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CVE

CVE-2026-26960

node-tar has Arbitrary File Read/Write via Hardlink Target Escape Through Symlink Chain in Extraction
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CVE

CVE-2026-26960

node-tar has Arbitrary File Read/Write via Hardlink Target Escape Through Symlink Chain in Extraction

node-tar is a full-featured Tar for Node.js. When using default options in versions 7.5.7 and below, an attacker-controlled archive can create a hardlink inside the extraction directory that points to a file outside the extraction root, enabling arbitrary file read and write as the extracting user. Severity is high because the primitive bypasses path protections and turns archive extraction into a direct filesystem access primitive. This issue has been fixed in version 7.5.8.

Package Versions Affected

Package Version
patch Availability
No items found.

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CVSS Version

Severity
Base Score
CVSS Version
Score Vector
C
H
U
7.1
-
3.1
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
C
H
U
0
-
3.1
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
C
H
U
7.1
-
3.1
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N

Related Resources

No items found.

References

https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/26xxx/CVE-2026-26960.json, https://github.com/isaacs/node-tar/security/advisories/GHSA-83g3-92jg-28cx, https://nvd.nist.gov/vuln/detail/CVE-2026-26960, https://github.com/isaacs/node-tar/commit/2cb1120bcefe28d7ecc719b41441ade59c52e384, https://github.com/isaacs/node-tar/commit/d18e4e1f846f4ddddc153b0f536a19c050e7499f

Severity

7.1

CVSS Score
0
10

Basic Information

Ecosystem
Base CVSS
7.1
EPSS Probability
0.00008%
EPSS Percentile
0.00794%
Introduced Version
0
Fix Available
6b8eba0ef367ac937e703238daa6df94ae6f823f,6.0.5+ds1+~cs11.3.9-1+deb11u3,6.2.1+~cs7.0.8-1+deb13u1,7.5.8,1:22.22.1-1.amzn2023.0.1,3:12.4.254.21-1.22.22.1.1.amzn2023.0.1,1:10.9.4-1.22.22.1.1.amzn2023.0.1,1:20.20.1-1.amzn2023.0.2,3:11.3.244.8-1.20.20.1.1.amzn2023.0.2,1:10.8.2-1.20.20.1.1.amzn2023.0.2,1:24.14.1-1.amzn2023.0.1,3:13.6.233.17-1.24.14.1.1.amzn2023.0.1,1:11.11.0-1.24.14.1.1.amzn2023.0.1,2.332.0-r0,4.106.3-r5,25.0.2-r2,8.17.10-r10,8.19.11-r1,9.0.8-r10,9.1.10-r5,2.15.0-r12,9.0.4-r3,12.2.0-r2,11.10.1-r0,2.19.4-r15,2.19.5-r0,3.5.0-r5,3.5.0-r3,5.14.3-r7,3.223.0-r1,43.38.0-r1,7.5.7-r10,5.5.0-r5,5.5.0-r6,22.0.3-r2,23.0.2-r1

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