8.2

CVE-2026-23745: node-tar Vulnerable to Arbitrary File Overwrite and Symlink Poisoning via Insufficient Path Sanitization

Modified
AliasesUBUNTU-CVE-2026-23745DEBIAN-CVE-2026-23745CGA-24xx-qp28-2pqv
Published 16-01-2026Last modified 07-09-2026

Vulnerability summary

CVE-2026-23745 is a high (CVSS 8.2) vulnerability in isaacs node-tar. EPSS estimates a 0.38% chance of exploitation in the next 30 days, higher than 31.6% of scored vulnerabilities. 1 public exploit is recorded.

Priority
Prioritisepublic exploit

Public exploit (GitHub, Date unknown)

Source freshness unavailable

How is this decided?
CVSS score
8.2/10
010
High · v4.0 (CVE.org)
EPSS score
0.38%
0%100%
Low · -0.01 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits1github

Advisory lineage

Upstream 0 · Downstream 2 · Related 1
RHSA-2026:18480RHSA-2026:18868CGA-52CJ-4VG5-VCMC

Timeline

  1. 16-01-2026
    PublishedVulnerability first disclosed.
  2. 07-09-2026
    Last modifiedVulnerability information updated.

Description

node-tar is a Tar for Node.js. The node-tar library (<= 7.5.2) fails to sanitize the linkpath of Link (hardlink) and SymbolicLink entries when preservePaths is false (the default secure behavior). This allows malicious archives to bypass the extraction root restriction, leading to Arbitrary File Overwrite via hardlinks and Symlink Poisoning via absolute symlink targets. This vulnerability is fixed in 7.5.3.

CVSS metrics

10 scores · 7 sources · 2 versions

EPSS trend

Probability

0.38%

Chance of exploitation in the next 30 days

Percentile

32%

Versus all other CVEs

30-day change

Decrease -0.01 pp

From 0.38% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

1 found
  • githubUnverified

    Node Tar

    Maturity: poc

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: local access, no authentication, user interaction (CVSS vector). Other conditions: not stated in public data.

Chainguard84 products
  • actions-runner< 2.331.0-r1
  • code-server< 4.106.3-r2
  • drupal-11.3< 11.3.13-r3
  • gitlab-rails-ce-18.1< 18.1.6-r31
  • gitlab-rails-ce-18.10All versions (No fix recorded)
Wolfi30 products
  • code-server< 4.106.3-r2
  • jupyter-base-notebook< 7.6.3-r2
  • katib-earlystopping< 0.19.0-r31
  • katib-suggestion-goptuna-compatAll versions (No fix recorded)
  • katib-suggestion-hyperband< 0.19.0-r31
Isaacs2 products
Debian1 product
  • node-tar< 6.1.13+~cs7.0.5-1+deb12u1 | < 6.2.1+~cs7.0.8-1+deb13u1 | < 6.2.1+ds1+~cs6.1.13-6
Npm1 product
  • tar< 7.5.3
Ubuntu1 product
  • node-tarAll versions (No fix recorded)

6 vendors · 119 products

References

20 links
Show all 20 references