Red Hat Security Advisory: libsoup security update
Two security vulnerabilities have been identified in the libsoup HTTP client and server library for GNOME, affecting Red Hat Enterprise Linux 9. These include a remote denial of service caused by unbounded decompression in the WebSocket permessage-deflate extension (CVE-2026-15709) and a remote denial of service via an oversized control frame protocol violation in WebSocket connections (CVE-2026-15711). Red Hat has released security updates addressing these issues with a moderate severity rating.
AI Analysis
Technical Summary
The libsoup library, used for HTTP client and server functionality in GNOME, contains two vulnerabilities: CVE-2026-15709 involves an unbounded decompression issue in the WebSocket permessage-deflate extension that can be exploited to cause a remote denial of service. CVE-2026-15711 involves a denial of service triggered by sending an oversized control frame violating the WebSocket protocol. Both vulnerabilities allow remote attackers to disrupt service availability. Red Hat has issued security updates for Red Hat Enterprise Linux 9 to fix these issues.
Potential Impact
Successful exploitation of these vulnerabilities can cause remote denial of service conditions, potentially disrupting applications or services relying on libsoup for WebSocket communication. There is no indication of code execution or data breach from these vulnerabilities. The impact is limited to service availability degradation.
Mitigation Recommendations
Red Hat has released security updates for Red Hat Enterprise Linux 9 that address these vulnerabilities. Users should apply the provided updates as detailed in the Red Hat advisory RHSA-2026:68234. For update instructions, refer to https://access.redhat.com/articles/11258. No additional mitigations are specified or required beyond applying the official patches.
Red Hat Security Advisory: libsoup security update
Description
Two security vulnerabilities have been identified in the libsoup HTTP client and server library for GNOME, affecting Red Hat Enterprise Linux 9. These include a remote denial of service caused by unbounded decompression in the WebSocket permessage-deflate extension (CVE-2026-15709) and a remote denial of service via an oversized control frame protocol violation in WebSocket connections (CVE-2026-15711). Red Hat has released security updates addressing these issues with a moderate severity rating.
Affected software
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The libsoup library, used for HTTP client and server functionality in GNOME, contains two vulnerabilities: CVE-2026-15709 involves an unbounded decompression issue in the WebSocket permessage-deflate extension that can be exploited to cause a remote denial of service. CVE-2026-15711 involves a denial of service triggered by sending an oversized control frame violating the WebSocket protocol. Both vulnerabilities allow remote attackers to disrupt service availability. Red Hat has issued security updates for Red Hat Enterprise Linux 9 to fix these issues.
Potential Impact
Successful exploitation of these vulnerabilities can cause remote denial of service conditions, potentially disrupting applications or services relying on libsoup for WebSocket communication. There is no indication of code execution or data breach from these vulnerabilities. The impact is limited to service availability degradation.
Mitigation Recommendations
Red Hat has released security updates for Red Hat Enterprise Linux 9 that address these vulnerabilities. Users should apply the provided updates as detailed in the Red Hat advisory RHSA-2026:68234. For update instructions, refer to https://access.redhat.com/articles/11258. No additional mitigations are specified or required beyond applying the official patches.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_security_advisory
- Csaf Version
- 2.0
- Publisher
- Red Hat Product Security
- Advisory Id
- RHSA-2026:68234
- Cve Count
- 2
- Additional Cves
- ["CVE-2026-15711"]
- State
- PUBLISHED
Threat ID: 6aab494755bf5e2cf599040f
Added to database: 09/17/2026, 01:58:31 UTC
Last enriched: 09/17/2026, 02:03:04 UTC
Last updated: 09/17/2026, 02:03:04 UTC
Views: 1
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