Red Hat Security Advisory: libsoup security update
A moderate severity vulnerability (CVE-2026-15711) exists in the libsoup library used by GNOME, where an oversized control frame in the WebSocket implementation can cause a remote denial of service. Red Hat has issued a security advisory and released updates for Red Hat Enterprise Linux 8 to address this issue.
AI Analysis
Technical Summary
The libsoup packages provide HTTP client and server functionality for GNOME. A security flaw was identified in the SoupWebsocketConnection component where sending an oversized control frame violates the WebSocket protocol and can trigger a remote denial of service (DoS) condition. This vulnerability is tracked as CVE-2026-15711. Red Hat has rated the issue as moderate severity and released updated packages for multiple architectures of Red Hat Enterprise Linux 8 to fix the flaw.
Potential Impact
An attacker can remotely cause a denial of service by sending an oversized control frame to the vulnerable libsoup WebSocket implementation, potentially disrupting applications relying on libsoup for HTTP and WebSocket communications.
Mitigation Recommendations
Red Hat has released updated libsoup packages for Red Hat Enterprise Linux 8 that fix this vulnerability. Users should apply the security update as described in the Red Hat advisory (RHSA-2026:68266) to remediate the issue. No alternative mitigations are indicated by the vendor advisory.
Red Hat Security Advisory: libsoup security update
Description
A moderate severity vulnerability (CVE-2026-15711) exists in the libsoup library used by GNOME, where an oversized control frame in the WebSocket implementation can cause a remote denial of service. Red Hat has issued a security advisory and released updates for Red Hat Enterprise Linux 8 to address this issue.
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The libsoup packages provide HTTP client and server functionality for GNOME. A security flaw was identified in the SoupWebsocketConnection component where sending an oversized control frame violates the WebSocket protocol and can trigger a remote denial of service (DoS) condition. This vulnerability is tracked as CVE-2026-15711. Red Hat has rated the issue as moderate severity and released updated packages for multiple architectures of Red Hat Enterprise Linux 8 to fix the flaw.
Potential Impact
An attacker can remotely cause a denial of service by sending an oversized control frame to the vulnerable libsoup WebSocket implementation, potentially disrupting applications relying on libsoup for HTTP and WebSocket communications.
Mitigation Recommendations
Red Hat has released updated libsoup packages for Red Hat Enterprise Linux 8 that fix this vulnerability. Users should apply the security update as described in the Red Hat advisory (RHSA-2026:68266) to remediate the issue. No alternative mitigations are indicated by the vendor advisory.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_security_advisory
- Csaf Version
- 2.0
- Publisher
- Red Hat Product Security
- Advisory Id
- RHSA-2026:68266
- Cve Count
- 1
- State
- PUBLISHED
Threat ID: 6aab494755bf5e2cf5990410
Added to database: 09/17/2026, 01:58:31 UTC
Last enriched: 09/17/2026, 02:03:07 UTC
Last updated: 09/17/2026, 02:03:07 UTC
Views: 1
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