CVE-2026-49853
- Source
- https://cve.org/CVERecord?id=CVE-2026-49853
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-49853.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/CVE-2026-49853
- Aliases
- Downstream
AZL (1)
BELL (1)
DEBIAN (1)
ECHO (1)
MGASA (1)
MINI (9)
openSUSE (2)
RLSA (2)
ROOT (1)
SUSE (13)
UBUNTU (1)
- Related
- Published
- 2026-07-14T20:41:32Z
- Modified
- 2026-10-16T02:59:54Z
- Severity
-
- 7.7 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N CVSS Calculator
- Summary
- Tornado: Authorization header forwarded across cross-origin redirects in SimpleAsyncHTTPClient
- Details
-
Tornado is a Python web framework and asynchronous networking library. Prior to 6.5.6, SimpleAsyncHTTPClient shallow-copied redirected requests and removed only the Host header, leaving Authorization, auth_username, auth_password, and auth_mode in place when a redirect changed scheme, host, or port. This issue is fixed in version 6.5.6.
- Database specific
{ "cna_assigner": "GitHub_M", "cwe_ids": [ "CWE-200" ], "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/49xxx/CVE-2026-49853.json" }- References
-
- https://github.com/tornadoweb/tornado/releases/tag/v6.5.6
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/49xxx/CVE-2026-49853.json
- https://github.com/tornadoweb/tornado/security/advisories/GHSA-3x9g-8vmp-wqvf
- https://nvd.nist.gov/vuln/detail/CVE-2026-49853
- https://github.com/tornadoweb/tornado/commit/aba2569f7ed7a6bdbef816658fb6b7182531b751
- https://github.com/tornadoweb/tornado/pull/3626
Affected packages
Git / github.com/tornadoweb/tornado
Affected ranges
- Type
- GIT
- Repo
- https://github.com/tornadoweb/tornado
- Events
-
Introduced0 Unknown introduced commit / All previous commits are affectedFixed
- Database specific
-
Show details
{ "extracted_events": [ { "range": [ { "introduced": "0" }, { "fixed": "6.5.6" } ], "source": "AFFECTED_FIELD", "strategy": "StringRangeExpression" }, { "range": [ { "fixed": "aba2569f7ed7a6bdbef816658fb6b7182531b751" } ], "source": "REFERENCES_COMMIT" }, { "original_tag": "v6.5.6", "range": [ { "fixed": "aba2569f7ed7a6bdbef816658fb6b7182531b751" } ], "source": "REFERENCES_TAG" }, { "range": [ { "introduced": "0" }, { "fixed": "6.5.6" } ], "source": "DESCRIPTION" } ] }
Affected versions
v1.*
v1.0.0
v1.1.0
v1.2.0
v2.*
v2.0.0
v2.1.0
v2.1.1
v2.2.0
v2.3.0
v3.*
v3.0.0
v3.0.1
v3.1.0
v3.2.0
v3.2.0b1
v3.2.0b2
v4.*
v4.0.0
v4.0.0b1
v4.0.0b2
v4.0.0b3
v4.1.0
v4.1.0b1
v4.1.0b2
v4.2.0
v4.2.0b1
v4.3.0
v4.3.0b1
v4.3.0b2
v4.4.0
v4.4.0b1
v4.4.1
v4.5.0
v4.5.1
v5.*
v5.0.0
v5.1.0
v6.*
v6.0.0
v6.0.0b1
v6.1.0
v6.1.0b1
v6.1.0b2
v6.2.0
v6.2.0b1
v6.2.0b2
v6.3.0
v6.3.0b1
v6.3.1
v6.4.0
v6.4.0b1
v6.4.1
v6.5.0
v6.5.0b1
v6.5.1
v6.5.2
v6.5.3
v6.5.4
v6.5.5