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Vulnerability record · CVE-2026-75859 · published 18 August 2026

CVE-2026-75859: Path traversal vulnerability

CodeWhale versions before 0.8.64 fail to validate file paths in the project config instructions field, allowing attackers to read arbitrary files on the victim's system. A malicious .codewhale/config.toml file in a cloned repository can specify paths outside the workspace that are read and injected into the AI system prompt for exfiltration.

8.7 CVSS 4.0 High EPSS 0.53% · top 57.5% CWE-22 · Path traversal Deferred
8.7CVSS 4.0 base score
0.53%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
3References
8 Sep 2026Last modified by NVD

Description

CodeWhale versions before 0.8.64 fail to validate file paths in the project config instructions field, allowing attackers to read arbitrary files on the victim's system. A malicious .codewhale/config.toml file in a cloned repository can specify paths outside the workspace that are read and injected into the AI system prompt for exfiltration.

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

References

LinkTags
https://github.com/Hmbown/CodeWhale/commit/43563356b98c6b993085554da82e77370160a31c
https://github.com/Hmbown/CodeWhale/security/advisories/GHSA-62f5-cp2p-vq95
https://www.vulncheck.com/advisories/codewhale-before-arbitrary-file-read-via-instructions

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Source: NIST National Vulnerability Database (record CVE-2026-75859), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.