FKIE_CVE-2026-23538

Vulnerability from fkie_nvd - Published: 2026-07-16 01:16 - Updated: 2026-07-16 14:16
Severity
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Summary
A vulnerability was identified in the Feast Feature Server's `/ws/chat` endpoint that allows remote attackers to establish persistent WebSocket connections without any authentication. By opening a large number of simultaneous connections, an attacker can exhaust server resources—such as memory, CPU, and file descriptors—leading to a complete denial of service for legitimate users.
References
secalert@redhat.comhttps://access.redhat.com/security/cve/CVE-2026-23538
secalert@redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=2429311
secalert@redhat.comhttps://github.com/red-hat-data-services/feast/pull/192
0b0ca135-0b70-47e7-9f44-1890c2a1c46chttps://access.redhat.com/security/cve/CVE-2026-23538
0b0ca135-0b70-47e7-9f44-1890c2a1c46chttps://bugzilla.redhat.com/show_bug.cgi?id=2429311
0b0ca135-0b70-47e7-9f44-1890c2a1c46chttps://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-23538.json
Impacted products
Vendor Product Version
To clipboard 

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  "cveTags": [],
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  "id": "CVE-2026-23538",
  "lastModified": "2026-07-16T14:16:49.493",
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          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 7.5,
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          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
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          "integrityImpact": "NONE",
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          "userInteraction": "NONE",
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            {
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          "role": "CISA Coordinator",
          "timestamp": "2026-07-16T13:51:47.243241Z",
          "version": "2.0.3"
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  "published": "2026-07-16T01:16:30.530",
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          "value": "CWE-770"
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}



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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.


Detection rules are retrieved from Rulezet.