Red Hat Security Advisory: libsoup3 security update
Multiple security vulnerabilities have been identified in libsoup3, an HTTP library used in GNOME applications. These include a remote denial of service via unbounded decompression in the WebSocket permessage-deflate extension, a remote denial of service caused by oversized control frame protocol violations in WebSocket connections, and a heap use-after-free vulnerability in the HTTP/2 client triggered by a GOAWAY frame during body upload. Red Hat has released security updates addressing these issues in Red Hat Enterprise Linux 10 and related products.
AI Analysis
Technical Summary
Libsoup3, an HTTP library implemented in C and used in GNOME applications, contains three notable vulnerabilities: CVE-2026-15709 is an unbounded decompression remote denial of service in the WebSocket permessage-deflate extension; CVE-2026-15711 is a remote denial of service caused by oversized control frame protocol violations in WebSocket connections; CVE-2026-85197 is a heap use-after-free in the HTTP/2 client triggered by a GOAWAY frame during body upload. These vulnerabilities can cause denial of service or memory corruption. Red Hat has issued security advisories and updates for Red Hat Enterprise Linux 10 and related distributions to address these issues.
Potential Impact
Successful exploitation of these vulnerabilities can lead to remote denial of service conditions affecting applications using libsoup3, potentially causing application crashes or memory corruption. The heap use-after-free vulnerability may lead to undefined behavior or crashes in the HTTP/2 client. There is no indication of active exploitation in the wild at this time.
Mitigation Recommendations
Red Hat has released security updates for libsoup3 in Red Hat Enterprise Linux 10 and related products. Users should apply the available updates as described in the Red Hat advisory (https://access.redhat.com/articles/11258) to remediate these vulnerabilities. No additional mitigation steps are indicated by the vendor.
Red Hat Security Advisory: libsoup3 security update
Description
Multiple security vulnerabilities have been identified in libsoup3, an HTTP library used in GNOME applications. These include a remote denial of service via unbounded decompression in the WebSocket permessage-deflate extension, a remote denial of service caused by oversized control frame protocol violations in WebSocket connections, and a heap use-after-free vulnerability in the HTTP/2 client triggered by a GOAWAY frame during body upload. Red Hat has released security updates addressing these issues in Red Hat Enterprise Linux 10 and related products.
Affected software
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
Libsoup3, an HTTP library implemented in C and used in GNOME applications, contains three notable vulnerabilities: CVE-2026-15709 is an unbounded decompression remote denial of service in the WebSocket permessage-deflate extension; CVE-2026-15711 is a remote denial of service caused by oversized control frame protocol violations in WebSocket connections; CVE-2026-85197 is a heap use-after-free in the HTTP/2 client triggered by a GOAWAY frame during body upload. These vulnerabilities can cause denial of service or memory corruption. Red Hat has issued security advisories and updates for Red Hat Enterprise Linux 10 and related distributions to address these issues.
Potential Impact
Successful exploitation of these vulnerabilities can lead to remote denial of service conditions affecting applications using libsoup3, potentially causing application crashes or memory corruption. The heap use-after-free vulnerability may lead to undefined behavior or crashes in the HTTP/2 client. There is no indication of active exploitation in the wild at this time.
Mitigation Recommendations
Red Hat has released security updates for libsoup3 in Red Hat Enterprise Linux 10 and related products. Users should apply the available updates as described in the Red Hat advisory (https://access.redhat.com/articles/11258) to remediate these vulnerabilities. No additional mitigation steps are indicated by the vendor.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_security_advisory
- Csaf Version
- 2.0
- Publisher
- Red Hat Product Security
- Advisory Id
- RHSA-2026:68235
- Cve Count
- 3
- Additional Cves
- ["CVE-2026-15711","CVE-2026-85197"]
- State
- PUBLISHED
Threat ID: 6aab494755bf5e2cf599040e
Added to database: 09/17/2026, 01:58:31 UTC
Last enriched: 09/17/2026, 02:03:00 UTC
Last updated: 09/17/2026, 05:01:22 UTC
Views: 2
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