CVE-2021-39390: Stored XSS in PartKeepr 1.4.0 Edit section in multiple api endpoints via name parameter.

Routine

MEDIUM 5.4DOWNGRADE

CVE-2021-39390 is a medium-severity flaw (CVSS 5.4) affecting partkeepr. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Stored XSS in PartKeepr 1.4.0 Edit section in multiple api endpoints via name parameter.

Why this priority

Public exploit reference

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

Risk facts

CVSS score	5.4 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	Required
EPSS exploit chance	0.7% (top 48%)
CISA exploited list	No
Weakness	CWE-79
Published	2022-05-03
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: partkeepr

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

Am I affected?

Timeline

2022-05-03 13:15 UTCPublished CVE record published
2026-06-17 04:03 UTCUpdated Record last modified

partkeepr partkeepr DOWNGRADE

Affected: 1.4.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.4.0

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 1.4.0 (Debian / Ubuntu)

apt-cache madison partkeepr sudo apt install partkeepr=<VERSION_BEFORE_1.4.0> sudo apt-mark hold partkeepr

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

dnf --showduplicates list partkeepr sudo dnf downgrade partkeepr-<VERSION_BEFORE_1.4.0> sudo dnf versionlock add partkeepr

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-2021-39390?

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

Is CVE-2021-39390 being exploited?

CVE-2021-39390 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-2021-39390 affect?

CVE-2021-39390 affects partkeepr. Severity is medium (CVSS 5.4). Stored XSS in PartKeepr 1.4.0 Edit section in multiple api endpoints via name parameter.

How urgent is CVE-2021-39390?

Priority 37/100. Public exploit reference

Related CVEs

CVE-2022-30899 MEDIUM 4.8 DOWNGRADE A Cross Site Scripting vulnerabilty exists in PartKeepr 1.4.0 via the 'name' field in /api/part_categories.
CVE-2022-22702 MEDIUM 4.3 UPGRADE PartKeepr versions up to v1.4.0, in the functionality to upload attachments using a URL when creating a part d
CVE-2022-22701 MEDIUM 6.5 UPGRADE PartKeepr versions up to v1.4.0, loads attachments using a URL while creating a part and allows the use of the

References

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