CVE-2026-43978

HIGHPre-NVD 8.18.1—
EchelonGraph scoreMEDIUM confidence

Score 8.1 from GitHub Security Advisory (severity: HIGH) published 2026-05-14. a secondary CVSS source baseline 8.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 sources updated this weekElevated
8.1
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 8.1Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

wger is a free, open-source workout and fitness manager. In versions prior to 2.6, a gym trainer can escalate their session to any higher-privileged account (gym manager, general manager) by chaining two calls to the trainer-login endpoint. Once a trainer performs a legitimate switch into a low-privileged user, the session flag trainer.identity is set and this flag alone bypasses the permission check on all subsequent trainer-login calls. This grants full gym administration capabilities including viewing all member data, modifying contracts, managing gym configuration, and accessing other trainers' and managers' personal information. This issue has been fixed in version 2.6.

CVSS v3
8.1
EG Score
8.1(medium)
EPSS
11.7%
KEV
Not listed

Published

July 16, 2026

Last Modified

July 17, 2026

Advisory Details (1)

Auto-updated Jul 16, 2026
🔬 Proof of concept available. Patch available. Sources: github.
github Patch Available🟡 PoC Available

Privilege escalation via trainer-login session chaining allows gym trainer to impersonate gym manager · Advisory · wger-project/wger · GitHub

https://github.com/wger-project/wger/security/advisories/GHSA-9qpr-vc49-hqg2

Patch Availability(1)

Vendor / EcosystemFixed in / PatchReleasedSource
pipwger—ghsa

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 15× in last 7d / 15× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-22 14:08 UTCEPSS rescore
  2. 2026-07-21 15:24 UTCEPSS rescore
  3. 2026-07-20 17:08 UTCEPSS rescore
  4. 2026-07-19 14:31 UTCEPSS rescore
  5. 2026-07-19 02:32 UTCEG score recompute
  6. 2026-07-19 02:32 UTCGHSA enrichment
  7. 2026-07-19 02:29 UTCEPSS rescore
  8. 2026-07-18 10:04 UTCEPSS rescore
  9. 2026-07-17 12:02 UTCEG score recompute
  10. 2026-07-17 12:02 UTCGHSA enrichment
  11. 2026-07-17 11:02 UTCEG score recompute
  12. 2026-07-17 11:02 UTCGHSA enrichment
  13. 2026-07-16 23:43 UTCEG score recompute
  14. 2026-07-16 23:43 UTCGHSA enrichment
  15. 2026-07-16 23:43 UTCNVD updatefirst tracked

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Frequently asked(5)

What is CVE-2026-43978?
CVE-2026-43978 is a high vulnerability published on July 16, 2026. wger is a free, open-source workout and fitness manager. In versions prior to 2.6, a gym trainer can escalate their session to any higher-privileged account (gym manager, general manager) by chaining two calls to the trainer-login endpoint. Once a trainer performs a legitimate switch into a…
When was CVE-2026-43978 disclosed?
CVE-2026-43978 was first published in the National Vulnerability Database on July 16, 2026, with the most recent update on July 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-43978 actively exploited?
CVE-2026-43978 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 11.7% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-43978?
CVE-2026-43978 has a CVSS v3 base score of 8.1 (NVD).
How do I remediate CVE-2026-43978?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-43978, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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