Answer in brief
CVE-2026-103905 records a High severity (CVSS 8.7) vulnerability in Unauthenticated Plugin Safe Mode Toggle Vulnerability in JTL-Shop. The current sources do not mark it as known exploited. The current feed maps JTL-Software GmbH/JTL-Shop (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 8.7. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps JTL-Software GmbH/JTL-Shop (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| JTL-Software GmbH/JTL-Shopgeneric | >=5.3.0 <5.6.5 || >=5.7.0 <5.7.5 || >=5.8.0 <5.8.2 | 5.6.5, 5.7.5, 5.8.2 |
Published upstream
Oct 14, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 14, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Oct 14, 2026
The authentication middleware of the JTL-Shop administration backend processes the plugin safe mode toggle on the admin logout route before checking whether the requesting user is authenticated. An unauthenticated remote attacker can therefore switch the shop's plugin safe mode on and off, which deactivates all installed plugins and their functionality, such as payment and shipping integrations, resulting in a shop-wide denial of service. The attack requires a single request and can be automated against many installations.
Quoted source text, attributed separately from HOL analysis.