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Regular-expression DoS when parsing TarFile headers

Type: advisorySources: OSV

There is a MEDIUM severity vulnerability affecting CPython. Regular expressions that allowed excessive backtracking during tarfile.TarFile header parsing are vulnerable to ReDoS via specifically-crafted tar archives.

Products
Not specified
Affected versions
Not specified
Fixed versions
Not specified
CVEs
CVE-2024-6232
Confirmed fixed CVEs
Not specified
Updated in this feed
3 Nov 2026, 00:55 UTC · Revision 1

Source evidence

Regular-expression DoS when parsing TarFile headers

core-osv · Original source

Published 3 Sept 2024, 12:29 UTC

There is a MEDIUM severity vulnerability affecting CPython. Regular expressions that allowed excessive backtracking during tarfile.TarFile header parsing are vulnerable to ReDoS via specifically-crafted tar archives.

osv:CVE-2024-6232
Complete source record
{
  "id": "5d9928595030073296884acafcb709c6f89e0de74bbe0a0a03ae1a2127010477",
  "url": "https://osv.dev/vulnerability/CVE-2024-6232",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Regular-expression DoS when parsing TarFile headers",
    "summary": "There is a MEDIUM severity vulnerability affecting CPython. Regular expressions that allowed excessive backtracking during tarfile.TarFile header parsing are vulnerable to ReDoS via specifically-crafted tar archives.",
    "evidence": "osv:CVE-2024-6232",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2024-6232",
      "aliases": [
        "BIT-libpython-2024-6232",
        "BIT-python-2024-6232",
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        "PSF-2024-11"
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      "modified": "2026-10-28T02:30:24.971317108Z",
      "provider": "osv",
      "references": [
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        "https://mail.python.org/archives/list/security-announce@python.org/thread/JRYFTPRHZRTLMZLWQEUHZSJXNHM4ACTY/",
        "https://nvd.nist.gov/vuln/detail/CVE-2024-6232",
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  "source_id": "core-osv",
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  "published_at": "2024-09-03T12:29:00.102+00:00"
}