CVE-2026-27838: wger is a free, open-source workout and fitness manager

Q: How do I fix CVE-2026-27838?

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

Q: Is CVE-2026-27838 being exploited?

CVE-2026-27838 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-2026-27838 affect?

CVE-2026-27838 affects wger. Severity is low (CVSS 3.1). wger is a free, open-source workout and fitness manager. Five routine detail action endpoints check a cache before calling `self.get_object()`. In versions up to and including 2.4, ache keys are scoped only by `pk` — no user ID is included.

Q: How urgent is CVE-2026-27838?

Priority 21/100. Public exploit reference

Routine

LOW 3.1UPGRADE

CVE-2026-27838 is a low-severity flaw (CVSS 3.1) 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. Five routine detail action endpoints check a cache before calling `self.get_object()`. In versions up to and including 2.4, ache keys are scoped only by `pk` — no user ID is included. When a victim has previously accessed their routine via the API, an attacker can retrieve the cached response for the same PK without any ownership check. Commit e964328784e2ee2830a1991d69fadbce86ac9fbf contai

Why this priority

Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	3.1 (Low)
Attack vector	Network (remote)
Attack complexity	High
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.3% (top 78%)
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-2026-27838?

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

Is CVE-2026-27838 being exploited?

CVE-2026-27838 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-2026-27838 affect?

CVE-2026-27838 affects wger. Severity is low (CVSS 3.1). wger is a free, open-source workout and fitness manager. Five routine detail action endpoints check a cache before calling `self.get_object()`. In versions up to and including 2.4, ache keys are scoped only by `pk` — no user ID is included.

How urgent is CVE-2026-27838?

Priority 21/100. 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-2026-27839 MEDIUM 4.3 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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