CVE-2021-33497: Dutchcoders transfer.sh before 1.2.4 allows Directory Traversal for deleting files.

Q: How do I fix CVE-2021-33497?

transfer.sh: upgrade to 1.2.4. Exact commands for each OS are on this page.

Q: Is CVE-2021-33497 being exploited?

CVE-2021-33497 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2021-33497 affect?

CVE-2021-33497 affects transfer.sh. Severity is critical (CVSS 9.1). Dutchcoders transfer.sh before 1.2.4 allows Directory Traversal for deleting files.

Q: How urgent is CVE-2021-33497?

Priority 57/100. Critical severity; Remotely exploitable, no login, no user action

This month

CRITICAL 9.1REMOTEUPGRADE

CVE-2021-33497 is a critical-severity flaw (CVSS 9.1) affecting transfer.sh. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Dutchcoders transfer.sh before 1.2.4 allows Directory Traversal for deleting files.

Why this priority

Critical severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	9.1 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	2.0% (top 19%)
CISA exploited list	No
Weakness	CWE-22
Published	2021-05-24
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: dutchcoders

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

Am I affected?

Timeline

2021-05-24 05:15 UTCPublished CVE record published
2026-06-17 03:54 UTCUpdated Record last modified

dutchcoders transfer.sh UPGRADE

Affected: < 1.2.4

Fixed in: 1.2.4

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy transfer.sh || rpm -q transfer.sh || transfer.sh --version

2. UPGRADE to 1.2.4 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade transfer.sh

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade transfer.sh

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

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-2021-33497?

transfer.sh: upgrade to 1.2.4. Exact commands for each OS are on this page.

Is CVE-2021-33497 being exploited?

CVE-2021-33497 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-2021-33497 affect?

CVE-2021-33497 affects transfer.sh. Severity is critical (CVSS 9.1). Dutchcoders transfer.sh before 1.2.4 allows Directory Traversal for deleting files.

How urgent is CVE-2021-33497?

Priority 57/100. Critical severity; Remotely exploitable, no login, no user action

Related CVEs

CVE-2022-40931 MEDIUM 6.1 DOWNGRADE dutchcoders Transfer.sh 1.4.0 is vulnerable to Cross Site Scripting (XSS).
CVE-2021-33496 MEDIUM 6.1 UPGRADE Dutchcoders transfer.sh before 1.2.4 allows XSS via an inline view.

References

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