CVE-2026-33816

CRITICALPre-NVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 9.8 under CISA-ADP (Vulnrichment) CVSS v3.1 (NVD's own analysis pending). EPSS exploit probability: 0.6%, top 55% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: cisa-adp, epss
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 9.8Exploit: None knownExposed: 0

A fix is available — apply it.

Memory-safety vulnerability in github.com/jackc/pgx/v5.

CVSS v3
9.8
EG Score
9.8(medium)
EG Risk
59(Track)
EG Risk 59/100SSVC: 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
Severity98% × 45%
Exploitation1% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
45%
KEV
Not listed

Published

April 7, 2026

Last Modified

September 11, 2026

Advisory Details (9)

Auto-updated Sep 18, 2026
No patch confirmed yet.
generic

GO-2026-4772 - Go Packages

https://pkg.go.dev/vuln/GO-2026-4772
redhat Patch Available
https://access.redhat.com/errata/RHSA-2026:24475
redhat Patch Available
https://access.redhat.com/errata/RHSA-2026:22423
redhat Patch Available

Affected: Red Hat Enterprise Linux 10.

https://access.redhat.com/errata/RHSA-2026:19137
redhat Patch Available
https://access.redhat.com/errata/RHSA-2026:17789
redhat Patch Available
https://access.redhat.com/errata/RHSA-2026:13829
redhat Patch Available
https://access.redhat.com/errata/RHSA-2026:13791
redhat Patch Available
https://access.redhat.com/errata/RHSA-2026:11217
redhat Patch Available
https://access.redhat.com/errata/RHSA-2026:11070

Vendor Advisories for CVE-2026-33816(20)

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

Patch Availability(21)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatcustom-metrics-autoscaler/custom-metrics-autoscaler-rhel9-operator:17882901212026-09-02redhat
redhatflightctl-0:1.1.3-1.el9em2026-07-16redhat
redhatrhem/flightctl-worker-rhel10:17841949712026-07-16redhat
redhatodf4/rook-ceph-rhel9-operator:17836692192026-07-16redhat
redhatrhem/flightctl-worker-rhel9:17841277752026-07-15redhat
redhatflightctl-0:1.0.3-1.el9em2026-07-08redhat
redhatopenshift-pipelines/pipelines-results-api-rhel9:17806415742026-06-17redhat
redhatcustom-metrics-autoscaler/custom-metrics-autoscaler-rhel9-operator:17799535352026-06-17redhat
redhatrhacm2/acm-grafana-rhel9:17809268052026-06-11redhat
redhatmulticluster-globalhub/multicluster-globalhub-grafana-rhel9:17799252732026-06-08redhat
redhatrhacm2/acm-grafana-rhel9:17806770032026-06-08redhat
redhatrhtas/trillian-logsigner-rhel9:17800535722026-06-08redhat
redhatrhtas/updatetree-rhel9:17800535722026-06-08redhat
redhatrhtas/createtree-rhel9:17800535722026-06-08redhat
redhatmulticluster-globalhub/multicluster-globalhub-rhel9-operator:17792099922026-06-02redhat
redhatcryostat/cryostat-storage-rhel9:4.2.0-132026-05-26redhat
redhatgo-fdo-server-0:1.0.1-1.el10_22026-05-19redhat
redhatgo-fdo-server-main-1.0.1-0.1.hum12026-05-06redhat
redhatadvanced-cluster-security/rhacs-scanner-v4-rhel8:17779866302026-05-05redhat
redhatadvanced-cluster-security/rhacs-scanner-v4-rhel8:17779764892026-05-05redhat
redhatadvanced-cluster-security/rhacs-scanner-v4-rhel8:17773077912026-04-27redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(2 across 2 ecosystems)
Debian:14(1)
PackageVulnerable rangeFixed inDependents
golang-github-jackc-pgx-v55.8.0-15.9.2-1—
Go(1)
PackageVulnerable rangeFixed inDependents
github.com/jackc/pgx/v5—5.9.0—

Weakness Classification(1)

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

Additional Vendor Advisories

(2)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 8× in last 7d / 52× 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 275 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-33816?
CVE-2026-33816 is a critical vulnerability published on April 7, 2026. Memory-safety vulnerability in github.com/jackc/pgx/v5.
When was CVE-2026-33816 disclosed?
CVE-2026-33816 was first published in the National Vulnerability Database on April 7, 2026, with the most recent update on September 11, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-33816 actively exploited?
CVE-2026-33816 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 54.6% of all scored CVEs.
What is the CVSS score of CVE-2026-33816?
CVE-2026-33816 has a CVSS v3.1 base score of 9.8 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-33816?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-33816, 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

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-33816

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