
CVE catalog
CVE-2026-87910
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 membe
- Severity
- Medium · CVSS 6.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N - Published
- Updated
- Source
- [NVD] · [CVE record]
- EPSS
- 0.50% · Oct 23, 2026
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.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | pypy3 | sid | 8.0.1+dfsg-1 | vulnerable |
| Debian | pypy3 | forky | 8.0.1+dfsg-1 | vulnerable |
| Debian | pypy3 | trixie | 7.3.19+dfsg-2 | vulnerable |
| Debian | pypy3 | bookworm | 7.3.11+dfsg-2+deb12u3 | not affected |
| Debian | python3.11 | bookworm | 3.11.2-6+deb12u8 | not affected |
| Debian | python3.11 | bookworm-security | 3.11.2-6+deb12u9 | not affected |
| Alpine | python3 | 3.21 | 3.12.15-r0 | fixed |
| Alpine | python3 | 3.22 | 3.12.15-r0 | fixed |
| Alpine | python3 | 3.23 | 3.12.15-r0 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | pypy3 | source | sid | (unfixed) | not yet assigned | Not reported | Not reported |
| Debian | pypy3 | source | forky | (unfixed) | not yet assigned | Not reported | Not reported |
| Debian | pypy3 | source | trixie | (unfixed) | not yet assigned | Not reported | Not reported |
| Debian | pypy3 | source | bookworm | Not affected | unimportant | Not reported | Not reported |
| Debian | python3.11 | source | bookworm | Not affected | unimportant | Not reported | Not reported |
| Alpine | python3 | apk | 3.21 | 3.12.15-r0 | Not reported | ALPINE-CVE-2026-87910 | Not reported |
| Alpine | python3 | apk | 3.22 | 3.12.15-r0 | Not reported | ALPINE-CVE-2026-87910 | Not reported |
| Alpine | python3 | apk | 3.23 | 3.12.15-r0 | Not reported | ALPINE-CVE-2026-87910 | Not reported |
Notes
[trixie] pypy3: Minor issue
OpenFactory catalog packages
[Debian 13 (Trixie)]
- [idle-python3.13]Affected
Source package: [python3.13]
Details (4)
3.13.5-2+deb13u3· all · trixieAffected
nvd · python3.13 · debian · 13
3.13.5-2+deb13u3· all · trixieAffected
nvd · python3.13 · debian · 13
3.13.5-2+deb13u4· all · trixie-updatesAffected
nvd · python3.13 · debian · 13
3.13.5-2+deb13u4· all · trixie-updatesAffected
nvd · python3.13 · debian · 13
- [libpython3.13]Affected
Source package: [python3.13]
Details (4)
3.13.5-2+deb13u3· amd64 · trixieAffected
nvd · python3.13 · debian · 13
3.13.5-2+deb13u3· arm64 · trixieAffected
nvd · python3.13 · debian · 13
3.13.5-2+deb13u4· amd64 · trixie-updatesAffected
nvd · python3.13 · debian · 13
3.13.5-2+deb13u4· arm64 · trixie-updatesAffected
nvd · python3.13 · debian · 13
- [libpython3.13-dbg]Affected
Source package: [python3.13]
Details (4)
3.13.5-2+deb13u3· amd64 · trixieAffected
nvd · python3.13 · debian · 13
3.13.5-2+deb13u3· arm64 · trixieAffected
nvd · python3.13 · debian · 13
3.13.5-2+deb13u4· amd64 · trixie-updatesAffected
nvd · python3.13 · debian · 13
3.13.5-2+deb13u4· arm64 · trixie-updatesAffected
nvd · python3.13 · debian · 13
- [libpython3.13-dev]Affected
Source package: [python3.13]
Details (4)
3.13.5-2+deb13u3· amd64 · trixieAffected
nvd · python3.13 · debian · 13
3.13.5-2+deb13u3· arm64 · trixieAffected
nvd · python3.13 · debian · 13
3.13.5-2+deb13u4· amd64 · trixie-updatesAffected
nvd · python3.13 · debian · 13
3.13.5-2+deb13u4· arm64 · trixie-updatesAffected
nvd · python3.13 · debian · 13
- [libpython3.13-minimal]Affected
Source package: [python3.13]
Details (4)
3.13.5-2+deb13u3· amd64 · trixieAffected
nvd · python3.13 · debian · 13
3.13.5-2+deb13u3· arm64 · trixieAffected
nvd · python3.13 · debian · 13
3.13.5-2+deb13u4· amd64 · trixie-updatesAffected
nvd · python3.13 · debian · 13
3.13.5-2+deb13u4· arm64 · trixie-updatesAffected
nvd · python3.13 · debian · 13
- [libpython3.13-stdlib]Affected
Source package: [python3.13]
Details (4)
3.13.5-2+deb13u3· amd64 · trixieAffected
nvd · python3.13 · debian · 13
3.13.5-2+deb13u3· arm64 · trixieAffected
nvd · python3.13 · debian · 13
3.13.5-2+deb13u4· amd64 · trixie-updatesAffected
nvd · python3.13 · debian · 13
3.13.5-2+deb13u4· arm64 · trixie-updatesAffected
nvd · python3.13 · debian · 13
- [libpython3.13-testsuite]Affected
Source package: [python3.13]
Details (4)
3.13.5-2+deb13u3· all · trixieAffected
nvd · python3.13 · debian · 13
3.13.5-2+deb13u3· all · trixieAffected
nvd · python3.13 · debian · 13
3.13.5-2+deb13u4· all · trixie-updatesAffected
nvd · python3.13 · debian · 13
3.13.5-2+deb13u4· all · trixie-updatesAffected
nvd · python3.13 · debian · 13
- [pypy3]Affected
Details (2)
7.3.19+dfsg-2· amd64 · trixieAffected
nvd · pypy3 · debian · 13
7.3.19+dfsg-2· arm64 · trixieAffected
nvd · pypy3 · debian · 13
- [pypy3-dev]Affected
Source package: [pypy3]
Details (2)
7.3.19+dfsg-2· all · trixieAffected
nvd · pypy3 · debian · 13
7.3.19+dfsg-2· all · trixieAffected
nvd · pypy3 · debian · 13
- [pypy3-doc]Affected
Source package: [pypy3]
Details (2)
7.3.19+dfsg-2· all · trixieAffected
nvd · pypy3 · debian · 13
7.3.19+dfsg-2· all · trixieAffected
nvd · pypy3 · debian · 13
- [pypy3-lib]Affected
Source package: [pypy3]
Details (2)
7.3.19+dfsg-2· amd64 · trixieAffected
nvd · pypy3 · debian · 13
7.3.19+dfsg-2· arm64 · trixieAffected
nvd · pypy3 · debian · 13
- [pypy3-lib-testsuite]Affected
Source package: [pypy3]
Details (2)
7.3.19+dfsg-2· all · trixieAffected
nvd · pypy3 · debian · 13
7.3.19+dfsg-2· all · trixieAffected
nvd · pypy3 · debian · 13
- [pypy3-tk]Affected
Source package: [pypy3]
Details (2)
7.3.19+dfsg-2· amd64 · trixieAffected
nvd · pypy3 · debian · 13
7.3.19+dfsg-2· arm64 · trixieAffected
nvd · pypy3 · debian · 13
- [pypy3-venv]Affected
Source package: [pypy3]
Details (2)
7.3.19+dfsg-2· all · trixieAffected
nvd · pypy3 · debian · 13
7.3.19+dfsg-2· all · trixieAffected
nvd · pypy3 · debian · 13
- [python3.13]Affected
Details (4)
3.13.5-2+deb13u3· amd64 · trixieAffected
nvd · python3.13 · debian · 13
3.13.5-2+deb13u3· arm64 · trixieAffected
nvd · python3.13 · debian · 13
3.13.5-2+deb13u4· amd64 · trixie-updatesAffected
nvd · python3.13 · debian · 13
3.13.5-2+deb13u4· arm64 · trixie-updatesAffected
nvd · python3.13 · debian · 13
- [python3.13-dbg]Affected
Source package: [python3.13]
Details (4)
3.13.5-2+deb13u3· amd64 · trixieAffected
nvd · python3.13 · debian · 13
3.13.5-2+deb13u3· arm64 · trixieAffected
nvd · python3.13 · debian · 13
3.13.5-2+deb13u4· amd64 · trixie-updatesAffected
nvd · python3.13 · debian · 13
3.13.5-2+deb13u4· arm64 · trixie-updatesAffected
nvd · python3.13 · debian · 13
- [python3.13-dev]Affected
Source package: [python3.13]
Details (4)
3.13.5-2+deb13u3· amd64 · trixieAffected
nvd · python3.13 · debian · 13
3.13.5-2+deb13u3· arm64 · trixieAffected
nvd · python3.13 · debian · 13
3.13.5-2+deb13u4· amd64 · trixie-updatesAffected
nvd · python3.13 · debian · 13
3.13.5-2+deb13u4· arm64 · trixie-updatesAffected
nvd · python3.13 · debian · 13
- [python3.13-doc]Affected
Source package: [python3.13]
Details (4)
3.13.5-2+deb13u3· all · trixieAffected
nvd · python3.13 · debian · 13
3.13.5-2+deb13u3· all · trixieAffected
nvd · python3.13 · debian · 13
3.13.5-2+deb13u4· all · trixie-updatesAffected
nvd · python3.13 · debian · 13
3.13.5-2+deb13u4· all · trixie-updatesAffected
nvd · python3.13 · debian · 13
- [python3.13-examples]Affected
Source package: [python3.13]
Details (4)
3.13.5-2+deb13u3· all · trixieAffected
nvd · python3.13 · debian · 13
3.13.5-2+deb13u3· all · trixieAffected
nvd · python3.13 · debian · 13
3.13.5-2+deb13u4· all · trixie-updatesAffected
nvd · python3.13 · debian · 13
3.13.5-2+deb13u4· all · trixie-updatesAffected
nvd · python3.13 · debian · 13
- [python3.13-full]Affected
Source package: [python3.13]
Details (4)
3.13.5-2+deb13u3· amd64 · trixieAffected
nvd · python3.13 · debian · 13
3.13.5-2+deb13u3· arm64 · trixieAffected
nvd · python3.13 · debian · 13
3.13.5-2+deb13u4· amd64 · trixie-updatesAffected
nvd · python3.13 · debian · 13
3.13.5-2+deb13u4· arm64 · trixie-updatesAffected
nvd · python3.13 · debian · 13
Observed:
References
- [https://access.redhat.com/errata/RHSA-2026:67607]
- [https://ftp.suse.com/pub/projects/security/csaf/opensuse-su-2026_12125-1.json]
- [https://nvd.nist.gov/vuln/detail/CVE-2026-87910]
- [https://osv.dev/vulnerability/ALPINE-CVE-2026-87910]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2026-87910]
- [https://security-tracker.debian.org/tracker/CVE-2026-87910]
- [https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-3335.json]
[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]