Vulnerability-Lookup

SUSE-SU-2026:1162-1

Vulnerability from csaf_suse - Published: 2026-03-31 22:02 - Updated: 2026-03-31 22:02

Summary

Security update for python-tornado

Severity

Important

Notes

Title of the patch: Security update for python-tornado

Description of the patch: This update for python-tornado fixes the following issues: - CVE-2025-67724: missing validation of the supplied reason phrase (bsc#1254903). - CVE-2025-67725: Denial of Service (DoS) via maliciously crafted HTTP request caused by the HTTPHeaders.add method (bsc#1254905). - CVE-2026-31958: parsing large multipart bodies with many parts can cause a denial of service (bsc#1259553). - incomplete validation of cookie attributes allows for injection of user-controlled values in other cookie attributes (bsc#1259630).

Patchnames: SUSE-2026-1162,SUSE-SLE-Manager-Tools-12-2026-1162

CVE-2025-67724

5.4 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N

Vendor Fix To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

CVE-2025-67725

7.5 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Vendor Fix To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

CVE-2026-31958

7.5 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Vendor Fix To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

References

URL

Category

	https://www.suse.com/support/security/rating/	external
	https://ftp.suse.com/pub/projects/security/csaf/s…	self
	https://www.suse.com/support/update/announcement/…	self
	https://lists.suse.com/pipermail/sle-security-upd…	self
	https://bugzilla.suse.com/1254903	self
	https://bugzilla.suse.com/1254905	self
	https://bugzilla.suse.com/1259553	self
	https://bugzilla.suse.com/1259630	self
	https://www.suse.com/security/cve/CVE-2025-67724/	self
	https://www.suse.com/security/cve/CVE-2025-67725/	self
	https://www.suse.com/security/cve/CVE-2026-31958/	self
	https://www.suse.com/security/cve/CVE-2025-67724	external
	https://bugzilla.suse.com/1254903	external
	https://www.suse.com/security/cve/CVE-2025-67725	external
	https://bugzilla.suse.com/1254905	external
	https://www.suse.com/security/cve/CVE-2026-31958	external
	https://bugzilla.suse.com/1259552	external

JSON

To clipboard

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CVE-2026-31958 (GCVE-0-2026-31958)

Vulnerability from cvelistv5 – Published: 2026-03-11 19:27 – Updated: 2026-04-01 14:32

Title

Tornado has a DoS due to too many multipart parts

Summary

Tornado is a Python web framework and asynchronous networking library. In versions of Tornado prior to 6.5.5, the only limit on the number of parts in multipart/form-data is the max_body_size setting (default 100MB). Since parsing occurs synchronously on the main thread, this creates the possibility of denial-of-service due to the cost of parsing very large multipart bodies with many parts. This vulnerability is fixed in 6.5.5.

Severity ?

8.7 (High)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

CWE

CWE-400 - Uncontrolled Resource Consumption

Assigner

GitHub_M

References

URL

Tags

https://github.com/tornadoweb/tornado/security/ad…

x_refsource_CONFIRM

Impacted products

	Vendor	Product	Version
	tornadoweb	tornado	Affected: < 6.5.5

Show details on NVD website

JSON

To clipboard

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CVE-2025-67724 (GCVE-0-2025-67724)

Vulnerability from cvelistv5 – Published: 2025-12-12 05:36 – Updated: 2025-12-18 18:53

Title

Tornado vulnerable to Header Injection and XSS via reason argument

Summary

Tornado is a Python web framework and asynchronous networking library. In versions 6.5.2 and below, the supplied reason phrase is used unescaped in HTTP headers (where it could be used for header injection) or in HTML in the default error page (where it could be used for XSS) and can be exploited by passing untrusted or malicious data into the reason argument. Used by both RequestHandler.set_status and tornado.web.HTTPError, the argument is designed to allow applications to pass custom "reason" phrases (the "Not Found" in HTTP/1.1 404 Not Found) to the HTTP status line (mainly for non-standard status codes). This issue is fixed in version 6.5.3.

Severity ?

5.4 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N

CWE

CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CWE-644 - Improper Neutralization of HTTP Headers for Scripting Syntax

Assigner

GitHub_M

References

URL

Tags

	https://github.com/tornadoweb/tornado/security/ad…	x_refsource_CONFIRM
	https://github.com/tornadoweb/tornado/commit/9c16…	x_refsource_MISC
	https://github.com/tornadoweb/tornado/releases/ta…	x_refsource_MISC

Impacted products

	Vendor	Product	Version
	tornadoweb	tornado	Affected: < 6.5.3

Show details on NVD website

JSON

To clipboard

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CVE-2025-67725 (GCVE-0-2025-67725)

Vulnerability from cvelistv5 – Published: 2025-12-12 05:49 – Updated: 2025-12-18 18:51

Title

Tornado is Vulnerable to Quadratic DoS via Repeated Header Coalescing

Summary

Tornado is a Python web framework and asynchronous networking library. In versions 6.5.2 and below, a single maliciously crafted HTTP request can block the server's event loop for an extended period, caused by the HTTPHeaders.add method. The function accumulates values using string concatenation when the same header name is repeated, causing a Denial of Service (DoS). Due to Python string immutability, each concatenation copies the entire string, resulting in O(n²) time complexity. The severity can vary from high if max_header_size has been increased from its default, to low if it has its default value of 64KB. This issue is fixed in version 6.5.3.

Severity ?

7.5 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CWE

CWE-400 - Uncontrolled Resource Consumption

Assigner

GitHub_M

References

URL

Tags

	https://github.com/tornadoweb/tornado/security/ad…	x_refsource_CONFIRM
	https://github.com/tornadoweb/tornado/commit/7714…	x_refsource_MISC
	https://github.com/tornadoweb/tornado/releases/ta…	x_refsource_MISC

Impacted products

	Vendor	Product	Version
	tornadoweb	tornado	Affected: < 6.5.3

Show details on NVD website

JSON

To clipboard

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            "x_refsource_MISC"
          ],
          "url": "https://github.com/tornadoweb/tornado/releases/tag/v6.5.3"
        }
      ],
      "source": {
        "advisory": "GHSA-c98p-7wgm-6p64",
        "discovery": "UNKNOWN"
      },
      "title": "Tornado is Vulnerable to Quadratic DoS via Repeated Header Coalescing"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2025-67725",
    "datePublished": "2025-12-12T05:49:41.523Z",
    "dateReserved": "2025-12-10T19:25:20.819Z",
    "dateUpdated": "2025-12-18T18:51:00.369Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Tags

Taxonomy of the tags.

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Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

SUSE-SU-2026:1162-1

CVE-2026-31958 (GCVE-0-2026-31958)

CVE-2025-67724 (GCVE-0-2025-67724)

CVE-2025-67725 (GCVE-0-2025-67725)

Tags

Sightings

Nomenclature