CVE-2026-90852

HIGHPre-NVD 7.37.3—
EchelonGraph scoreHIGH confidence

Score 7.3 from GitHub Security Advisory published 2026-09-15. a secondary CVSS source baseline 7.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 5 sources updated this weekElevated
7.3EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.3Exploit: Elevated riskExposed: 0

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

A vulnerability has been found in luben zstd-jni up to 1.5.7-13. This vulnerability affects the function ZstdCompressCtx.loadDict of the file ZstdCompressCtx.java of the component Dictionary Sharing. Such manipulation leads to use after free. The attack can be executed remotely. The exploit has been disclosed to the public and may be used. Upgrading to version 1.5.7-14 is able to resolve this issue. The name of the patch is a560131d7834598afd9cea6b7c107bc88e915936. The affected component should be upgraded. The vendor was contacted early, responded in a very professional manner and quickly released a fixed version of the affected product.

CVSS v3
7.3
EG Score
7.3(high)
EG Risk
64(Attend)
EG Risk 64/100SSVC: Attend

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
Severity73% × 45%
Exploitation40% × 40%
Automatability100% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS PROB
0%
EPSS %ILE
25%
KEV
Not listed

Published

September 15, 2026

Last Modified

September 15, 2026

Advisory Details (3)

Auto-updated Sep 15, 2026
Upstream fix merged — awaiting tagged release. Sources: github_commit.
generic

GitHub - luben/zstd-jni: JNI binding for Zstd · GitHub

https://github.com/luben/zstd-jni/
github_commit

commit a560131d7834 (luben/zstd-jni)

Fix landed in luben/zstd-jni commit a560131d7834 — awaiting tagged release

https://github.com/luben/zstd-jni/commit/a560131d7834598afd9cea6b7c107bc88e915936
generic

zstd-jni Cross-Object Use-After-Free in ZstdCompressCtx loadDic · Issue #404 · luben/zstd-jni · GitHub

https://github.com/luben/zstd-jni/issues/404

Vendor Advisories for CVE-2026-90852(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 30× in last 7d / 30× 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. 2026-09-20 05:53 UTCGHSA enrichment
  2. 2026-09-19 18:11 UTCEG score recompute
  3. 2026-09-19 18:11 UTCGHSA enrichment
  4. 2026-09-19 06:29 UTCEG score recompute
  5. 2026-09-19 06:29 UTCGHSA enrichment
  6. 2026-09-18 19:28 UTCEPSS rescore
  7. 2026-09-18 18:47 UTCGHSA enrichment
  8. 2026-09-18 07:05 UTCEG score recompute
  9. 2026-09-18 07:05 UTCGHSA enrichment
  10. 2026-09-17 19:32 UTCEPSS rescore
  11. 2026-09-17 19:23 UTCGHSA enrichment
  12. 2026-09-17 06:43 UTCGHSA enrichment
  13. 2026-09-16 19:01 UTCEG score recompute
  14. 2026-09-16 19:01 UTCGHSA enrichment
  15. 2026-09-16 14:09 UTCEPSS rescore
  16. 2026-09-16 07:20 UTCEG score recompute
  17. 2026-09-16 07:20 UTCGHSA enrichment
  18. 2026-09-16 05:15 UTCEPSS rescore
  19. 2026-09-15 19:38 UTCEG score recompute
  20. 2026-09-15 19:38 UTCGHSA enrichment
  21. 2026-09-15 19:32 UTCNVD updateCVSS v4 → 5.5
  22. 2026-09-15 18:24 UTCEG score recompute
  23. 2026-09-15 18:24 UTCGHSA enrichment
  24. 2026-09-15 18:22 UTCMITRE cvelistV5CVSS v4 → 6.9
  25. 2026-09-15 14:53 UTCEG score recompute
Show 5 more
  1. 2026-09-15 14:53 UTCGHSA enrichment
  2. 2026-09-15 03:30 UTCEG score recompute
  3. 2026-09-15 03:29 UTCNVD updateCVSS v4 → 5.5
  4. 2026-09-15 02:35 UTCEG score recompute
  5. 2026-09-15 02:34 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-90852?
CVE-2026-90852 is a high vulnerability published on September 15, 2026. A vulnerability has been found in luben zstd-jni up to 1.5.7-13. This vulnerability affects the function ZstdCompressCtx.loadDict of the file ZstdCompressCtx.java of the component Dictionary Sharing. Such manipulation leads to use after free. The attack can be executed remotely. The exploit has…
When was CVE-2026-90852 disclosed?
CVE-2026-90852 was first published in the National Vulnerability Database on September 15, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-90852 actively exploited?
CVE-2026-90852 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 75.4% of all scored CVEs.
What is the CVSS score of CVE-2026-90852?
CVE-2026-90852 has a CVSS v3 base score of 7.3 (NVD).
How do I remediate CVE-2026-90852?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-90852, 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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