CVE-2026-6667

MEDIUMNVD 4.34.3—
EchelonGraph scoreMEDIUM confidence

Score 4.3 from GitHub Security Advisory published 2026-05-09. NVD baseline CVSS 4.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
4.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 4.3Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

PgBouncer before 1.25.2 did not perform an appropriate authorization check for the KILL_CLIENT admin command. All users with access to the administration console (which itself requires authorization) could run this command. It would have been correct to allow only users listed in the admin_users parameter.

CVSS v3
4.3
EG Score
4.3(medium)
EG Risk
19(Track)
EG Risk 19/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity43% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
21%
KEV
Not listed

Published

May 9, 2026

Last Modified

July 24, 2026

Advisory Details (1)

Auto-updated May 9, 2026
No patch confirmed yet.
generic

PgBouncer changelog

https://www.pgbouncer.org/changelog.html#pgbouncer-125x

Vendor Advisories for CVE-2026-6667(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Affected Packages

(4 across 4 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
pgbouncer1.15.0-1 ... 1.25.2-1 (26 versions)——
Debian:12(1)
PackageVulnerable rangeFixed inDependents
pgbouncer1.18.0-1 ... 1.25.2-1 (18 versions)——
Debian:13(1)
PackageVulnerable rangeFixed inDependents
pgbouncer1.24.1-1, 1.24.1-1+deb13u11.24.1-1+deb13u2—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
pgbouncer1.24.1-1, 1.25.0-1, 1.25.0-2, 1.25.1-11.25.2-1—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 6× in last 7d / 54× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 206 total refreshes for this CVE.

  1. 2026-09-04 05:07 UTCEPSS rescore
  2. 2026-09-02 14:12 UTCEPSS rescore
  3. 2026-09-01 13:54 UTCEPSS rescore
  4. 2026-09-01 04:40 UTCEPSS rescore
  5. 2026-08-30 19:17 UTCEPSS rescore
  6. 2026-08-30 01:22 UTCEPSS rescore
  7. 2026-08-28 21:42 UTCEPSS rescore
  8. 2026-08-26 14:47 UTCEPSS rescore
  9. 2026-08-25 13:49 UTCEPSS rescore
  10. 2026-08-23 18:50 UTCEG score recompute
  11. 2026-08-23 18:50 UTCVendor advisory
  12. 2026-08-23 18:50 UTCGHSA enrichment
  13. 2026-08-23 00:19 UTCEPSS rescore
  14. 2026-08-21 23:49 UTCEPSS rescore
  15. 2026-08-20 22:56 UTCEPSS rescore
  16. 2026-08-19 17:04 UTCEPSS rescore
  17. 2026-08-18 13:49 UTCEPSS rescore
  18. 2026-08-18 13:49 UTCEPSS rescore
  19. 2026-08-17 13:47 UTCEPSS rescore
  20. 2026-08-17 11:28 UTCEG score recompute
  21. 2026-08-17 11:28 UTCVendor advisory
  22. 2026-08-17 11:28 UTCGHSA enrichment
  23. 2026-08-16 14:56 UTCEPSS rescore
  24. 2026-08-16 14:56 UTCEPSS rescore
  25. 2026-08-16 04:31 UTCEG score recompute
Show 75 more
  1. 2026-08-16 04:31 UTCVendor advisory
  2. 2026-08-16 04:31 UTCGHSA enrichment
  3. 2026-08-16 02:15 UTCEPSS rescore
  4. 2026-08-15 01:31 UTCEPSS rescore
  5. 2026-08-14 03:05 UTCEG score recompute
  6. 2026-08-14 03:05 UTCVendor advisory
  7. 2026-08-14 03:05 UTCGHSA enrichment
  8. 2026-08-13 22:00 UTCEPSS rescore
  9. 2026-08-12 16:41 UTCEG score recompute
  10. 2026-08-12 16:41 UTCVendor advisory
  11. 2026-08-12 16:41 UTCGHSA enrichment
  12. 2026-08-12 13:51 UTCEPSS rescore
  13. 2026-08-11 03:16 UTCEG score recompute
  14. 2026-08-11 03:16 UTCVendor advisory
  15. 2026-08-11 03:16 UTCGHSA enrichment
  16. 2026-08-11 00:00 UTCEPSS rescore
  17. 2026-08-10 02:52 UTCEG score recompute
  18. 2026-08-10 02:52 UTCGHSA enrichment
  19. 2026-08-09 13:47 UTCEPSS rescore
  20. 2026-08-09 02:29 UTCEG score recompute
  21. 2026-08-09 02:29 UTCVendor advisory
  22. 2026-08-09 02:29 UTCGHSA enrichment
  23. 2026-08-08 16:37 UTCEPSS rescore
  24. 2026-08-08 02:05 UTCEG score recompute
  25. 2026-08-08 02:05 UTCGHSA enrichment
  26. 2026-08-07 01:41 UTCEG score recompute
  27. 2026-08-07 01:41 UTCVendor advisory
  28. 2026-08-07 01:41 UTCGHSA enrichment
  29. 2026-08-06 13:47 UTCEPSS rescore
  30. 2026-08-05 22:06 UTCEG score recompute
  31. 2026-08-05 22:06 UTCVendor advisory
  32. 2026-08-05 22:06 UTCGHSA enrichment
  33. 2026-08-05 19:17 UTCEPSS rescore
  34. 2026-08-05 19:17 UTCEPSS rescore
  35. 2026-08-04 15:10 UTCEPSS rescore
  36. 2026-08-04 10:39 UTCEPSS rescore
  37. 2026-08-04 03:31 UTCEG score recompute
  38. 2026-08-04 03:31 UTCGHSA enrichment
  39. 2026-08-03 10:36 UTCEPSS rescore
  40. 2026-08-03 03:06 UTCVendor advisory
  41. 2026-08-03 03:06 UTCGHSA enrichment
  42. 2026-08-02 02:38 UTCEG score recompute
  43. 2026-08-02 02:38 UTCVendor advisory
  44. 2026-08-02 02:38 UTCGHSA enrichment
  45. 2026-08-02 02:27 UTCEPSS rescore
  46. 2026-08-01 04:16 UTCEPSS rescore
  47. 2026-07-30 16:28 UTCEPSS rescore
  48. 2026-07-30 01:30 UTCEPSS rescore
  49. 2026-07-28 15:37 UTCEPSS rescore
  50. 2026-07-27 14:14 UTCEPSS rescore
  51. 2026-07-26 14:54 UTCEPSS rescore
  52. 2026-07-26 08:27 UTCEG score recompute
  53. 2026-07-26 08:27 UTCVendor advisory
  54. 2026-07-26 08:26 UTCGHSA enrichment
  55. 2026-07-25 14:18 UTCEPSS rescore
  56. 2026-07-24 14:18 UTCEPSS rescore
  57. 2026-07-24 14:18 UTCEPSS rescore
  58. 2026-07-23 14:18 UTCEPSS rescore
  59. 2026-07-23 14:18 UTCEPSS rescore
  60. 2026-07-23 03:22 UTCEG score recompute
  61. 2026-07-22 14:08 UTCEPSS rescore
  62. 2026-07-22 14:08 UTCEPSS rescore
  63. 2026-07-21 15:25 UTCEPSS rescore
  64. 2026-07-21 15:25 UTCEPSS rescore
  65. 2026-07-20 17:08 UTCEPSS rescore
  66. 2026-07-19 14:31 UTCEPSS rescore
  67. 2026-07-19 02:29 UTCEPSS rescore
  68. 2026-07-18 10:04 UTCEPSS rescore
  69. 2026-07-16 17:03 UTCEPSS rescore
  70. 2026-07-15 16:57 UTCEPSS rescore
  71. 2026-07-15 02:00 UTCEPSS rescore
  72. 2026-07-13 22:31 UTCEPSS rescore
  73. 2026-07-13 06:13 UTCEPSS rescore
  74. 2026-07-13 06:13 UTCEPSS rescore
  75. 2026-07-12 05:46 UTCEPSS rescore

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2026-6667?
CVE-2026-6667 is a medium vulnerability published on May 9, 2026. PgBouncer before 1.25.2 did not perform an appropriate authorization check for the KILLCLIENT admin command. All users with access to the administration console (which itself requires authorization) could run this command. It would have been correct to allow only users listed in the adminusers…
When was CVE-2026-6667 disclosed?
CVE-2026-6667 was first published in the National Vulnerability Database on May 9, 2026, with the most recent update on July 24, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-6667 actively exploited?
CVE-2026-6667 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 79.1% of all scored CVEs.
What is the CVSS score of CVE-2026-6667?
CVE-2026-6667 has a CVSS v3 base score of 4.3 (NVD).
How do I remediate CVE-2026-6667?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-6667, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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