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Public proof of conceptFix available

CVE-2026-23949

A public proof of concept exists; no exploitation attested.

  • Published2026-01-20
  • Fixed in6.1.0
  • WeaknessCWE-22

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

jaraco.context, an open-source software package that provides some useful decorators and context managers, has a Zip Slip path traversal vulnerability in the `jaraco.context.tarball()` function starting in version 5.2.0 and prior to version 6.1.0. The vulnerability may allow attackers to extract files outside the intended extraction directory when malicious tar archives are processed. The strip_first_component filter splits the path on the first `/` and extracts the second component, while allowing `../` sequences. Paths like `dummy_dir/../../etc/passwd` become `../../etc/passwd`. Note that this suffers from a nested tarball attack as well with multi-level tar files such as `dummy_dir/inner.tar.gz`, where the inner.tar.gz includes a traversal `dummy_dir/../../config/.env` that also gets translated to `../../config/.env`. Version 6.1.0 contains a patch for the issue.

Timeline

dates in UTC
  1. 2026-01-2001:15CVE publishedNVD

Versions per branch

NVD · OSV
Jaraco jaraco.context
BranchAffectedFixed in
6.1≥ 5.2.0, < 6.1.06.1.0

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Products declared by the CNA1 product

As GitHub_M, the CNA that assigned this CVE, declared them in the CVE record; versions as written.

  • jaraco.context
    Affected
    • = >= 5.2.0, < 6.1.0no fix stated

Source: the CNA record (CVE Program), © The MITRE Corporation,CVE Terms of UseCVE recordupdated 2026-01-20

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • airflow-2Chainguardall versions · fixed in 2.11.0-r22
  • airflow-3Wolfiall versions · fixed in 3.1.6-r2
  • airflow-3MinimOSall versions · fixed in 3.1.7-r0and 2 other packages
  • airflow-3CleanStartall versions · fixed in 3.0.6-r1
  • airflow-3Chainguardall versions · fixed in 3.1.6-r2
  • ansible-operatorChainguardall versions · fixed in 1.42.0-r6
  • ansible-operator-fipsChainguardall versions · fixed in 1.42.0-r4
  • apache-beam-python-3.11-sdkChainguardall versions · fixed in 2.71.0-r0

91 more package ranges on OSV.dev

Vendor advisories

  • CVE-2026-23949 Red Hat Product Security

    jaraco.context: jaraco.context: Path traversal via malicious tar archives

Full record on NVD

Fix

  1. Update Jaraco jaraco.context to 6.1.0

Advisories and patches

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

  • NVDCVE recordread 2026-10-23
  • CISA-ADPSSVC decisionpoc2026-01-20
  • CNACVSS 3.18.6known since 2026-10-23
  • CNAweakness (CWE)CWE-22known since 2026-10-23
  • FIRST EPSSEPSS score0.6 %2026-11-09
  • OSVaffected packages—
  • GitHub AdvisoriesadvisoryHIGH2026-01-13

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
Published
2026-01-20
Last Modified
2026-06-17
NVD status
Analyzed
GitHub Advisory
GHSA-58pv-8j8x-9vj2

Frequently asked questions

What is CVE-2026-23949?

jaraco.context, an open-source software package that provides some useful decorators and context managers, has a Zip Slip path traversal vulnerability in the `jaraco.context.tarball()` function starting in version 5.2.0 and prior to version 6.1.0. The vulnerability may allow attackers to extract files outside the intended extraction directory when malicious tar archives are processed. The strip_first_component filter splits the path on the first `/` and extracts the second component, while allowing `../` sequences. Paths like `dummy_dir/../../etc/passwd` become `../../etc/passwd`. Note that this suffers from a nested tarball attack as well with multi-level tar files such as `dummy_dir/inner.tar.gz`, where the inner.tar.gz includes a traversal `dummy_dir/../../config/.env` that also gets translated to `../../config/.env`. Version 6.1.0 contains a patch for the issue.

Is CVE-2026-23949 actively exploited?

A proof-of-concept exploit exists for CVE-2026-23949, but active exploitation has not been confirmed at this time.

What is the CVSS score for CVE-2026-23949?

CVE-2026-23949 has a CVSS v3 base score of 8.6 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N.

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