CVE-2026-82429

HIGHPre-NVD 7.87.8—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 7.8 under CISA-ADP (Vulnrichment) CVSS v3.1 (NVD's own analysis pending). EPSS exploit probability: 0.1%, top 97% 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
Trending — 5 sources updated this week
7.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.8Exploit: None knownExposed: 0

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

Description

The setuid-root worker-launcher binary adjusts ownership and permissions of worker directories by walking the tree with FTS and calling lchown and chmod on each entry's full pathname while running with an effective uid of 0. Both syscalls re-resolve the path at the time of the call, after FTS has classified the entry, and the trees being walked are owned and writable by the untrusted topology user.

A tenant running code on a supervisor node could therefore replace an intermediate directory component with a symbolic link between classification and the privileged operation, redirecting the root-owned lchown or chmod at an arbitrary file on the host. The operation is repeatable at will, since crashing a worker forces a relaunch and blob updates re-run the walk, so a failed attempt costs the attacker nothing.

This crosses the boundary that supervisor.run.worker.as.user and container isolation are intended to enforce. It is the same defect class as the Hadoop container-executor issues from which this code derives.

Mitigation

Upgrade to 3.1.0, where the privileged walk operates on file descriptors it has already stat'd rather than on pathnames re-resolved at call time.

Users who cannot upgrade immediately should not run untrusted topology code on supervisors configured with supervisor.run.worker.as.user, since the launcher is the boundary being crossed. Note that the launcher must be rebuilt and reinstalled after upgrading; replacing the Java artifacts alone is not sufficient.

Credit

The ASF -- found using Claude agents to study the security of open-source projects, validated and reported by Apache Storm.

CVSS v3
7.8
EG Score
7.8(medium)
EG Risk
35(Track)
EG Risk 35/100SSVC: 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
Severity78% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
3%
KEV
Not listed

Published

September 14, 2026

Last Modified

September 14, 2026

Advisory Details (2)

Auto-updated Sep 14, 2026
No patch confirmed yet.
generic

oss-security - CVE-2026-82429: Apache Storm Worker Launcher: Local Privilege Escalation to Root via a Time-of-Check Race in the Worker Launcher

http://www.openwall.com/lists/oss-security/2026/09/13/9
generic
https://lists.apache.org/thread/9vjqrt28g0mxg304vw6pw46cx72v4rvq

Vendor Advisories for CVE-2026-82429(1)

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

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 26× in last 7d / 26× 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. 2026-09-19 18:47 UTCEG score recompute
  2. 2026-09-19 18:47 UTCGHSA enrichment
  3. 2026-09-19 05:43 UTCEG score recompute
  4. 2026-09-19 05:43 UTCGHSA enrichment
  5. 2026-09-18 19:28 UTCEPSS rescore
  6. 2026-09-18 16:38 UTCGHSA enrichment
  7. 2026-09-18 03:34 UTCEG score recompute
  8. 2026-09-18 03:34 UTCGHSA enrichment
  9. 2026-09-17 14:30 UTCGHSA enrichment
  10. 2026-09-17 01:24 UTCEG score recompute
  11. 2026-09-17 01:24 UTCGHSA enrichment
  12. 2026-09-16 14:08 UTCEPSS rescore
  13. 2026-09-16 12:20 UTCEG score recompute
  14. 2026-09-16 12:20 UTCGHSA enrichment
  15. 2026-09-16 05:15 UTCEPSS rescore
  16. 2026-09-15 23:16 UTCGHSA enrichment
  17. 2026-09-15 10:09 UTCGHSA enrichment
  18. 2026-09-14 21:03 UTCGHSA enrichment
  19. 2026-09-14 20:24 UTCGHSA enrichment
  20. 2026-09-14 20:15 UTCEG score recompute▲ 7.80
  21. 2026-09-14 20:15 UTCGHSA enrichment
  22. 2026-09-14 20:14 UTCMITRE cvelistV5CVSS v3 → 7.8 · severity → HIGH
  23. 2026-09-14 16:24 UTCGHSA enrichment
  24. 2026-09-14 15:21 UTCNVD update
  25. 2026-09-14 14:25 UTCEG score recompute
Show 1 more
  1. 2026-09-14 14:24 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-82429?
CVE-2026-82429 is a high vulnerability published on September 14, 2026. Description The setuid-root worker-launcher binary adjusts ownership and permissions of worker directories by walking the tree with FTS and calling lchown and chmod on each entry's full pathname while running with an effective uid of 0. Both syscalls re-resolve the path at the time of the call,…
When was CVE-2026-82429 disclosed?
CVE-2026-82429 was first published in the National Vulnerability Database on September 14, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-82429 actively exploited?
CVE-2026-82429 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 96.9% of all scored CVEs.
What is the CVSS score of CVE-2026-82429?
CVE-2026-82429 has a CVSS v3.1 base score of 7.8 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-82429?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-82429, 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.

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