How severe is CVE-2017-1000026?

CVE-2017-1000026 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.

Is CVE-2017-1000026 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (79th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-1000026?

CVE-2017-1000026 affects Progress Mixlib-archive. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2017-1000026?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2017-1000026 published?

CVE-2017-1000026 was published on 2017-07-17 and last updated on 2026-06-17.

CVE-2017-1000026

CVE-2017-1000026 is a high-severity vulnerability in Progress Mixlib-archive with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-22.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 2% (79th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-22
Affected product: Progress Mixlib-archive
Published: 2017-07-17
Last modified: 2026-06-17

Description

Chef Software's mixlib-archive versions 0.3.0 and older are vulnerable to a directory traversal attack allowing attackers to overwrite arbitrary files by using ".." in tar archive entries

Frequently asked questions

What is CVE-2017-1000026?: Chef Software's mixlib-archive versions 0.3.0 and older are vulnerable to a directory traversal attack allowing attackers to overwrite arbitrary files by using ".." in tar archive entries
How severe is CVE-2017-1000026?: CVE-2017-1000026 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.
Is CVE-2017-1000026 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (79th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-1000026?: CVE-2017-1000026 affects Progress Mixlib-archive. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2017-1000026?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2017-1000026 published?: CVE-2017-1000026 was published on 2017-07-17 and last updated on 2026-06-17.

References

https://github.com/chef/mixlib-archive/blob/master/CHANGELOG.md

Affected products (1)

cpe:2.3:a:progress:mixlib-archive:*:*:*:*:*:*:*:*

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