LOWCVSS v3.1 3.1Vulnerability
CVE-2026-126347
### Summary Due to differences in the way browsers and Python's `urllib` parse urls, browsers treat a string starting with three or more slashes as a protocol-level redirect, while `urllib` does not. This means that the 6.6.0 fix for the RedirectHandler open redirect (CVE-2026-116578, commit cc75ab0e) is incomplete. Tornado 6.6.1 improves the open-redirect detection to handle this case correctly, as well as fixing a regression in the 6.6.0 implementation.
Properties
- Severity
- low
- Summary
- Tornado: Open redirect via triple-slash redirect paths
- Nvd fetched at
- 2026-11-14T00:40:25.638091+00:00
- Epss score
- 0.00163
- Cvss severity
- LOW
- Cvss score
- 3.1
- Retrieved at
- 2026-11-14T00:51:03+00:00
- Ghsa published
- 2026-11-13T20:31:22Z
- Source url
- https://github.com/advisories/GHSA-5cjw-f85j-cv6r
- Ghsa updated
- 2026-11-13T20:31:24Z
- Ghsa id
- GHSA-5cjw-f85j-cv6r
- Last source
- FIRST EPSS
- Score
- 3.1
- Cvss version
- 3.1
- Cve id
- CVE-2026-126347
- Cvss vector
- CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N
- First seen by Signal
- 2026-11-13T00:03:24+00:00
- Name
- CVE-2026-126347
- Is ghsa only
- false
- Vector
- CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N
Related Entities (3)
AFFECTS (1)
HAS_WEAKNESS (1)
VULNERABLE_TO (1)
Related research
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