Medium
Conda-build Vulnerable to Path Traversal via Malicious Tar File
Type: advisorySources: OSV
Conda-build contains commands and tools to build conda packages. Prior to version 25.4.0, the conda-build processing logic is vulnerable to path traversal (Tarslip) attacks due to improper sanitization of tar entry paths. Attackers can craft tar archives containing entries with directory traversal sequences to write files outside the intended extraction directory. This could lead to arbitrary file overwrites, privilege escalation, or code execution if sensitive locations are targeted. This issue has been patched in version 25.4.0.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2025-32799
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 4 Nov 2026, 17:03 UTC · Revision 1
Source evidence
Conda-build Vulnerable to Path Traversal via Malicious Tar File
core-osv · Original sourcePublished 16 Jun 2025, 20:23 UTC
Conda-build contains commands and tools to build conda packages. Prior to version 25.4.0, the conda-build processing logic is vulnerable to path traversal (Tarslip) attacks due to improper sanitization of tar entry paths. Attackers can craft tar archives containing entries with directory traversal sequences to write files outside the intended extraction directory. This could lead to arbitrary file overwrites, privilege escalation, or code execution if sensitive locations are targeted. This issue has been patched in version 25.4.0.
osv:CVE-2025-32799
Complete source record
{
"id": "228a82eeb6f7d2d11c911ce205e9247c2c94293048e0c7a78706c80e779e3577",
"url": "https://osv.dev/vulnerability/CVE-2025-32799",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "Conda-build Vulnerable to Path Traversal via Malicious Tar File",
"summary": "Conda-build contains commands and tools to build conda packages. Prior to version 25.4.0, the conda-build processing logic is vulnerable to path traversal (Tarslip) attacks due to improper sanitization of tar entry paths. Attackers can craft tar archives containing entries with directory traversal sequences to write files outside the intended extraction directory. This could lead to arbitrary file overwrites, privilege escalation, or code execution if sensitive locations are targeted. This issue has been patched in version 25.4.0.",
"evidence": "osv:CVE-2025-32799",
"products": [],
"severity": "medium",
"structured": {
"id": "CVE-2025-32799",
"aliases": [
"CVE-2025-32799",
"GHSA-h499-pxgj-qh5h"
],
"metrics": [
{
"type": "CVSS_V4",
"score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:L/VI:H/VA:L/SC:N/SI:N/SA:N/E:P"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/conda/conda-build",
"type": "GIT",
"events": [
{
"introduced": "0"
},
{
"fixed": "a681cacb1a9354040d110351e2e9753a299ac3cd"
},
{
"fixed": "bdf5e0022cec9a0c1378cca3f2dc8c92b4834673"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:anaconda:conda-build:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "0"
},
{
"fixed": "25.4.0"
}
],
"source": "CPE_RANGE"
},
{
"range": [
{
"fixed": "bdf5e0022cec9a0c1378cca3f2dc8c92b4834673"
}
],
"source": "REFERENCES_COMMIT"
}
]
}
}
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"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-32799.json"
}
}
],
"modified": "2026-10-28T02:30:37.821604736Z",
"provider": "osv",
"references": [
"https://github.com/conda/conda-build/blob/834448b995eee02cf1c2e7ca97bcfa9affc77ee5/conda_build/convert.py",
"https://github.com/conda/conda-build/blob/834448b995eee02cf1c2e7ca97bcfa9affc77ee5/conda_build/render.py",
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/32xxx/CVE-2025-32799.json",
"https://github.com/conda/conda-build/security/advisories/GHSA-h499-pxgj-qh5h",
"https://nvd.nist.gov/vuln/detail/CVE-2025-32799",
"https://github.com/conda/conda-build/commit/bdf5e0022cec9a0c1378cca3f2dc8c92b4834673"
],
"provider_metadata": {
"cwe_ids": [
"CWE-22"
],
"cna_assigner": "GitHub_M",
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/32xxx/CVE-2025-32799.json"
}
},
"related_cves": [
{
"value": "CVE-2025-32799",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 505117,
"published_at": "2025-06-16T20:23:02.645+00:00"
}