| 2.2 | 3.1 | LOW |
|
0.7 | 1.4 | [email protected] |
| 4.4 | 3.1 | MEDIUM |
|
0.7 | 3.6 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
alpine
|
— | CVE-2023-5870: 5 source package rows (postgresql12, postgresql14, postgresql15, postgresql16, postgresql17); 21 state rows across 13 repos (3.17-main, 3.18-community, 3.18-main, 3.19-community, 3.19-main, 3.20-community, 3.20-main, 3.21-community, 3.21-main, 3.22-community, 3.22-main, edge-community, edge-main); fixed 21, open 0. | https://security.alpinelinux.org/vuln/CVE-2023-5870 |
debian
|
not yet assigned | CVE-2023-5870 not yet assigned priority: Debian including 2 source packages (postgresql-13, postgresql-15), 2 status rows across 2 suites (bookworm, bullseye): resolved 2. | https://security-tracker.debian.org/tracker/CVE-2023-5870 |
gentoo
|
normal | CVE-2023-5870: 1 GLSA(s) (202408-06), 1 atom(s) (dev-db/postgresql); latest impact normal. | https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2023-5870 |
redhat
|
low | — | https://access.redhat.com/security/cve/CVE-2023-5870 |
suse
|
medium | CVE-2023-5870 severity moderate: SUSE including 610 source package names (14.10-24.14:libpq5-16.1-150200.5.7.1, 14.10-24.14:postgresql-16-150400.4.9.2, …), 1672 product×package rows across 63 product lines (Container suse/postgres, Image SLES15-SP4-Manager-Server-4-3, … (63 product lines)): Fixed 1182, Known Not Affected 259, Known Affected 231. | https://www.suse.com/security/cve/CVE-2023-5870/ |
ubuntu
|
medium | CVE-2023-5870 medium priority: Ubuntu including 8 source packages (postgresql-10, postgresql-12, …), 96 status rows across 12 suites (bionic, focal, jammy, lunar, mantic, noble, oracular, plucky, questing, trusty, upstream, xenial): DNE 77, released 10, ignored 5, not-affected 2, deferred 1, needs-triage 1. | https://ubuntu.com/security/CVE-2023-5870 |
| ベンダー | 製品 | バージョン | 生の CPE |
|---|---|---|---|
| postgresql | postgresql | >= 11.0, < 11.22 | cpe:2.3:a:postgresql:postgresql:*:*:*:*:*:*:*:* |
| postgresql | postgresql | >= 12.0, < 12.17 | cpe:2.3:a:postgresql:postgresql:*:*:*:*:*:*:*:* |
| postgresql | postgresql | >= 13.0, < 13.13 | cpe:2.3:a:postgresql:postgresql:*:*:*:*:*:*:*:* |
| postgresql | postgresql | >= 14.0, < 14.10 | cpe:2.3:a:postgresql:postgresql:*:*:*:*:*:*:*:* |
| postgresql | postgresql | >= 15.0, < 15.5 | cpe:2.3:a:postgresql:postgresql:*:*:*:*:*:*:*:* |
| postgresql | postgresql | 16.0 | cpe:2.3:a:postgresql:postgresql:16.0:*:*:*:*:*:*:* |
| redhat | codeready_linux_builder_eus | 9.2 | cpe:2.3:a:redhat:codeready_linux_builder_eus:9.2:*:*:*:*:*:*:* |
| redhat | codeready_linux_builder_eus_for_power_little_endian_eus | 9.0_ppc64le | cpe:2.3:a:redhat:codeready_linux_builder_eus_for_power_little_endian_eus:9.0_ppc64le:*:*:*:*:*:*:* |
| redhat | codeready_linux_builder_eus_for_power_little_endian_eus | 9.2_ppc64le | cpe:2.3:a:redhat:codeready_linux_builder_eus_for_power_little_endian_eus:9.2_ppc64le:*:*:*:*:*:*:* |
| redhat | codeready_linux_builder_for_arm64_eus | 8.6_aarch64 | cpe:2.3:a:redhat:codeready_linux_builder_for_arm64_eus:8.6_aarch64:*:*:*:*:*:*:* |
| redhat | codeready_linux_builder_for_arm64_eus | 9.0_aarch64 | cpe:2.3:a:redhat:codeready_linux_builder_for_arm64_eus:9.0_aarch64:*:*:*:*:*:*:* |
| redhat | codeready_linux_builder_for_arm64_eus | 9.2_aarch64 | cpe:2.3:a:redhat:codeready_linux_builder_for_arm64_eus:9.2_aarch64:*:*:*:*:*:*:* |
| redhat | codeready_linux_builder_for_ibm_z_systems_eus | 9.0_s390x | cpe:2.3:a:redhat:codeready_linux_builder_for_ibm_z_systems_eus:9.0_s390x:*:*:*:*:*:*:* |
| redhat | codeready_linux_builder_for_ibm_z_systems_eus | 9.2_s390x | cpe:2.3:a:redhat:codeready_linux_builder_for_ibm_z_systems_eus:9.2_s390x:*:*:*:*:*:*:* |
| redhat | codeready_linux_builder_for_power_little_endian_eus | 9.0_ppc64le | cpe:2.3:a:redhat:codeready_linux_builder_for_power_little_endian_eus:9.0_ppc64le:*:*:*:*:*:*:* |
| redhat | codeready_linux_builder_for_power_little_endian_eus | 9.2_ppc64le | cpe:2.3:a:redhat:codeready_linux_builder_for_power_little_endian_eus:9.2_ppc64le:*:*:*:*:*:*:* |
| redhat | software_collections | 1.0 | cpe:2.3:a:redhat:software_collections:1.0:*:*:*:*:*:*:* |
| redhat | enterprise_linux | 8.0 | cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:* |
| redhat | enterprise_linux | 9.0 | cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:* |
| redhat | enterprise_linux_eus | 8.6 | cpe:2.3:o:redhat:enterprise_linux_eus:8.6:*:*:*:*:*:*:* |
| redhat | enterprise_linux_eus | 8.8 | cpe:2.3:o:redhat:enterprise_linux_eus:8.8:*:*:*:*:*:*:* |
| redhat | enterprise_linux_eus | 9.0 | cpe:2.3:o:redhat:enterprise_linux_eus:9.0:*:*:*:*:*:*:* |
| redhat | enterprise_linux_eus | 9.2 | cpe:2.3:o:redhat:enterprise_linux_eus:9.2:*:*:*:*:*:*:* |
| redhat | enterprise_linux_for_arm_64 | 8.0 | cpe:2.3:o:redhat:enterprise_linux_for_arm_64:8.0:*:*:*:*:*:*:* |
| redhat | enterprise_linux_for_arm_64 | 8.8_aarch64 | cpe:2.3:o:redhat:enterprise_linux_for_arm_64:8.8_aarch64:*:*:*:*:*:*:* |
| redhat | enterprise_linux_for_ibm_z_systems | 8.0_s390x | cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems:8.0_s390x:*:*:*:*:*:*:* |
| redhat | enterprise_linux_for_ibm_z_systems_eus | 8.6_s390x | cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems_eus:8.6_s390x:*:*:*:*:*:*:* |
| redhat | enterprise_linux_for_ibm_z_systems_eus | 8.8_s390x | cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems_eus:8.8_s390x:*:*:*:*:*:*:* |
| redhat | enterprise_linux_for_ibm_z_systems_eus | 9.0_s390x | cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems_eus:9.0_s390x:*:*:*:*:*:*:* |
| redhat | enterprise_linux_for_ibm_z_systems_eus | 9.2_s390x | cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems_eus:9.2_s390x:*:*:*:*:*:*:* |
| redhat | enterprise_linux_for_power_little_endian | 8.0_ppc64le | cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian:8.0_ppc64le:*:*:*:*:*:*:* |
| redhat | enterprise_linux_for_power_little_endian_eus | 8.6_ppc64le | cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian_eus:8.6_ppc64le:*:*:*:*:*:*:* |
| redhat | enterprise_linux_for_power_little_endian_eus | 8.8_ppc64le | cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian_eus:8.8_ppc64le:*:*:*:*:*:*:* |
| redhat | enterprise_linux_for_power_little_endian_eus | 9.0_ppc64le | cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian_eus:9.0_ppc64le:*:*:*:*:*:*:* |
| redhat | enterprise_linux_for_power_little_endian_eus | 9.2_ppc64le | cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian_eus:9.2_ppc64le:*:*:*:*:*:*:* |
| redhat | enterprise_linux_server_aus | 8.2 | cpe:2.3:o:redhat:enterprise_linux_server_aus:8.2:*:*:*:*:*:*:* |
| redhat | enterprise_linux_server_aus | 8.4 | cpe:2.3:o:redhat:enterprise_linux_server_aus:8.4:*:*:*:*:*:*:* |
| redhat | enterprise_linux_server_aus | 8.6 | cpe:2.3:o:redhat:enterprise_linux_server_aus:8.6:*:*:*:*:*:*:* |
| redhat | enterprise_linux_server_aus | 9.2 | cpe:2.3:o:redhat:enterprise_linux_server_aus:9.2:*:*:*:*:*:*:* |
| redhat | enterprise_linux_server_tus | 8.2 | cpe:2.3:o:redhat:enterprise_linux_server_tus:8.2:*:*:*:*:*:*:* |
| redhat | enterprise_linux_server_tus | 8.4 | cpe:2.3:o:redhat:enterprise_linux_server_tus:8.4:*:*:*:*:*:*:* |
| redhat | enterprise_linux_server_tus | 8.6 | cpe:2.3:o:redhat:enterprise_linux_server_tus:8.6:*:*:*:*:*:*:* |