Sensitive Cookie Without "HttpOnly" Flag Affecting rucio-webui package, versions [,35.8.3)[36.0.0rc1,38.5.4)[39.0.0rc1,39.3.1)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-PYTHON-RUCIOWEBUI-15366647
- published1 Mar 2026
- disclosed25 Feb 2026
- creditDuncan Woosley
Introduced: 25 Feb 2026
NewCVE-2026-25733 (opens in a new tab)How to fix?
Upgrade rucio-webui to version 35.8.3, 38.5.4, 39.3.1 or higher.
Overview
Affected versions of this package are vulnerable to Sensitive Cookie Without "HttpOnly" Flag via the comment field in the custom rules process. An attacker can execute arbitrary JavaScript in the context of the WebUI by submitting crafted input that is stored by the backend and rendered without proper output encoding when viewed by other users or administrators. This can lead to session token theft, unauthorized actions, or data exfiltration by enticing a victim to view a maliciously crafted rule.