7.5

CVE-2026-59871: isaacs node-tar Incorrect Type Conversion or Cast

CVSS: 7.5v3.1HighAnalyzed
AliasesUBUNTU-CVE-2026-59871DEBIAN-CVE-2026-59871CGA-3v28-4m36-h6q3
Published 08-07-2026Last modified 08-07-2026
Open JSON

Vulnerability summary

CVE-2026-59871 is a high (CVSS 7.5) Incorrect Type Conversion or Cast vulnerability in isaacs node-tar. EPSS estimates a 0.64% chance of exploitation in the next 30 days, higher than 49.9% of scored vulnerabilities. 1 public exploit is recorded.

Overall risk
40/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.5/10
010
High · v3.1 (NVD)
EPSS score
0.64%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1github

Advisory lineage

Upstream 0 · Downstream 0 · Related 1
CGA-8FJF-9H72-4VFP

Timeline

  1. 08-07-2026
    PublishedVulnerability first disclosed.
  2. 08-07-2026
    Last modifiedVulnerability information updated.

Description

node-tar is a tar archive manipulation library for Node.js. Prior to 7.5.18, node-tar coerces all-digit PAX path and linkpath values in src/pax.ts to JavaScript numbers, causing downstream path handling such as normalizeWindowsPath(entry.path).split('/') to throw an uncaught TypeError. This issue is fixed in version 7.5.18.

CVSS metrics

7 scores · 7 sources · 1 version

EPSS trend

Probability

0.64%

Chance of exploitation in the next 30 days

Percentile

50%

Versus all other CVEs

30-day change

0.00 pp

From 0.64% on 20-09-2026

20-09-202620-10-2026
EPSS score
0.64%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

1 found
  • githubUnverified

    Node Tar

    Maturity: poc

Weaknesses

CWE · root cause

Affected systems

Chainguard42 products
  • actions-runner< 2.336.0-r1
  • code-server< 4.129.0-r1
  • gitlab-rails-ce-18.1< 18.1.6-r31
  • gitlab-rails-ce-18.10All versions (No fix recorded)
  • gitlab-rails-ce-18.6All versions (No fix recorded)
Wolfi10 products
  • code-server< 4.129.0-r1
  • jupyter-base-notebook< 7.6.3-r2
  • kubeflow-centraldashboard< 1.10.0-r25
  • lerna< 9.0.7-r11
  • npm< 12.0.0-r1
Isaacs2 products
Debian1 product
  • node-tarAll versions (No fix recorded) | < 7.5.19+~4.0.1-1
Npm1 product
  • tar< 7.5.18
Ubuntu1 product
  • node-tarAll versions (No fix recorded)

6 vendors · 57 products

References

9 links