Medium
PSF-2026-40
When tarfile extracts a link on a system that doesn't support links, it falls back to extracting a member from the archive. In this case, the filter function is run twice: once for the extracted member, and once with name set to the location of the link. For one of the calls, the return value was ignored. Instead, the member should be skipped if either call returns None.
Announced Group revision 1
Original source ↗PSF-2026-40
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: osv:PSF-2026-40
Structured affected-version data
Original package identities and version rules from this source.
[
{
"ranges": [
{
"repo": "https://github.com/python/cpython",
"type": "GIT",
"events": [
{
"introduced": "0"
},
{
"fixed": "d9565e54b1fc6d63c5be9afd58114499128fa57b"
},
{
"fixed": "fb2f0bbc3b35264f09cc2cb2934b7987527a6bc2"
},
{
"fixed": "9c17bace90f88dfba6d0e2fe23c8e7ae35f83955"
},
{
"fixed": "764fd0af8d9e19d3684a58d2e58bf770f0605036"
},
{
"fixed": "2eb0c2f1dc71847731b6ab30aebefd058d482a7f"
},
{
"fixed": "c1f106d240c4ffcb3608ed0a20e8aba6c865f6d3"
},
{
"fixed": "3105a3498aaf681ce128cf5baf83c2e5574267c5"
},
{
"fixed": "a4919937a4e1e69a0d178909c6f20557eca5d1d0"
}
]
}
],
"versions": [
"v3.14.8",
"v3.15.0rc2",
"v3.11.16",
"v3.10.21",
"v3.12.14",
"v3.13.15",
"v3.14.7",
"v3.15.0rc1",
"v3.15.0b4",
"v3.15.0b3",
"v3.13.14",
"v3.14.6",
"v3.15.0b2",
"v3.14.5",
"v3.15.0b1",
"v3.14.5rc1",
"v3.13.13",
"v3.14.4",
"v3.15.0a8",
"v3.15.0a7",
"v3.12.13",
"v3.10.20",
"v3.11.15",
"v3.15.0a6",
"v3.13.12",
"v3.14.3",
"v3.15.0a5",
"v3.15.0a4",
"v3.15.0a3",
"v3.14.2",
"v3.13.11",
"v3.13.10",
"v3.14.1",
"v3.15.0a2",
"v3.15.0a1",
"v3.13.8",
"v3.11.14",
"v3.10.19",
"v3.12.12",
"v3.14.0",
"v3.14.0rc3",
"v3.13.7",
"v3.14.0rc2",
"v3.13.6",
"v3.14.0rc1",
"v3.14.0b4",
"v3.14.0b3",
"v3.13.5",
"v3.13.4",
"v3.11.13",
"v3.10.18",
"v3.12.11",
"v3.14.0b2",
"v3.14.0b1",
"v3.13.3",
"v3.11.12",
"v3.12.10",
"v3.14.0a7",
"v3.10.17",
"v3.14.0a6",
"v3.14.0a5",
"v3.13.2",
"v3.12.9",
"v3.14.0a4",
"v3.14.0a3",
"v3.13.1",
"v3.12.8",
"v3.10.16",
"v3.11.11",
"v3.14.0a2",
"v3.14.0a1",
"v3.13.0",
"v3.13.0rc3",
"v3.12.7",
"v3.11.10",
"v3.10.15",
"v3.13.0rc2",
"v3.12.6",
"v3.12.5",
"v3.13.0rc1",
"v3.13.0b4",
"v3.13.0b3",
"v3.12.4",
"v3.13.0b2",
"v3.13.0b1",
"v3.13.0a6",
"v3.12.3",
"v3.11.9",
"v3.10.14",
"v3.13.0a5",
"v3.13.0a4",
"v3.12.2",
"v3.11.8",
"v3.13.0a3",
"v3.12.1",
"v3.11.7",
"v3.13.0a2",
"v3.13.0a1",
"v3.11.6",
"v3.12.0",
"v3.12.0rc3",
"v3.12.0rc2",
"v3.11.5",
"v3.10.13",
"v3.12.0rc1",
"v3.12.0b4",
"v3.12.0b3",
"v3.11.4",
"v3.10.12",
"v3.12.0b2",
"v3.12.0b1",
"v3.10.11",
"v3.11.3",
"v3.12.0a7",
"v3.12.0a6",
"v3.10.10",
"v3.11.2",
"v3.12.0a5",
"v3.12.0a4",
"v3.12.0a3",
"v3.10.9",
"v3.11.1",
"v3.12.0a2",
"v3.12.0a1",
"v3.11.0rc2",
"v3.10.8",
"v3.10.7",
"v3.11.0rc1",
"v3.10.6",
"v3.11.0b5",
"v3.11.0b4",
"v3.10.5",
"v3.11.0b3",
"v3.11.0b2",
"v3.11.0b1",
"v3.11.0a7",
"v3.10.4",
"v3.10.3",
"v3.11.0a6",
"v3.11.0a5",
"v3.11.0a4",
"v3.10.2",
"v3.11.0a3",
"v3.10.1",
"v3.10.0rc2",
"v3.10.0rc1",
"v3.10.0b4",
"v3.10.0b3",
"v3.10.0b2",
"v3.10.0b1",
"v3.10.0a7",
"v3.10.0a1",
"v3.9.0a2",
"v3.7.0a2",
"v3.6.0b1",
"v3.6.0a3",
"v3.5.0b1",
"v3.5.0a4",
"v3.5.0a3",
"v3.5.0a2",
"v3.5.0a1",
"v3.4.0b3",
"v3.4.0b2",
"v3.4.0b1",
"v3.4.0a4",
"v3.4.0a3",
"v3.4.0a2",
"v3.4.0a1",
"v3.3.0rc3",
"v3.3.0rc2",
"v3.3.0rc1",
"v3.3.0b2",
"v3.3.0b1",
"v3.3.0a4",
"v3.3.0a3",
"v3.3.0a2",
"v3.2rc3",
"v3.2rc2",
"v3.2rc1",
"v3.2b2",
"v3.2b1",
"v3.2a4",
"v3.2a3",
"v3.2a2",
"v3.2a1",
"v3.1",
"v3.1rc2",
"v3.1rc1",
"v3.1b1",
"v3.1a2",
"v3.1a1",
"v3.0rc3",
"v3.0rc2",
"v3.0rc1",
"v3.0b3",
"v3.0b2",
"v3.0b1",
"v3.0a5",
"v3.0a4",
"v3.0a3",
"v3.0a2",
"v3.0a1",
"v2.4",
"v2.4c1",
"v2.4b2",
"v2.4b1",
"v2.4a3",
"v2.4a2",
"v2.4a1",
"v2.3c2",
"v2.3c1",
"v2.2a3",
"v2.1",
"v2.1c2",
"v2.1c1",
"v2.1b2",
"v2.1b1",
"v2.1a2",
"v2.1a1",
"v2.0",
"v2.0c1",
"v2.0b2",
"v2.0b1",
"v1.6a2",
"v1.6a1",
"v1.5.2",
"v1.5.2c1",
"v1.5.2b2",
"v1.5.2b1",
"v1.5.2a2",
"v1.5.2a1",
"v1.5.1",
"v1.5",
"v1.5b2",
"v1.5b1",
"v1.5a4",
"v1.5a3",
"v1.5a2",
"v1.5a1",
"v1.4",
"v1.4b3",
"v1.4b2",
"v1.4b1",
"v1.3",
"v1.3b1",
"v1.2",
"v1.2b4",
"v1.2b3",
"v1.2b2",
"v1.2b1",
"v1.1.1",
"v1.1",
"v1.0.2",
"v1.0.1",
"v0.9.9",
"v0.9.8"
],
"database_specific": {
"source": "https://github.com/psf/advisory-database/blob/main/advisories/python/PSF-2026-40.json"
}
}
]- Related CVEs
- CVE-2026-87910
Source reference:
/aliases
Publisher severity
No explicit severity was provided.
- Event
- #65277 · Revision 1
- Added to Heist Feed
- Publisher date