GHSA-5rjg-fvgr-3xxf

Suggest an improvement
Source
https://github.com/advisories/GHSA-5rjg-fvgr-3xxf
Import Source
https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2025/05/GHSA-5rjg-fvgr-3xxf/GHSA-5rjg-fvgr-3xxf.json
JSON Data
https://api.osv.dev/v1/vulns/GHSA-5rjg-fvgr-3xxf
Aliases
Published
2025-05-19T16:52:43Z
Modified
2025-05-19T17:02:42.359593Z
Severity
  • 7.7 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:P CVSS Calculator
Summary
setuptools has a path traversal vulnerability in PackageIndex.download that leads to Arbitrary File Write
Details

Summary

A path traversal vulnerability in PackageIndex was fixed in setuptools version 78.1.1

Details

    def _download_url(self, url, tmpdir):
        # Determine download filename
        #
        name, _fragment = egg_info_for_url(url)
        if name:
            while '..' in name:
                name = name.replace('..', '.').replace('\\', '_')
        else:
            name = "__downloaded__"  # default if URL has no path contents

        if name.endswith('.[egg.zip](http://egg.zip/)'):
            name = name[:-4]  # strip the extra .zip before download

 -->       filename = os.path.join(tmpdir, name)

Here: https://github.com/pypa/setuptools/blob/6ead555c5fb29bc57fe6105b1bffc163f56fd558/setuptools/package_index.py#L810C1-L825C88

os.path.join() discards the first argument tmpdir if the second begins with a slash or drive letter. name is derived from a URL without sufficient sanitization. While there is some attempt to sanitize by replacing instances of '..' with '.', it is insufficient.

Risk Assessment

As easyinstall and packageindex are deprecated, the exploitation surface is reduced. However, it seems this could be exploited in a similar fashion like https://github.com/advisories/GHSA-r9hx-vwmv-q579, and as described by POC 4 in https://github.com/advisories/GHSA-cx63-2mw6-8hw5 report: via malicious URLs present on the pages of a package index.

Impact

An attacker would be allowed to write files to arbitrary locations on the filesystem with the permissions of the process running the Python code, which could escalate to RCE depending on the context.

References

https://huntr.com/bounties/d6362117-ad57-4e83-951f-b8141c6e7ca5 https://github.com/pypa/setuptools/issues/4946

Database specific 
{
    "nvd_published_at": "2025-05-17T16:15:19Z",
    "cwe_ids": [
        "CWE-22"
    ],
    "severity": "HIGH",
    "github_reviewed": true,
    "github_reviewed_at": "2025-05-19T16:52:43Z"
}
References

Affected packages

PyPI / setuptools

Package

Name
setuptools
View open source insights on deps.dev
Purl
pkg:pypi/setuptools

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
78.1.1

Affected versions

0.*

0.6b1
0.6b2
0.6b3
0.6b4
0.6c1
0.6c2
0.6c3
0.6c4
0.6c5
0.6c6
0.6c7
0.6c8
0.6c9
0.6c10
0.6c11
0.7.2
0.7.3
0.7.4
0.7.5
0.7.6
0.7.7
0.7.8
0.8
0.9
0.9.1
0.9.2
0.9.3
0.9.4
0.9.5
0.9.6
0.9.7
0.9.8

1.*

1.0
1.1
1.1.1
1.1.2
1.1.3
1.1.4
1.1.5
1.1.6
1.1.7
1.2
1.3
1.3.1
1.3.2
1.4
1.4.1
1.4.2

2.*

2.0
2.0.1
2.0.2
2.1
2.1.1
2.1.2
2.2

3.*

3.0
3.0.1
3.0.2
3.1
3.2
3.3
3.4
3.4.1
3.4.2
3.4.3
3.4.4
3.5
3.5.1
3.5.2
3.6
3.7
3.7.1
3.8
3.8.1

4.*

4.0
4.0.1

5.*

5.0
5.0.1
5.0.2
5.1
5.2
5.3
5.4
5.4.1
5.4.2
5.5
5.5.1
5.6
5.7
5.8

6.*

6.0.1
6.0.2
6.1

7.*

7.0

8.*

8.0
8.0.1
8.0.2
8.0.3
8.0.4
8.1
8.2
8.2.1
8.3

9.*

9.0
9.0.1
9.1

10.*

10.0
10.0.1
10.1
10.2
10.2.1

11.*

11.0
11.1
11.2
11.3
11.3.1

12.*

12.0
12.0.1
12.0.2
12.0.3
12.0.4
12.0.5
12.1
12.2
12.3
12.4

13.*

13.0
13.0.1
13.0.2

14.*

14.0
14.1
14.1.1
14.2
14.3
14.3.1

15.*

15.0
15.1
15.2

16.*

16.0

17.*

17.0
17.1
17.1.1

18.*

18.0
18.0.1
18.1
18.2
18.3
18.3.1
18.3.2
18.4
18.5
18.6
18.6.1
18.7
18.7.1
18.8
18.8.1

19.*

19.0
19.1
19.1.1
19.2
19.3
19.4
19.4.1
19.5
19.6
19.6.1
19.6.2
19.7

20.*

20.0
20.1
20.1.1
20.2.2
20.3
20.3.1
20.4
20.6.6
20.6.7
20.6.8
20.7.0
20.8.0
20.8.1
20.9.0
20.10.1

21.*

21.0.0
21.1.0
21.2.0
21.2.1
21.2.2

22.*

22.0.0
22.0.1
22.0.2
22.0.4
22.0.5

23.*

23.0.0
23.1.0
23.2.0
23.2.1

24.*

24.0.0
24.0.1
24.0.2
24.0.3
24.1.0
24.1.1
24.2.0
24.2.1
24.3.0
24.3.1

25.*

25.0.0
25.0.1
25.0.2
25.1.0
25.1.1
25.1.2
25.1.3
25.1.4
25.1.5
25.1.6
25.2.0
25.3.0
25.4.0

26.*

26.0.0
26.1.0
26.1.1

27.*

27.0.0
27.1.0
27.1.2
27.2.0
27.3.0
27.3.1

28.*

28.0.0
28.1.0
28.2.0
28.3.0
28.4.0
28.5.0
28.6.0
28.6.1
28.7.0
28.7.1
28.8.0
28.8.1

29.*

29.0.0
29.0.1

30.*

30.0.0
30.1.0
30.2.0
30.2.1
30.3.0
30.4.0

31.*

31.0.0
31.0.1

32.*

32.0.0
32.1.0
32.1.1
32.1.2
32.1.3
32.2.0
32.3.0
32.3.1

33.*

33.1.0
33.1.1

34.*

34.0.0
34.0.1
34.0.2
34.0.3
34.1.0
34.1.1
34.2.0
34.3.0
34.3.1
34.3.2
34.3.3
34.4.0
34.4.1

35.*

35.0.0
35.0.1
35.0.2

36.*

36.0.1
36.1.0
36.1.1
36.2.0
36.2.1
36.2.2
36.2.3
36.2.4
36.2.5
36.2.6
36.2.7
36.3.0
36.4.0
36.5.0
36.6.0
36.6.1
36.7.0
36.7.1
36.7.2
36.8.0

37.*

37.0.0

38.*

38.0.0
38.1.0
38.2.0
38.2.1
38.2.3
38.2.4
38.2.5
38.3.0
38.4.0
38.4.1
38.5.0
38.5.1
38.5.2
38.6.0
38.6.1
38.7.0

39.*

39.0.0
39.0.1
39.1.0
39.2.0

40.*

40.0.0
40.1.0
40.1.1
40.2.0
40.3.0
40.4.0
40.4.1
40.4.2
40.4.3
40.5.0
40.6.0
40.6.1
40.6.2
40.6.3
40.7.0
40.7.1
40.7.2
40.7.3
40.8.0
40.9.0

41.*

41.0.0
41.0.1
41.1.0
41.2.0
41.3.0
41.4.0
41.5.0
41.5.1
41.6.0

42.*

42.0.0
42.0.1
42.0.2

43.*

43.0.0

44.*

44.0.0
44.1.0
44.1.1

45.*

45.0.0
45.1.0
45.2.0
45.3.0

46.*

46.0.0
46.1.0
46.1.1
46.1.2
46.1.3
46.2.0
46.3.0
46.3.1
46.4.0

47.*

47.0.0
47.1.0
47.1.1
47.2.0
47.3.0
47.3.1
47.3.2

48.*

48.0.0

49.*

49.0.0
49.0.1
49.1.0
49.1.1
49.1.2
49.1.3
49.2.0
49.2.1
49.3.0
49.3.1
49.3.2
49.4.0
49.5.0
49.6.0

50.*

50.0.0
50.0.1
50.0.2
50.0.3
50.1.0
50.2.0
50.3.0
50.3.1
50.3.2

51.*

51.0.0
51.1.0
51.1.0.post20201221
51.1.1
51.1.2
51.2.0
51.3.0
51.3.1
51.3.2
51.3.3

52.*

52.0.0

53.*

53.0.0
53.1.0

54.*

54.0.0
54.1.0
54.1.1
54.1.2
54.1.3
54.2.0

56.*

56.0.0
56.1.0
56.2.0

57.*

57.0.0
57.1.0
57.2.0
57.3.0
57.4.0
57.5.0

58.*

58.0.0
58.0.1
58.0.2
58.0.3
58.0.4
58.1.0
58.2.0
58.3.0
58.4.0
58.5.0
58.5.1
58.5.2
58.5.3

59.*

59.0.1
59.1.0
59.1.1
59.2.0
59.3.0
59.4.0
59.5.0
59.6.0
59.7.0
59.8.0

60.*

60.0.0
60.0.1
60.0.2
60.0.3
60.0.4
60.0.5
60.1.0
60.1.1
60.2.0
60.3.0
60.3.1
60.4.0
60.5.0
60.6.0
60.7.0
60.7.1
60.8.0
60.8.1
60.8.2
60.9.0
60.9.1
60.9.2
60.9.3
60.10.0

61.*

61.0.0
61.1.0
61.1.1
61.2.0
61.3.0
61.3.1

62.*

62.0.0
62.1.0
62.2.0
62.3.0
62.3.1
62.3.2
62.3.3
62.3.4
62.4.0
62.5.0
62.6.0

63.*

63.0.0b1
63.0.0
63.1.0
63.2.0
63.3.0
63.4.0
63.4.1
63.4.2
63.4.3

64.*

64.0.0
64.0.1
64.0.2
64.0.3

65.*

65.0.0
65.0.1
65.0.2
65.1.0
65.1.1
65.2.0
65.3.0
65.4.0
65.4.1
65.5.0
65.5.1
65.6.0
65.6.1
65.6.2
65.6.3
65.7.0

66.*

66.0.0
66.1.0
66.1.1

67.*

67.0.0
67.1.0
67.2.0
67.3.1
67.3.2
67.3.3
67.4.0
67.5.0
67.5.1
67.6.0
67.6.1
67.7.0
67.7.1
67.7.2
67.8.0

68.*

68.0.0
68.1.0
68.1.2
68.2.0
68.2.1
68.2.2

69.*

69.0.0
69.0.1
69.0.2
69.0.3
69.1.0
69.1.1
69.2.0
69.3.0
69.3.1
69.4.0
69.4.1
69.4.2
69.5.0
69.5.1

70.*

70.0.0
70.1.0
70.1.1
70.2.0
70.3.0

71.*

71.0.0
71.0.1
71.0.2
71.0.3
71.0.4
71.1.0

72.*

72.0.0
72.1.0
72.2.0

73.*

73.0.0
73.0.1

74.*

74.0.0
74.1.0
74.1.1
74.1.2
74.1.3

75.*

75.0.0
75.1.0
75.2.0
75.3.0
75.3.1
75.3.2
75.4.0
75.5.0
75.6.0
75.7.0
75.8.0
75.8.1
75.8.2
75.9.0
75.9.1

76.*

76.0.0
76.1.0

77.*

77.0.1
77.0.3

78.*

78.0.1
78.0.2
78.1.0