Red Hat Security Advisory: libsoup3 security update
Libsoup is an HTTP library implementation in C. It was originally part of a SOAP (Simple Object Access Protocol) implementation called Soup, but the SOAP and non-SOAP parts have now been split into separate packages. libsoup uses the Glib main loop and is designed to work well with GTK applications. This enables GNOME applications to access HTTP servers on the network in a completely asynchronous fashion, very similar to the Gtk+ programming model (a synchronous operation mode is also supported for those who want it), but the SOAP parts were removed long ago. Security Fix(es): * libsoup: Signed to Unsigned Conversion Error Leading to Stack-Based Buffer Overflow in libsoup NTLM Authentication (CVE-2026-0719) * libsoup: Stack-Based Buffer Overflow in libsoup Multipart Response Parsingmultipart HTTP response (CVE-2026-1761) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
AI Analysis
Technical Summary
Libsoup3, a C-based HTTP library used in GNOME applications, contains two stack-based buffer overflow vulnerabilities. CVE-2026-0719 arises from a signed to unsigned conversion error in NTLM authentication, while CVE-2026-1761 involves a buffer overflow during multipart HTTP response parsing. These flaws could potentially lead to memory corruption. Red Hat has issued security updates for Red Hat Enterprise Linux 10.0 Extended Update Support and associated CodeReady Linux Builder variants to remediate these vulnerabilities.
Potential Impact
The vulnerabilities allow for stack-based buffer overflows, which can lead to memory corruption. This could potentially be exploited to cause application crashes or execute arbitrary code within the context of the affected application. The advisory rates the security impact as Important (high severity). There are no known exploits in the wild at the time of this advisory.
Mitigation Recommendations
Red Hat has released security updates for libsoup3 in Red Hat Enterprise Linux 10.0 Extended Update Support and related CodeReady Linux Builder packages. Users should apply these official updates as detailed in Red Hat advisory RHSA-2026:2006 and the referenced article https://access.redhat.com/articles/11258. No alternative mitigations are indicated by the vendor advisory.
Red Hat Security Advisory: libsoup3 security update
Description
Libsoup is an HTTP library implementation in C. It was originally part of a SOAP (Simple Object Access Protocol) implementation called Soup, but the SOAP and non-SOAP parts have now been split into separate packages. libsoup uses the Glib main loop and is designed to work well with GTK applications. This enables GNOME applications to access HTTP servers on the network in a completely asynchronous fashion, very similar to the Gtk+ programming model (a synchronous operation mode is also supported for those who want it), but the SOAP parts were removed long ago. Security Fix(es): * libsoup: Signed to Unsigned Conversion Error Leading to Stack-Based Buffer Overflow in libsoup NTLM Authentication (CVE-2026-0719) * libsoup: Stack-Based Buffer Overflow in libsoup Multipart Response Parsingmultipart HTTP response (CVE-2026-1761) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
Affected software
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Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
Libsoup3, a C-based HTTP library used in GNOME applications, contains two stack-based buffer overflow vulnerabilities. CVE-2026-0719 arises from a signed to unsigned conversion error in NTLM authentication, while CVE-2026-1761 involves a buffer overflow during multipart HTTP response parsing. These flaws could potentially lead to memory corruption. Red Hat has issued security updates for Red Hat Enterprise Linux 10.0 Extended Update Support and associated CodeReady Linux Builder variants to remediate these vulnerabilities.
Potential Impact
The vulnerabilities allow for stack-based buffer overflows, which can lead to memory corruption. This could potentially be exploited to cause application crashes or execute arbitrary code within the context of the affected application. The advisory rates the security impact as Important (high severity). There are no known exploits in the wild at the time of this advisory.
Mitigation Recommendations
Red Hat has released security updates for libsoup3 in Red Hat Enterprise Linux 10.0 Extended Update Support and related CodeReady Linux Builder packages. Users should apply these official updates as detailed in Red Hat advisory RHSA-2026:2006 and the referenced article https://access.redhat.com/articles/11258. 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-2026:2006
- Cve Count
- 2
- Additional Cves
- ["CVE-2026-1761"]
- State
- PUBLISHED
Threat ID: 6a27e99f8dd33fbd8516cc11
Added to database: 06/09/2026, 10:23:27 UTC
Last enriched: 06/25/2026, 23:41:30 UTC
Last updated: 09/10/2026, 22:28:00 UTC
Views: 76
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