OPENSUSE-SU-2026:21924-1

Vulnerability from csaf_opensuse - Published: 2026-09-21 14:05 - Updated: 2026-09-24 17:48
Summary
Security update for cloudflared
Severity
Important
Notes
Title of the patch: Security update for cloudflared
Description of the patch: This update for cloudflared fixes the following issues: Changes in cloudflared: - Update version to 2026.9.1 * Update vendor (boo#1278643, CVE-2026-56854, CVE-2026-78662, CVE-2026-56855) * Propagate edge registration errors over QUIC and fix supervisor error classification * Negotiate protected mode during Quick Tunnel provisioning
Patchnames: openSUSE-Leap-16.0-packagehub-614
Terms of use: CSAF 2.0 data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0).
Affected products
Product Identifier Version Remediation
Unresolved product id: openSUSE Leap 16.0:cloudflared-0:2026.9.1-bp160.1.1.aarch64 —
Vendor Fix
Unresolved product id: openSUSE Leap 16.0:cloudflared-0:2026.9.1-bp160.1.1.ppc64le —
Vendor Fix
Unresolved product id: openSUSE Leap 16.0:cloudflared-0:2026.9.1-bp160.1.1.s390x —
Vendor Fix
Unresolved product id: openSUSE Leap 16.0:cloudflared-0:2026.9.1-bp160.1.1.x86_64 —
Vendor Fix
Threats
Impact important
Affected products
Recommended 4 products, the same list as for CVE-2026-39827
Threats
Impact important
Affected products
Recommended 4 products, the same list as for CVE-2026-39827
Threats
Impact important
Affected products
Recommended 4 products, the same list as for CVE-2026-39827
Threats
Impact important
Affected products
Recommended 4 products, the same list as for CVE-2026-39827
Threats
Impact important
Affected products
Recommended 4 products, the same list as for CVE-2026-39827
Threats
Impact important
Affected products
Recommended 4 products, the same list as for CVE-2026-39827
Threats
Impact important
Affected products
Recommended 4 products, the same list as for CVE-2026-39827
Threats
Impact important
Affected products
Recommended 4 products, the same list as for CVE-2026-39827
Threats
Impact important
Affected products
Recommended 4 products, the same list as for CVE-2026-39827
Threats
Impact moderate
Affected products
Recommended 4 products, the same list as for CVE-2026-39827
Threats
Impact important
Affected products
Recommended 4 products, the same list as for CVE-2026-39827
Threats
Impact important
Affected products
Recommended 4 products, the same list as for CVE-2026-39827
Threats
Impact important
Affected products
Recommended 4 products, the same list as for CVE-2026-39827
Threats
Impact important
Affected products
Recommended 4 products, the same list as for CVE-2026-39827
Threats
Impact important
Affected products
Recommended 4 products, the same list as for CVE-2026-39827
Threats
Impact important
Affected products
Recommended 4 products, the same list as for CVE-2026-39827
Threats
Impact important
References
URL Category
https://www.suse.com/support/security/rating/ external
https://ftp.suse.com/pub/projects/security/csaf/o… self
https://bugzilla.suse.com/1266208 self
https://bugzilla.suse.com/1276703 self
https://bugzilla.suse.com/1278643 self
https://www.suse.com/security/cve/CVE-2026-39827/ self
https://www.suse.com/security/cve/CVE-2026-39828/ self
https://www.suse.com/security/cve/CVE-2026-39829/ self
https://www.suse.com/security/cve/CVE-2026-39830/ self
https://www.suse.com/security/cve/CVE-2026-39831/ self
https://www.suse.com/security/cve/CVE-2026-39832/ self
https://www.suse.com/security/cve/CVE-2026-39833/ self
https://www.suse.com/security/cve/CVE-2026-39834/ self
https://www.suse.com/security/cve/CVE-2026-39835/ self
https://www.suse.com/security/cve/CVE-2026-41178/ self
https://www.suse.com/security/cve/CVE-2026-42508/ self
https://www.suse.com/security/cve/CVE-2026-46595/ self
https://www.suse.com/security/cve/CVE-2026-46597/ self
https://www.suse.com/security/cve/CVE-2026-46598/ self
https://www.suse.com/security/cve/CVE-2026-56854/ self
https://www.suse.com/security/cve/CVE-2026-56855/ self
https://www.suse.com/security/cve/CVE-2026-78662/ self
https://www.suse.com/security/cve/CVE-2026-39827 external
https://bugzilla.suse.com/1266049 external
https://www.suse.com/security/cve/CVE-2026-39828 external
https://bugzilla.suse.com/1266049 external
https://www.suse.com/security/cve/CVE-2026-39829 external
https://bugzilla.suse.com/1266049 external
https://www.suse.com/security/cve/CVE-2026-39830 external
https://bugzilla.suse.com/1266049 external
https://www.suse.com/security/cve/CVE-2026-39831 external
https://bugzilla.suse.com/1266049 external
https://www.suse.com/security/cve/CVE-2026-39832 external
https://bugzilla.suse.com/1266049 external
https://www.suse.com/security/cve/CVE-2026-39833 external
https://bugzilla.suse.com/1266049 external
https://bugzilla.suse.com/1272292 external
https://www.suse.com/security/cve/CVE-2026-39834 external
https://bugzilla.suse.com/1266049 external
https://www.suse.com/security/cve/CVE-2026-39835 external
https://bugzilla.suse.com/1266049 external
https://www.suse.com/security/cve/CVE-2026-41178 external
https://bugzilla.suse.com/1276509 external
https://www.suse.com/security/cve/CVE-2026-42508 external
https://bugzilla.suse.com/1266049 external
https://www.suse.com/security/cve/CVE-2026-46595 external
https://bugzilla.suse.com/1266049 external
https://bugzilla.suse.com/1278446 external
https://www.suse.com/security/cve/CVE-2026-46597 external
https://bugzilla.suse.com/1266049 external
https://www.suse.com/security/cve/CVE-2026-46598 external
https://bugzilla.suse.com/1266049 external
https://www.suse.com/security/cve/CVE-2026-56854 external
https://bugzilla.suse.com/1278446 external
https://bugzilla.suse.com/1280553 external
https://www.suse.com/security/cve/CVE-2026-56855 external
https://bugzilla.suse.com/1278446 external
https://bugzilla.suse.com/1280553 external
https://www.suse.com/security/cve/CVE-2026-78662 external
https://bugzilla.suse.com/1278446 external
https://bugzilla.suse.com/1280553 external

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          "text": "An authenticated SSH client that repeatedly opened channels which were rejected by the server caused unbounded memory growth, eventually crashing the server process and affecting all connected users. Rejected channels are now properly removed from the connection\u0027s internal state and released for garbage collection.",
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          "text": "Previously, a channel registered in the mux\u0027s chanList is not usable until it is established. A malicious peer was able flood the channel\u0027s incomingRequests, deadlocking the entire connection. Now, we add an atomic established state, set when a channel becomes usable. Until such a time, handlePacket drops every packet other than the open confirmation/failure, without blocking and without tearing down the connection.",
          "title": "CVE description"
        }
      ],
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      "references": [
        {
          "category": "external",
          "summary": "CVE-2026-78662",
          "url": "https://www.suse.com/security/cve/CVE-2026-78662"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1278446 for CVE-2026-78662",
          "url": "https://bugzilla.suse.com/1278446"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1280553 for CVE-2026-78662",
          "url": "https://bugzilla.suse.com/1280553"
        }
      ],
      "remediations": [
        {
          "category": "vendor_fix",
          "details": "To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or \"zypper patch\".\n",
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      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
            "version": "3.1"
          },
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      ],
      "threats": [
        {
          "category": "impact",
          "date": "2026-09-21T14:05:15Z",
          "details": "important"
        }
      ],
      "title": "CVE-2026-78662"
    }
  ]
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

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.

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Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.


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