Libsoup3: A flaw was found in libsoup. A malicious HTTP/2 server or a Man-in-the-Middle (MITM) attacker can exploit a heap use-after-free vulnerability in the… (CVE-2026-85197)
Description
This security update for libsoup addresses two high-severity vulnerabilities: a heap use-after-free in the HTTP/2 client triggered by a GOAWAY frame (CVE-2026-85197), and a heap buffer overflow in SoupSession caused by a crafted SETTINGS frame with an INITIAL_WINDOW_SIZE parameter (CVE-2026-85534). Both vulnerabilities can lead to memory corruption issues.
CVSS v3.1
Score 7.6high
Affected software
pkg:deb/ubuntu/libsoup3?arch=source&distro=esm-apps/jammypkg:deb/ubuntu/libsoup3?arch=source&distro=noblepkg:deb/ubuntu/libsoup3?arch=source&distro=stonkingpkg:deb/ubuntu/libsoup3?arch=source&distro=resoluteRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
Two high-severity vulnerabilities affect libsoup. CVE-2026-85197 is a heap use-after-free in the HTTP/2 client during body upload triggered by a GOAWAY frame. CVE-2026-85534 is a heap buffer overflow in SoupSession caused by a crafted SETTINGS frame with an INITIAL_WINDOW_SIZE parameter. Both issues can result in memory corruption, potentially impacting application stability or security.
Potential Impact
Successful exploitation of these vulnerabilities could lead to memory corruption, which may cause application crashes or potentially enable further exploitation depending on the context. No known exploits in the wild have been reported.
Mitigation Recommendations
A security update has been issued by the SUSE Product Security Team addressing these vulnerabilities. Users should apply the update to the affected libsoup versions listed to remediate these issues. Patch status is not explicitly confirmed in the input data; verify with the vendor advisory for the latest remediation guidance.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-pq26-x6qp-8qr7
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-85197"]
- Database Specific Severity
- HIGH
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6a9ad4ddacd9273b49b66abf
Added to database: 09/04/2026, 14:25:33 UTC
Last enriched: 10/12/2026, 22:35:15 UTC
Last updated: 10/19/2026, 18:48:24 UTC
Views: 60
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