CVE-2023-39135: An issue in Zip Swift v2.1.2 allows attackers to execute a path traversal attack via a crafted zip entry.

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HIGH 7.8DOWNGRADE

CVE-2023-39135 is a high-severity flaw (CVSS 7.8) affecting zip. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

An issue in Zip Swift v2.1.2 allows attackers to execute a path traversal attack via a crafted zip entry.

Why this priority

High severity
Public exploit reference

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	7.8 (High)
Attack vector	Local
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.4% (top 61%)
CISA exploited list	No
Weakness	CWE-22
Published	2023-08-30
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: marmelroy

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2023-08-30 22:15 UTCPublished CVE record published
2026-06-17 06:11 UTCUpdated Record last modified

marmelroy zip DOWNGRADE

Affected: 2.1.2

Fixed in: no fixed release known

Safe to downgrade to: a release before 2.1.2

1. Check installed version

apt-cache policy zip || rpm -q zip || zip --version

2. No fixed release: DOWNGRADE to a release before 2.1.2 (Debian / Ubuntu)

apt-cache madison zip sudo apt install zip=<VERSION_BEFORE_2.1.2> sudo apt-mark hold zip

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list zip sudo dnf downgrade zip-<VERSION_BEFORE_2.1.2> sudo dnf versionlock add zip

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2023-39135?

zip: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2023-39135 being exploited?

CVE-2023-39135 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2023-39135 affect?

CVE-2023-39135 affects zip. Severity is high (CVSS 7.8). An issue in Zip Swift v2.1.2 allows attackers to execute a path traversal attack via a crafted zip entry.

How urgent is CVE-2023-39135?

Priority 42/100. High severity; Public exploit reference

Software pages

Swift vulnerabilities

Related CVEs

CVE-2018-13410 CRITICAL 9.8 DOWNGRADE Info-ZIP Zip 3.0, when the -T and -TT command-line options are used, allows attackers to cause a denial of ser
CVE-2018-13684 HIGH 7.5 MITIGATE The mintToken function of a smart contract implementation for ZIP, an Ethereum token, has an integer overflow

References

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