How severe is CVE-2021-29417?

CVE-2021-29417 has a CVSS score of 9.8/10, rated CRITICAL. Immediate patching is strongly recommended.

Which packages are affected by CVE-2021-29417?

CVE-2021-29417 affects the following packages: github.com/liamg/gitjacker (Go). Ecosystems affected: Go.

How do I fix CVE-2021-29417?

Update github.com/liamg/gitjacker to 0.1.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2021-29417 is resolved across your whole dependency graph.

How do I detect CVE-2021-29417 in my Go dependencies?

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

How do I mitigate CVE-2021-29417 if there is no patch (or I can't update yet)?

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.

Is CVE-2021-29417 actively exploited in the wild?

No public exploit code has been indexed for CVE-2021-29417 yet. This does not mean the vulnerability cannot be exploited — absence of public exploits does not imply safety. Apply the recommended fix and use O3 Security to monitor your exposure.

What is the EPSS score for CVE-2021-29417?

CVE-2021-29417 has an EPSS (Exploit Prediction Scoring System) score of 3.8%, placing it in the 90th percentile of all CVEs. EPSS is maintained by FIRST.org and estimates the probability that a vulnerability will be exploited in the wild within the next 30 days. This score indicates relatively lower exploitation probability, though the CVSS severity should still guide your patching priority.

What type of vulnerability is CVE-2021-29417?

CVE-2021-29417 is classified as Path Traversal (CWE-22). This weakness type describe the underlying flaw category, which helps determine the potential impact and the right class of mitigation. This is a high-impact weakness class that often enables remote code execution or data exposure.

When was CVE-2021-29417 published, and has it been updated?

CVE-2021-29417 was published on March 29, 2021 and was last updated on October 20, 2026. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

🐹

🐹 Go

Not in CISA KEV

CRITICAL severity

CVE-2021-29417 — gitjacker

CRITICAL

CVE-2021-29417 is a critical-severity (CVSS 9.8) Path Traversal vulnerability in github.com/liamg/gitjacker. A fix is available for github.com/liamg/gitjacker — see the affected versions and patch details below.

gitjacker arbitrary code execution

Also known asGHSA-4j5x-f394-xx79GO-2023-1911

Published

Mar 29, 2021

Updated

Oct 20, 2026

Affected

1 pkg

Patched

1 / 1

Exploits

None indexed

Exploitation data as of Nov 3, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗

3.8%probability of exploitation in next 30 days

Lower Risk0.00%

Lower risk than most CVEs90th percentile — riskier than 90% of all scored CVEsHighest risk

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/liamg/gitjacker

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

gitjacker before 0.1.0 allows remote attackers to execute arbitrary code via a crafted .git directory because of directory traversal.

Affected Packages

1 total 1 fixed

Ecosystem	Package	Vulnerable range	Fix
🐹Go	`github.com/liamg/gitjacker`	all versions	0.1.0`go get github.com/liamg/gitjacker@v0.1.0`

Affected Products

1 product · 1 configurations

Application

gitjackergitjacker_project

< 0.1.0

range

Detection & mitigation playbook

Open-source dependency

Detect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for github.com/liamg/gitjacker, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update github.com/liamg/gitjacker to 0.1.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2021-29417 is resolved across your whole dependency graph.
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

gitjacker before 0.1.0 allows remote attackers to execute arbitrary code via a crafted .git directory because of directory traversal.

O3 Security · Impact-Aware SCA

Is CVE-2021-29417 in your dependencies?

Find it across Go, including transitive dependencies.

Scan my dependencies How O3 SCA works

CVSS Score

9.8/10CVSS v3 base

Vector breakdown

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Raw vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CWE Classification

CWE-22Path Traversal

Weaponization

No Nuclei template, Metasploit module or public proof-of-concept found.

OpenSSF Scorecard

Package health score

gitjacker

1.9/10

Maintained0/10

Code-Review1/10

Branch-Protection0/10

Assessed Nov 2, 2026

Timeline

Disclosed

Mar 29, 2021

Last updated

Oct 20, 2026

Identifiers

CVE-2021-29417

GHSA-4j5x-f394-xx79

GO-2023-1911

References

Advisorygithub.com · v0.1.0 Advisoryvuln.ryotak.me Advisorynvd.nist.gov · CVE 2021 29417 Fixgithub.com · v0.0.3...v0.1.0

Related vulnerabilities

This CVE is critical severity; 1 of 8 other CVEs with CWE-22 is rated as high or higher (top: critical).

CVE-2026-62331GHSA-4xm8-rg9h-jhq2CVE-2026-9083CVE-2026-115908CVE-2026-118667CVE-2026-118654CVE-2026-116673GHSA-7w82-6f9j-v9jpBrowse all CWE-22

Provenance

Sources

OSV.devNVDFIRST.org (EPSS)

Last verifiedOct 20, 2026

CVE-2021-29417 — gitjacker

EPSS Exploitation Probability

How urgent is this, really

Where this sits among everything scored

Real-World Exposure

Description

Affected Packages

Affected Products

Detection & mitigation playbook

Detect

Fix

Workarounds

Frequently Asked Questions

Is CVE-2021-29417 in your dependencies?