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Libsoup: soupwebsocketconnection: libsoup: websocket remote denial of service via oversized control frame protocol violation (Red Hat Red Hat Enterprise Linux 10)

CVE-2026-15711
HIGH 7.5

At a glance

Source
NVD
EPSS
EPSS 0.74 % · percentile 55 ()
State
PUBLISHED
Published
Updated
Assigner
redhat
NVD status
Deferred

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Description

A vulnerability was found in libsoup's WebSocket frame parsing implementation. The library fails to validate length rules specified in RFC 6455 §5.5, which mandates that all WebSocket control frames (e.g., PING, PONG, CLOSE) contain a payload of 125 bytes or less. A remote, unauthenticated attacker can exploit this by sending a non-compliant, oversized control frame. Because the parser handles this protocol violation improperly instead of throwing an immediate connection termination error, it triggers a internal processing crash, resulting in a remote denial of service (DoS) for applications utilizing libsoup WebSockets.

Weaknesses (CWE)

  • CWE-770 — Allocation of Resources Without Limits or Throttling

References

Scores

VersionScoreVectorScored by
CVSS 3.1HIGH 7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hredhat
CVSS 3.1HIGH 7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HNVD · secalert@redhat.com (Secondary)

European references

Affected products

ProductVersions
Red Hat · Red Hat Enterprise Linux 10unaffected 0:3.6.5-3.el10_2.14 < *
Red Hat · Red Hat Enterprise Linux 10.0 Extended Update Supportunaffected 0:3.6.5-3.el10_0.17 < *
Red Hat · Red Hat Enterprise Linux 8unaffected 0:2.62.3-15.el8_10 < *
Red Hat · Red Hat Enterprise Linux 8unaffected 0:2.62.3-15.el8_10 < *
Red Hat · Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Supportunaffected 0:2.62.3-2.el8_4.10 < *
Red Hat · Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-Onunaffected 0:2.62.3-2.el8_4.10 < *
Red Hat · Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Supportunaffected 0:2.62.3-2.el8_6.10 < *
Red Hat · Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-Onunaffected 0:2.62.3-2.el8_6.10 < *
Red Hat · Red Hat Enterprise Linux 8.8 Telecommunications Update Serviceunaffected 0:2.62.3-3.el8_8.11 < *
Red Hat · Red Hat Enterprise Linux 8.8 Update Services for SAP Solutionsunaffected 0:2.62.3-3.el8_8.11 < *
Red Hat · Red Hat Enterprise Linux 9unaffected 0:2.72.0-16.el9_8.3 < *
Red Hat · Red Hat Enterprise Linux 9.2 Update Services for SAP Solutionsunaffected 0:2.72.0-8.el9_2.13 < *
Red Hat · Red Hat Enterprise Linux 9.4 Update Services for SAP Solutionsunaffected 0:2.72.0-8.el9_4.12 < *
Red Hat · Red Hat Enterprise Linux 9.6 Extended Update Supportunaffected 0:2.72.0-10.el9_6.9 < *
Red Hat · Red Hat Enterprise Linux 6
Red Hat · Red Hat Enterprise Linux 7

Sources

SourceLicence
CVE List (CVEProject cvelistV5)CVE Program Terms of Use
EPSS (FIRST.org)FIRST — attribution requested
ENISA EUVDENISA — reproduction authorised, source acknowledged
NVD (NIST) via fkie-cad/nvd-json-data-feedsPublic domain — this product uses data from the NVD API but is not endorsed or certified by the NVD