How severe is CVE-2026-27839?

CVE-2026-27839 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.

Is CVE-2026-27839 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (17th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-27839?

CVE-2026-27839 affects Wger. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-27839?

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

Does CVE-2026-27839 have an EU (EUVD) identifier?

Yes. CVE-2026-27839 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-8907.

When was CVE-2026-27839 published?

CVE-2026-27839 was published on 2026-02-26 and last updated on 2026-06-17.

CVE-2026-27839

CVE-2026-27839 is a medium-severity vulnerability in Wger with a CVSS 3.x base score of 4.3. 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: Medium (CVSS 3.x base score 4.3)
EPSS exploit prediction: 0% (17th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-8907
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. 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 contains a fix for the issue.

Frequently asked questions

What is CVE-2026-27839?: 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 contains a fix for the issue.
How severe is CVE-2026-27839?: CVE-2026-27839 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.
Is CVE-2026-27839 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (17th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-27839?: CVE-2026-27839 affects Wger. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-27839?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-27839 have an EU (EUVD) identifier?: Yes. CVE-2026-27839 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-8907.
When was CVE-2026-27839 published?: CVE-2026-27839 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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