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MEDIUM severity

CVE-2023-43616 — croc

MEDIUMFix: schollz/croc#698

CVE-2023-43616 is a medium-severity (CVSS 5.5) Path Traversal vulnerability in github.com/schollz/croc. 2 public exploit or proof-of-concept references are indexed, so weaponization risk is real. A fix is available for github.com/schollz/croc — see the affected versions and patch details below.

Sender can cause a receiver to overwrite files during ZIP extraction in Croc

Also known asGHSA-8c8w-f7wp-2jr2GO-2023-2071
Published
Updated
Affected
1 pkg
Patched
1 / 1
Exploits
2 known
Exploitation data as of Nov 9, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗
0.4%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs32th percentile — riskier than 32% of all scored CVEsHighest risk
0.00%0.29%0.58%0.87%0.1%0.4%May 26Sep 26Nov 26

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

Where this sits among everything scored

Real-World Exposure

1 pkg affected
🐹github.com/schollz/croc

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects Go packages — download data is not available via public APIs for these ecosystems.

Description

An issue was discovered in Croc through 9.6.5. A sender can cause a receiver to overwrite files during ZIP extraction.

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
🐹Gogithub.com/schollz/crocall versions9.6.16go get github.com/schollz/croc@v9.6.16

Affected Products

1 product · 1 configurations
Application
crocschollz
≤ 9.6.5
range
Exploits & PoCs
2

Research use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.

An issue was discovered in Croc through 9.6.5. A sender can cause a rece…

openwall.comNVDSep 2023

Report on github.com

github.comNVDSep 2023

Detection & mitigation playbook

Open-source dependency

  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for github.com/schollz/croc, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Fix

    Update github.com/schollz/croc to 9.6.16 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2023-43616 is resolved across your whole dependency graph.

  3. Workarounds

    Resolve every user-supplied path to its canonical form and reject anything that escapes the intended directory, and run the component under an account that has no read or write access outside the directory it legitimately serves.

Frequently Asked Questions

An issue was discovered in Croc through 9.6.5. A sender can cause a receiver to overwrite files during ZIP extraction.
O3 Security · Impact-Aware SCA

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CVE-2023-43616: croc — Fixed in 9.6.16