CVE-2026-15342

MEDIUMPre-NVD 6.56.5—
EchelonGraph scoreHIGH confidence

Score 6.5 from GitHub Security Advisory published 2026-07-21. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 6.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — 5 sources updated this week
6.5
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 6.5Exploit: NoneExposed: 0

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

Plane contains a multi‑tenant authorization flaw in its asset‑management API that allows authenticated users from one workspace to access, delete, or duplicate assets belonging to another workspace by providing only the victim workspace slug and asset ID. The affected endpoints return presigned file URLs and enable destructive or duplicative actions without verifying that the requester is a member of the targeted workspace. This enables cross‑tenant data exposure, data deletion, and persistent exfiltration of files into an attacker‑controlled workspace.

CVSS v3
6.5
EG Score
6.5(high)
EG Risk
29(Track)
EG Risk 29/100SSVC: 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
Severity65% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS
13.3%
KEV
Not listed

Published

July 21, 2026

Last Modified

July 23, 2026

Advisory Details (3)

Auto-updated Jul 22, 2026
No patch confirmed yet. Sources: cert.
cert

VU#762226 - Plane contains multi-tenant authorization bypass vulnerability

https://www.kb.cert.org/vuls/id/762226
cert

VU#762226 - Plane contains multi-tenant authorization bypass vulnerability

https://kb.cert.org/vuls/id/762226
generic

GitHub - makeplane/plane: 🔥🔥🔥 Open-source Jira, Linear, Monday, and ClickUp alternative. Plane is a modern project management platform to manage tasks, sprints, docs, and triage. · GitHub

https://github.com/makeplane/plane

Vendor Advisories for CVE-2026-15342(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 64× in last 7d / 64× 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. 2026-07-23 14:18 UTCEPSS rescore
  2. 2026-07-23 03:05 UTCEG score recompute
  3. 2026-07-22 23:05 UTCEG score recompute
  4. 2026-07-22 23:05 UTCGHSA enrichment
  5. 2026-07-22 20:05 UTCEG score recompute▲ 6.50
  6. 2026-07-22 20:05 UTCGHSA enrichment
  7. 2026-07-22 20:00 UTCMITRE cvelistV5CVSS v3 → 6.5 · severity → MEDIUM
  8. 2026-07-22 14:08 UTCEPSS rescore
  9. 2026-07-21 21:17 UTCGHSA enrichment
  10. 2026-07-21 21:08 UTCGHSA enrichment
  11. 2026-07-21 21:06 UTCGHSA enrichment
  12. 2026-07-21 21:04 UTCGHSA enrichment
  13. 2026-07-21 21:00 UTCGHSA enrichment
  14. 2026-07-21 20:54 UTCGHSA enrichment
  15. 2026-07-21 20:52 UTCGHSA enrichment
  16. 2026-07-21 20:42 UTCGHSA enrichment
  17. 2026-07-21 20:41 UTCGHSA enrichment
  18. 2026-07-21 20:40 UTCGHSA enrichment
  19. 2026-07-21 20:38 UTCGHSA enrichment
  20. 2026-07-21 20:36 UTCGHSA enrichment
  21. 2026-07-21 20:29 UTCGHSA enrichment
  22. 2026-07-21 20:28 UTCGHSA enrichment
  23. 2026-07-21 20:25 UTCGHSA enrichment
  24. 2026-07-21 20:12 UTCGHSA enrichment
  25. 2026-07-21 20:10 UTCGHSA enrichment
Show 39 more
  1. 2026-07-21 20:08 UTCGHSA enrichment
  2. 2026-07-21 20:08 UTCGHSA enrichment
  3. 2026-07-21 19:19 UTCGHSA enrichment
  4. 2026-07-21 19:19 UTCNVD update
  5. 2026-07-21 19:18 UTCGHSA enrichment
  6. 2026-07-21 19:15 UTCGHSA enrichment
  7. 2026-07-21 19:14 UTCGHSA enrichment
  8. 2026-07-21 19:12 UTCGHSA enrichment
  9. 2026-07-21 19:12 UTCGHSA enrichment
  10. 2026-07-21 19:10 UTCGHSA enrichment
  11. 2026-07-21 19:09 UTCGHSA enrichment
  12. 2026-07-21 19:08 UTCGHSA enrichment
  13. 2026-07-21 19:07 UTCGHSA enrichment
  14. 2026-07-21 19:07 UTCGHSA enrichment
  15. 2026-07-21 19:05 UTCGHSA enrichment
  16. 2026-07-21 19:05 UTCGHSA enrichment
  17. 2026-07-21 19:04 UTCGHSA enrichment
  18. 2026-07-21 19:03 UTCGHSA enrichment
  19. 2026-07-21 19:01 UTCGHSA enrichment
  20. 2026-07-21 19:00 UTCGHSA enrichment
  21. 2026-07-21 18:57 UTCGHSA enrichment
  22. 2026-07-21 18:57 UTCGHSA enrichment
  23. 2026-07-21 18:55 UTCGHSA enrichment
  24. 2026-07-21 18:52 UTCGHSA enrichment
  25. 2026-07-21 18:50 UTCGHSA enrichment
  26. 2026-07-21 18:41 UTCGHSA enrichment
  27. 2026-07-21 18:39 UTCGHSA enrichment
  28. 2026-07-21 18:38 UTCGHSA enrichment
  29. 2026-07-21 18:37 UTCGHSA enrichment
  30. 2026-07-21 18:36 UTCGHSA enrichment
  31. 2026-07-21 18:34 UTCGHSA enrichment
  32. 2026-07-21 18:33 UTCGHSA enrichment
  33. 2026-07-21 18:33 UTCGHSA enrichment
  34. 2026-07-21 18:31 UTCGHSA enrichment
  35. 2026-07-21 18:31 UTCGHSA enrichment
  36. 2026-07-21 17:38 UTCMITRE cvelistV5
  37. 2026-07-21 17:18 UTCNVD update
  38. 2026-07-21 17:04 UTCEG score recompute
  39. 2026-07-21 17:03 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-15342?
CVE-2026-15342 is a medium vulnerability published on July 21, 2026. Plane contains a multi‑tenant authorization flaw in its asset‑management API that allows authenticated users from one workspace to access, delete, or duplicate assets belonging to another workspace by providing only the victim workspace slug and asset ID. The affected endpoints return presigned…
When was CVE-2026-15342 disclosed?
CVE-2026-15342 was first published in the National Vulnerability Database on July 21, 2026, with the most recent update on July 23, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-15342 actively exploited?
CVE-2026-15342 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 13.3% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-15342?
CVE-2026-15342 has a CVSS v3.1 base score of 6.5 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-15342?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-15342, 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

Explore the affected products and dependency analysis for CVE-2026-15342

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