CVE-2026-13512

MEDIUMPre-NVD 6.36.3—
EchelonGraph scoreHIGH confidence

Score 6.3 from GitHub Security Advisory (severity: LOW) published 2026-06-29. a secondary CVSS source baseline 6.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
6.3
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 6.3Exploit: NoneExposed: 0

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

A vulnerability was identified in Databend up to 1.2.881 on HTTP. This affects the function ClientSessionManager::state_key of the file src/query/service/src/servers/http/v1/session/client_session_manager.rs of the component Tenant Handler. The manipulation leads to authorization bypass. It is possible to initiate the attack remotely. The exploit is publicly available and might be used. The pull request to fix this issue awaits acceptance.

CVSS v3
6.3
EG Score
6.3(high)
EPSS
12.5%
KEV
Not listed

Published

June 28, 2026

Last Modified

June 30, 2026

Advisory Details (2)

Auto-updated Jun 29, 2026
Upstream fix merged — awaiting tagged release. Sources: github_pr.
github_pr

fix(query): scope HTTP session state by tenant

Fix merged in databendlabs/databend PR #19931 on 2026-06-28 — awaiting tagged release

https://github.com/databendlabs/databend/pull/19931
generic

bug: Databend HTTP Client Session State Key Collision · Issue #19930 · databendlabs/databend · GitHub

https://github.com/databendlabs/databend/issues/19930

Vendor Advisories for CVE-2026-13512(1)

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

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 22× in last 7d / 28× 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. 2026-07-06 16:27 UTCEPSS rescore
  2. 2026-07-06 15:07 UTCEG score recompute
  3. 2026-07-06 15:07 UTCGHSA enrichment
  4. 2026-07-06 02:23 UTCEPSS rescore
  5. 2026-07-05 16:08 UTCEG score recompute
  6. 2026-07-05 16:08 UTCGHSA enrichment
  7. 2026-07-05 02:30 UTCEPSS rescore
  8. 2026-07-05 02:30 UTCEPSS rescore
  9. 2026-07-04 17:08 UTCEG score recompute
  10. 2026-07-04 17:07 UTCGHSA enrichment
  11. 2026-07-04 06:31 UTCEPSS rescore
  12. 2026-07-03 18:06 UTCEG score recompute
  13. 2026-07-03 18:06 UTCGHSA enrichment
  14. 2026-07-02 19:03 UTCEG score recompute
  15. 2026-07-02 19:03 UTCGHSA enrichment
  16. 2026-07-01 20:04 UTCEG score recompute
  17. 2026-07-01 20:04 UTCGHSA enrichment
  18. 2026-07-01 15:06 UTCEPSS rescore
  19. 2026-07-01 15:06 UTCEPSS rescore
  20. 2026-06-30 23:22 UTCEPSS rescore
  21. 2026-06-30 21:05 UTCEG score recompute
  22. 2026-06-30 21:04 UTCGHSA enrichment
  23. 2026-06-29 22:05 UTCEG score recompute
  24. 2026-06-29 22:05 UTCGHSA enrichment
  25. 2026-06-29 14:06 UTCEPSS rescore
Show 3 more
  1. 2026-06-29 00:03 UTCNVD updateCVSS v4 → 2.1
  2. 2026-06-28 23:03 UTCEG score recompute
  3. 2026-06-28 23:02 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-13512?
CVE-2026-13512 is a medium vulnerability published on June 28, 2026. A vulnerability was identified in Databend up to 1.2.881 on HTTP. This affects the function ClientSessionManager::statekey of the file src/query/service/src/servers/http/v1/session/clientsession_manager.rs of the component Tenant Handler. The manipulation leads to authorization bypass. It is…
When was CVE-2026-13512 disclosed?
CVE-2026-13512 was first published in the National Vulnerability Database on June 28, 2026, with the most recent update on June 30, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-13512 actively exploited?
CVE-2026-13512 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 12.5% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-13512?
CVE-2026-13512 has a CVSS v3 base score of 6.3 (NVD).
How do I remediate CVE-2026-13512?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-13512, 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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