How severe is CVE-2026-27838?

CVE-2026-27838 has a CVSS 3.x base score of 3.1, rated low severity. It is exploitable over network with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.

Is CVE-2026-27838 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (16th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-27838?

CVE-2026-27838 affects Wger. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-27838?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-27838 have an EU (EUVD) identifier?

Yes. CVE-2026-27838 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-8906.

When was CVE-2026-27838 published?

CVE-2026-27838 was published on 2026-02-26 and last updated on 2026-06-17.

CVE-2026-27838

CVE-2026-27838 is a low-severity vulnerability in Wger with a CVSS 3.x base score of 3.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-639.

Key facts

Severity: Low (CVSS 3.x base score 3.1)
EPSS exploit prediction: 0% (16th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-8906
Weakness: CWE-639
Affected product: Wger
Published: 2026-02-26
Last modified: 2026-06-17

Description

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 contains a patch for the issue.

Frequently asked questions

What is CVE-2026-27838?: 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 contains a patch for the issue.
How severe is CVE-2026-27838?: CVE-2026-27838 has a CVSS 3.x base score of 3.1, rated low severity. It is exploitable over network with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.
Is CVE-2026-27838 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (16th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-27838?: CVE-2026-27838 affects Wger. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-27838?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-27838 have an EU (EUVD) identifier?: Yes. CVE-2026-27838 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-8906.
When was CVE-2026-27838 published?: CVE-2026-27838 was published on 2026-02-26 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:wger:wger:*:*:*:*:*:*:*:*

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