CVE-2026-65959

MEDIUMPre-NVD 5.35.3—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 5.3 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.3%, top 77% 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: epss, secondary
5.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.3Exploit: None knownExposed: 0

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

Vitess is a database clustering system for horizontal scaling of MySQL. In 24.0.2 and earlier, the /debug/vrlog endpoint registered by addHttpEndpoint() in go/vt/vttablet/tabletmanager/vreplication/vrlog.go invokes vrlogStatsHandler() without acl.CheckAccessHTTP(r, acl.DEBUGGING), unlike comparable debug endpoints. A remote caller who can reach the vttablet debug HTTP port can bypass the configured security policy and stream VrLogStats data produced from NewVrLogStats().Send(), including literal SQL statements and bound application values from MoveTables, Reshard, Materialize, and vitess-strategy Online DDL workflows

CVSS v3
5.3
EG Score
5.3(medium)
EG Risk
28(Track)
EG Risk 28/100SSVC: 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
Severity53% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
23%
KEV
Not listed

Published

August 18, 2026

Last Modified

August 18, 2026

Advisory Details (4)

Auto-updated Aug 18, 2026
Patch available. Sources: github, github_commit.
github_commit

commit d929225a4500 (vitessio/vitess)

Fix landed in vitessio/vitess commit d929225a4500 — awaiting tagged release

https://github.com/vitessio/vitess/commit/d929225a450027406687d27af8dca45620945ceb
github_commit

commit 657662e78bde (vitessio/vitess)

Fix landed in vitessio/vitess commit 657662e78bde — awaiting tagged release

https://github.com/vitessio/vitess/commit/657662e78bde1c82df680e9cc43a686d619f8094
github_commit

commit 4c58cd70edc6 (vitessio/vitess)

Fix landed in vitessio/vitess commit 4c58cd70edc6 — awaiting tagged release

https://github.com/vitessio/vitess/commit/4c58cd70edc6b03d61cb65842c342ac08341e64f
github Patch Available

Missing authorization on vttablet /debug/vrlog exposes live VReplication SQL data · Advisory · vitessio/vitess · GitHub

https://github.com/vitessio/vitess/security/advisories/GHSA-mhc4-g3wh-cw7m

Affected Packages

(1 across 1 ecosystem)
Go(1)
PackageVulnerable rangeFixed inDependents
vitess.io/vitess———

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 11× in last 7d / 16× 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.

  1. 2026-08-26 20:12 UTCEG score recompute
  2. 2026-08-26 14:47 UTCEPSS rescore
  3. 2026-08-25 20:03 UTCEG score recompute
  4. 2026-08-25 13:49 UTCEPSS rescore
  5. 2026-08-24 19:55 UTCEG score recompute
  6. 2026-08-23 19:50 UTCEG score recompute
  7. 2026-08-23 00:19 UTCEPSS rescore
  8. 2026-08-22 19:45 UTCEG score recompute
  9. 2026-08-21 23:49 UTCEPSS rescore
  10. 2026-08-21 19:40 UTCEG score recompute
  11. 2026-08-20 22:56 UTCEPSS rescore
  12. 2026-08-19 19:30 UTCEG score recompute
  13. 2026-08-19 17:04 UTCEPSS rescore
  14. 2026-08-18 19:24 UTCEG score recompute
  15. 2026-08-18 18:29 UTCEG score recompute
  16. 2026-08-18 18:28 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-65959?
CVE-2026-65959 is a medium vulnerability published on August 18, 2026. Vitess is a database clustering system for horizontal scaling of MySQL. In 24.0.2 and earlier, the /debug/vrlog endpoint registered by addHttpEndpoint() in go/vt/vttablet/tabletmanager/vreplication/vrlog.go invokes vrlogStatsHandler() without acl.CheckAccessHTTP(r, acl.DEBUGGING), unlike comparable…
When was CVE-2026-65959 disclosed?
CVE-2026-65959 was first published in the National Vulnerability Database on August 18, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-65959 actively exploited?
CVE-2026-65959 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 76.5% of all scored CVEs.
What is the CVSS score of CVE-2026-65959?
CVE-2026-65959 has a CVSS v3 base score of 5.3 (NVD).
How do I remediate CVE-2026-65959?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-65959, 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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