CVE-2020-5237: Multiple relative path traversal vulnerabilities in the oneup/uploader-bundle before 1.9.3 and 2.1.5 allow rem

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HIGH 8.8UPGRADE

CVE-2020-5237 is a high-severity flaw (CVSS 8.8) affecting oneupuploaderbundle. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Multiple relative path traversal vulnerabilities in the oneup/uploader-bundle before 1.9.3 and 2.1.5 allow remote attackers to upload, copy, and modify files on the filesystem (potentially leading to arbitrary code execution) via the (1) filename parameter to BlueimpController.php; the (2) dzchunkindex, (3) dzuuid, or (4) filename parameter to DropzoneController.php; the (5) qqpartindex, (6) qqfilename, or (7) qquuid parameter to FineUploaderCont

Why this priority

High severity
EPSS top 10%: very likely to be exploited
Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	8.8 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	3.9% (top 10%)
CISA exploited list	No
Weakness	CWE-23, CWE-22
Published	2020-02-05
Last modified	2026-06-17

Publisher (CNA): GitHub, Inc. · Vendor: 1up

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

Am I affected?

Timeline

2020-02-05 14:15 UTCPublished CVE record published
2026-06-17 03:21 UTCUpdated Record last modified

1up oneupuploaderbundle UPGRADE

Affected: < 1.9.3 · >= 1.9.4 and < 2.1.5

Fixed in: 1.9.3, 2.1.5

Safe to downgrade to: a release before 1.9.4

1. Check installed version

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

2. UPGRADE to 1.9.3 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade oneupuploaderbundle

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade oneupuploaderbundle

Note

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

3. If no update is available yet, DOWNGRADE to a release before 1.9.4 (Debian / Ubuntu)

apt-cache madison oneupuploaderbundle sudo apt install oneupuploaderbundle=<VERSION_BEFORE_1.9.4> sudo apt-mark hold oneupuploaderbundle

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list oneupuploaderbundle sudo dnf downgrade oneupuploaderbundle-<VERSION_BEFORE_1.9.4> sudo dnf versionlock add oneupuploaderbundle

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-2020-5237?

oneupuploaderbundle: upgrade to 1.9.3, 2.1.5. Exact commands for each OS are on this page.

Is CVE-2020-5237 being exploited?

CVE-2020-5237 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-2020-5237 affect?

CVE-2020-5237 affects oneupuploaderbundle. Severity is high (CVSS 8.8). Multiple relative path traversal vulnerabilities in the oneup/uploader-bundle before 1.9.3 and 2.1.5 allow remote attackers to upload, copy, and modify files on the filesystem (potentially leading to arbitrary code execution) via the (1) fi

How urgent is CVE-2020-5237?

Priority 58/100. High severity; EPSS top 10%: very likely to be exploited; Public exploit reference

Software pages

PHP vulnerabilities

References

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