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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.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:7c995d84c06b71e96cdcde8646a0adeab54cb94bed89ce3630e840280067f3d6
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0

Affected products and versions

1 source assertion
{"product":"wger","vendor":"wger-project","versions":[{"status":"affected","version":"<= 2.4"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:bc2be2c83e0ee5c9b0d2d938cb4f4737891372f37fef6581fb14739b2e45a017 · sha256:137720c08bc92843… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":3.1,"baseSeverity":"LOW","confidentialityImpact":"LOW","integrityImpact":"NONE","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:bc2be2c83e0ee5c9b0d2d938cb4f4737891372f37fef6581fb14739b2e45a017 · sha256:137720c08bc92843… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion
{"cweId":"CWE-639","description":"CWE-639: Authorization Bypass Through User-Controlled Key","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:bc2be2c83e0ee5c9b0d2d938cb4f4737891372f37fef6581fb14739b2e45a017 · sha256:137720c08bc92843… · /containers/cna/problemTypes/0/descriptions/0

Source references

2 source assertions
{"name":"https://github.com/wger-project/wger/commit/e964328784e2ee2830a1991d69fadbce86ac9fbf","tags":["x_refsource_MISC"],"url":"https://github.com/wger-project/wger/commit/e964328784e2ee2830a1991d69fadbce86ac9fbf"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:bc2be2c83e0ee5c9b0d2d938cb4f4737891372f37fef6581fb14739b2e45a017 · sha256:137720c08bc92843… · /containers/cna/references/1
{"name":"https://github.com/wger-project/wger/security/advisories/GHSA-42cr-w2gr-m54q","tags":["x_refsource_CONFIRM"],"url":"https://github.com/wger-project/wger/security/advisories/GHSA-42cr-w2gr-m54q"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:bc2be2c83e0ee5c9b0d2d938cb4f4737891372f37fef6581fb14739b2e45a017 · sha256:137720c08bc92843… · /containers/cna/references/0

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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