CVE-2026-27839: wger is a free, open-source workout and fitness manager

Q: How do I fix CVE-2026-27839?

wger: upgrade to newer than 2.4. Exact commands for each OS are on this page.

Q: Is CVE-2026-27839 being exploited?

CVE-2026-27839 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-2026-27839 affect?

CVE-2026-27839 affects wger. Severity is medium (CVSS 4.3). wger is a free, open-source workout and fitness manager. In versions up to and including 2.4, three `nutritional_values` action endpoints fetch objects via `Model.objects.get(pk=pk)` — a raw ORM call that bypasses the user-scoped queryset.

Q: How urgent is CVE-2026-27839?

Priority 26/100. Public exploit reference

Routine

MEDIUM 4.3UPGRADE

CVE-2026-27839 is a medium-severity flaw (CVSS 4.3) affecting wger. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

wger is a free, open-source workout and fitness manager. In versions up to and including 2.4, three `nutritional_values` action endpoints fetch objects via `Model.objects.get(pk=pk)` — a raw ORM call that bypasses the user-scoped queryset. Any authenticated user can read another user's private nutrition plan data, including caloric intake and full macro breakdown, by supplying an arbitrary PK. Commit 29876a1954fe959e4b58ef070170e81703dab60e conta

Why this priority

Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	4.3 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.3% (top 77%)
CISA exploited list	No
Weakness	CWE-639
Published	2026-02-26
Last modified	2026-06-17

Publisher (CNA): GitHub, Inc. · Vendor: wger

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

Am I affected?

Timeline

2026-02-26 23:16 UTCPublished CVE record published
2026-06-17 10:27 UTCUpdated Record last modified

wger wger UPGRADE

Affected: <= 2.4

Fixed in: newer than 2.4

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to newer than 2.4 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade wger

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-2026-27839?

wger: upgrade to newer than 2.4. Exact commands for each OS are on this page.

Is CVE-2026-27839 being exploited?

CVE-2026-27839 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-2026-27839 affect?

CVE-2026-27839 affects wger. Severity is medium (CVSS 4.3). wger is a free, open-source workout and fitness manager. In versions up to and including 2.4, three `nutritional_values` action endpoints fetch objects via `Model.objects.get(pk=pk)` — a raw ORM call that bypasses the user-scoped queryset.

How urgent is CVE-2026-27839?

Priority 26/100. Public exploit reference

Related CVEs

CVE-2026-40474 HIGH 7.6 UPGRADE wger is a free, open-source workout and fitness manager
CVE-2026-40353 MEDIUM 5.4 UPGRADE wger is a free, open-source workout and fitness manager
CVE-2026-27838 LOW 3.1 UPGRADE wger is a free, open-source workout and fitness manager
CVE-2026-27835 MEDIUM 4.3 UPGRADE wger is a free, open-source workout and fitness manager

References

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