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Vulnerabilities

Vulnerability · CVE-2026-114583

tarfile.tar_filter could be bypassed using crafted link entries, including symlinks with empty or directory-like names, to redirect later archive members outside the intended extra

Published Oct 22, 2026 · catalog updated Oct 29, 2026 · tarfile.tar_filter could be bypassed

Last checked Nov 6, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2026-114583. EPSS is 0.26%. Act only if a listed version of tarfile.tar_filter could be bypassed is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (tarfile.tar_filter could be bypassed).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Medium6.9
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.26%
Remediation
Advisory link
Affected products
Alpine:v3.21 python3 · Alpine:v3.22 python3 · Alpine:v3.23 python3 · Alpine:v3.24 python3 · Bitnami libpython

tarfile.tar_filter could be bypassed using crafted link entries, including symlinks with empty or directory-like names, to redirect later archive members outside the intended extraction directory. This allowed a malicious tar archive to cause tarfile.extractall() with filter="tar" to write files outside the destination directory, subject to the permissions of the extracting process. This is the tarfile.tar_filter counterpart of CVE-2026-7774, which covered tarfile.data_filter.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • Alpine:v3.21 python30 → 3.12.16-r0
  • Alpine:v3.22 python30 → 3.12.16-r0
  • Alpine:v3.23 python30 → 3.12.16-r0
  • Alpine:v3.24 python30 → 3.14.10-r0
  • Bitnami libpython0 → 3.11.18

How to fix CVE-2026-114583

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-114583. EPSS is 0.26%. Act only if a listed version of tarfile.tar_filter could be bypassed is installed.

Which versions are affected?

Compare what you have installed with 0 → 3.12.16-r0, 0 → 3.14.10-r0, 0 → 3.11.18. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 0.26%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Oct 22, 2026 · NIST NVD

    Detected

    tarfile.tar_filter could be bypassed using crafted link entries, including symlinks with empty or directory-like names, to redirect later archive members outside the intended extraction directory. This allowed a malicious tar archive to cause tarfile.extractall() with filter="tar" to write files outside the destination directory, subject to the permissions of the extracting process. This is the ta

  2. Oct 23, 2026 · NIST NVD

    Updated

    tarfile.tar_filter could be bypassed using crafted link entries, including symlinks with empty or directory-like names, to redirect later archive members outside the intended extraction directory. This allowed a malicious tar archive to cause tarfile.extractall() with filter="tar" to write files outside the destination directory, subject to the permissions of the extracting process. This is the ta

  3. Oct 27, 2026 · Trivy Vulnerability DB

    Fix available

    python3 fixed in 3.12.16-r0; python3 fixed in 3.14.10-r0

  4. Oct 27, 2026 · Trivy Vulnerability DB

    Fix available

    python3 fixed in 3.12.16-r0

  5. Oct 27, 2026 · Trivy Vulnerability DB

    Fix available

    python3 fixed in 3.14.10-r0

  6. Oct 27, 2026 · Trivy Vulnerability DB

    Updated

    tarfile.tar_filter could be bypassed using crafted link entries, including symlinks with empty or directory-like names, to redirect later archive members outside the intended extraction directory. This allowed a malicious tar archive to cause tarfile.extractall() with filter="tar" to write files outside the destination directory, subject to the permissions of the extracting process. This is the ta

  7. Oct 28, 2026 · Trivy Vulnerability DB

    Fix available

    python3 fixed in 3.12.16-r0; python3 fixed in 3.12.16-r0; python3 fixed in 3.12.16-r0; python3 fixed in 3.14.10-r0

  8. Oct 28, 2026 · Trivy Vulnerability DB

    Updated

    tarfile.tar_filter could be bypassed using crafted link entries, including symlinks with empty or directory-like names, to redirect later archive members outside the intended extraction directory. This allowed a malicious tar archive to cause tarfile.extractall() with filter="tar" to write files outside the destination directory, subject to the permissions of the extracting process. This is the ta

  9. Oct 29, 2026 · OpenSSF OSV / OSV Scanner

    Fix available

    libpython fixed in 3.11.18

  10. Oct 29, 2026 · OpenSSF OSV / OSV Scanner

    Fix available

    libpython fixed in 3.11.18

  11. Oct 29, 2026 · OpenSSF OSV / OSV Scanner

    Updated

    tarfile.tar_filter could be bypassed using crafted link entries, including symlinks with empty or directory-like names, to redirect later archive members outside the intended extraction directory. This allowed a malicious tar archive to cause tarfile.extractall() with filter="tar" to write files outside the destination directory, subject to the permissions of the extracting process. This is the ta

Sources

  • CVE.orgVulnerability recordCVE-2026-114583

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-114583

    30-day exploitation probability 0.26%

    first.org
  • Full DisclosureThreat researchCVE-2026-114583

    Research mention from Full Disclosure. Not confirmation of exploitation.

    seclists.org
  • NIST NVDVulnerability recordCVE-2026-114583

    tarfile.tar_filter could be bypassed using crafted link entries, including symlinks with empty or directory-like names, to redirect later archive members outside the intended extraction directory. This allowed a malicious tar archive to cause tarfile.extractall() with filter="tar

    nvd.nist.gov
  • Openwall OSS SecurityThreat researchCVE-2026-114583

    Research mention from Openwall OSS Security. Not confirmation of exploitation.

    openwall.com
  • OpenSSF OSV / OSV ScannerPackage advisoryALPINE-CVE-2026-114583
    osv.dev
  • OpenSSF OSV / OSV ScannerPackage advisoryBIT-libpython-2026-114583

    tar filter allows writing outside destination via empty-named symlink

    osv.dev
  • Trivy Vulnerability DBPackage advisoryALPINE-CVE-2026-114583

    tarfile.tar_filter could be bypassed using crafted link entries, including symlinks with empty or directory-like names, to redirect later archive members outside the intended extraction directory. This allowed a malicious tar archive to cause tarfile.extractall() with filter="tar

    osv.dev

References

Freshness

Last verified in this catalog Nov 6, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • FIRST EPSSNov 6, 2026
  • Trivy Vulnerability DBOct 31, 2026
  • OpenSSF OSV / OSV ScannerOct 30, 2026
  • OpenSSF OSV / OSV ScannerOct 30, 2026
  • Openwall OSS SecurityOct 25, 2026
  • CVE.orgOct 23, 2026
  • Full DisclosureOct 23, 2026
  • NIST NVDOct 23, 2026