CVE-2026-54545

HIGHPre-NVD 7.17.1—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 7.1 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.1%, top 96% 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
7.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.1Exploit: None knownExposed: 0

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

wakaru is a JavaScript decompiler and unminifier toolkit. From 1.0.0 until 1.4.0, @wakaru/cli sanitizes bundle-controlled module filenames only once before writing extracted modules, so a crafted filename containing overlapping traversal sequences such as ....// collapses to ../ after sanitization and lets the final output path escape the selected output directory, allowing an attacker who can cause a user to run wakaru --unpack on a malicious bundle to write files outside that directory and, depending on the target path and environment, potentially achieve code execution. This issue is fixed in @wakaru/cli 1.4.0.

CVSS v3
7.1
EG Score
7.1(medium)
EG Risk
32(Track)
EG Risk 32/100SSVC: 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
Severity71% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
4%
KEV
Not listed

Published

July 28, 2026

Last Modified

July 30, 2026

Advisory Details (3)

Auto-updated Jul 28, 2026
Patch available. Sources: github_release, github, github_commit.
github Patch Available

@wakaru/cli arbitrary file write during bundle unpack · Advisory · pionxzh/wakaru · GitHub

https://github.com/pionxzh/wakaru/security/advisories/GHSA-7wpj-vvmv-pgm8
github_release Patch Available

v1.4.0

Patch available: pionxzh/wakaru v1.4.0

https://github.com/pionxzh/wakaru/releases/tag/v1.4.0
github_commit Patch Available

commit 1d30383b20a6 (pionxzh/wakaru)

Patch available: pionxzh/wakaru v1.4.0 (contains commit 1d30383b20a6)

https://github.com/pionxzh/wakaru/commit/1d30383b20a6f768786b8ada2f1b0945de13c316

Vendor Advisories for CVE-2026-54545(1)

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

Affected Packages

(1 across 1 ecosystem)
npm(1)
PackageVulnerable rangeFixed inDependents
@wakaru/cli—1.4.0—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 12× in last 7d / 54× 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 14:46 UTCEPSS rescore
  2. 2026-08-25 18:53 UTCEG score recompute
  3. 2026-08-25 13:49 UTCEPSS rescore
  4. 2026-08-24 20:55 UTCEG score recompute
  5. 2026-08-24 09:56 UTCEG score recompute
  6. 2026-08-23 00:43 UTCEG score recompute
  7. 2026-08-23 00:19 UTCEPSS rescore
  8. 2026-08-22 02:44 UTCEG score recompute
  9. 2026-08-21 23:49 UTCEPSS rescore
  10. 2026-08-21 04:46 UTCEG score recompute
  11. 2026-08-20 22:55 UTCEPSS rescore
  12. 2026-08-19 19:47 UTCEG score recompute
  13. 2026-08-19 17:04 UTCEPSS rescore
  14. 2026-08-18 18:39 UTCEG score recompute
  15. 2026-08-18 13:48 UTCEPSS rescore
  16. 2026-08-17 16:47 UTCEG score recompute
  17. 2026-08-17 13:47 UTCEPSS rescore
  18. 2026-08-16 18:36 UTCEG score recompute
  19. 2026-08-16 14:56 UTCEPSS rescore
  20. 2026-08-16 07:36 UTCEG score recompute
  21. 2026-08-16 02:14 UTCEPSS rescore
  22. 2026-08-15 09:39 UTCEG score recompute
  23. 2026-08-15 01:30 UTCEPSS rescore
  24. 2026-08-14 00:42 UTCEG score recompute
  25. 2026-08-13 22:00 UTCEPSS rescore
Show 29 more
  1. 2026-08-12 15:45 UTCEG score recompute
  2. 2026-08-12 13:51 UTCEPSS rescore
  3. 2026-08-11 17:47 UTCEG score recompute
  4. 2026-08-11 06:45 UTCEG score recompute
  5. 2026-08-11 00:00 UTCEPSS rescore
  6. 2026-08-09 21:47 UTCEG score recompute
  7. 2026-08-09 13:46 UTCEPSS rescore
  8. 2026-08-08 23:49 UTCEG score recompute
  9. 2026-08-08 16:37 UTCEPSS rescore
  10. 2026-08-06 16:53 UTCEG score recompute
  11. 2026-08-06 13:47 UTCEPSS rescore
  12. 2026-08-06 05:54 UTCEG score recompute
  13. 2026-08-05 19:17 UTCEPSS rescore
  14. 2026-08-04 20:55 UTCEG score recompute
  15. 2026-08-04 15:10 UTCEPSS rescore
  16. 2026-08-04 10:39 UTCEPSS rescore
  17. 2026-08-03 11:45 UTCEG score recompute
  18. 2026-08-03 10:36 UTCEPSS rescore
  19. 2026-08-02 02:43 UTCEG score recompute
  20. 2026-08-02 02:27 UTCEPSS rescore
  21. 2026-08-01 04:45 UTCEG score recompute
  22. 2026-08-01 04:16 UTCEPSS rescore
  23. 2026-07-30 19:44 UTCEG score recompute
  24. 2026-07-30 16:28 UTCEPSS rescore
  25. 2026-07-30 12:20 UTCEG score recompute
  26. 2026-07-30 01:30 UTCEPSS rescore
  27. 2026-07-28 16:21 UTCEG score recompute
  28. 2026-07-28 16:18 UTCEG score recompute
  29. 2026-07-28 15:22 UTCEG score recompute

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-54545?
CVE-2026-54545 is a high vulnerability published on July 28, 2026. wakaru is a JavaScript decompiler and unminifier toolkit. From 1.0.0 until 1.4.0, @wakaru/cli sanitizes bundle-controlled module filenames only once before writing extracted modules, so a crafted filename containing overlapping traversal sequences such as ....// collapses to ../ after sanitization…
When was CVE-2026-54545 disclosed?
CVE-2026-54545 was first published in the National Vulnerability Database on July 28, 2026, with the most recent update on July 30, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-54545 actively exploited?
CVE-2026-54545 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 95.6% of all scored CVEs.
What is the CVSS score of CVE-2026-54545?
CVE-2026-54545 has a CVSS v3 base score of 7.1 (NVD).
How do I remediate CVE-2026-54545?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-54545, 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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