Vulnerabilities
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CVE Vulnerabilities

CVE-2026-1761

Stack-based Buffer Overflow

Published: Feb 02, 2026 | Modified: Feb 17, 2026
CVSS 3.x
N/A
Source:
NVD
CVSS 2.x
RedHat/V2
RedHat/V3
8.6 IMPORTANT
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:L
Ubuntu
MEDIUM
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Additional information
NVDhttps://nvd.nist.gov/vuln/detail/CVE-2026-1761
CWEhttps://cwe.mitre.org/data/definitions/121.html

A flaw was found in libsoup. This stack-based buffer overflow vulnerability occurs during the parsing of multipart HTTP responses due to an incorrect length calculation. A remote attacker can exploit this by sending a specially crafted multipart HTTP response, which can lead to memory corruption. This issue may result in application crashes or arbitrary code execution in applications that process untrusted server responses, and it does not require authentication or user interaction.

Weakness

A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function).

Affected Software

NameVendorStart VersionEnd Version
Red Hat Enterprise Linux 10RedHatlibsoup3-0:3.6.5-3.el10_1.9*
Red Hat Enterprise Linux 10RedHatlibsoup3-0:3.6.5-3.el10_1.10*
Red Hat Enterprise Linux 10.0 Extended Update SupportRedHatlibsoup3-0:3.6.5-3.el10_0.14*
Red Hat Enterprise Linux 7 Extended Lifecycle SupportRedHatlibsoup-0:2.62.2-11.el7_9*
Red Hat Enterprise Linux 8RedHatspice-client-win-0:8.10-7*
Red Hat Enterprise Linux 8RedHatlibsoup-0:2.62.3-13.el8_10*
Red Hat Enterprise Linux 8RedHatlibsoup-0:2.62.3-13.el8_10*
Red Hat Enterprise Linux 8.2 Advanced Update SupportRedHatlibsoup-0:2.62.3-1.el8_2.8*
Red Hat Enterprise Linux 8.2 Advanced Update SupportRedHatspice-client-win-0:8.10-7.el8_2.1*
Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update SupportRedHatlibsoup-0:2.62.3-2.el8_4.8*
Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update SupportRedHatspice-client-win-0:8.10-7.el8_4.1*
Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-OnRedHatlibsoup-0:2.62.3-2.el8_4.8*
Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-OnRedHatspice-client-win-0:8.10-7.el8_4.1*
Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update SupportRedHatlibsoup-0:2.62.3-2.el8_6.8*
Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update SupportRedHatspice-client-win-0:8.10-7.el8_6.1*
Red Hat Enterprise Linux 8.6 Telecommunications Update ServiceRedHatlibsoup-0:2.62.3-2.el8_6.8*
Red Hat Enterprise Linux 8.6 Telecommunications Update ServiceRedHatspice-client-win-0:8.10-7.el8_6.1*
Red Hat Enterprise Linux 8.6 Update Services for SAP SolutionsRedHatlibsoup-0:2.62.3-2.el8_6.8*
Red Hat Enterprise Linux 8.6 Update Services for SAP SolutionsRedHatspice-client-win-0:8.10-7.el8_6.1*
Red Hat Enterprise Linux 8.8 Telecommunications Update ServiceRedHatlibsoup-0:2.62.3-3.el8_8.8*
Red Hat Enterprise Linux 8.8 Telecommunications Update ServiceRedHatspice-client-win-0:8.10-7.el8_8.1*
Red Hat Enterprise Linux 8.8 Update Services for SAP SolutionsRedHatlibsoup-0:2.62.3-3.el8_8.8*
Red Hat Enterprise Linux 8.8 Update Services for SAP SolutionsRedHatspice-client-win-0:8.10-7.el8_8.1*
Red Hat Enterprise Linux 9RedHatlibsoup-0:2.72.0-12.el9_7.5*
Red Hat Enterprise Linux 9.0 Update Services for SAP SolutionsRedHatlibsoup-0:2.72.0-8.el9_0.9*
Red Hat Enterprise Linux 9.2 Update Services for SAP SolutionsRedHatlibsoup-0:2.72.0-8.el9_2.10*
Red Hat Enterprise Linux 9.4 Extended Update SupportRedHatlibsoup-0:2.72.0-8.el9_4.9*
Red Hat Enterprise Linux 9.6 Extended Update SupportRedHatlibsoup-0:2.72.0-10.el9_6.6*
Red Hat OpenShift Dev Spaces (RHOSDS) 3.26RedHatdevspaces/openvsx-rhel9:sha256:b69f3ac7efeae55c89036c589536b264f1a1e2431d120ea625c1045fc9d7de79*
Red Hat OpenShift Dev Spaces (RHOSDS) 3.26RedHatdevspaces/pluginregistry-rhel9:sha256:d8203704e7ee44c7937b1c81166c63c002a8a09de0e38b04a3cc1e60ad94adcf*
Red Hat OpenShift Dev Spaces (RHOSDS) 3.26RedHatdevspaces/udi-rhel9:sha256:1a9e80f609eaf33cc252400a5e4371096dc549cbf9364e95dc6f38144fdb8bdf*

Potential Mitigations

  • Use automatic buffer overflow detection mechanisms that are offered by certain compilers or compiler extensions. Examples include: the Microsoft Visual Studio /GS flag, Fedora/Red Hat FORTIFY_SOURCE GCC flag, StackGuard, and ProPolice, which provide various mechanisms including canary-based detection and range/index checking.
  • D3-SFCV (Stack Frame Canary Validation) from D3FEND [REF-1334] discusses canary-based detection in detail.
  • Run or compile the software using features or extensions that randomly arrange the positions of a program’s executable and libraries in memory. Because this makes the addresses unpredictable, it can prevent an attacker from reliably jumping to exploitable code.
  • Examples include Address Space Layout Randomization (ASLR) [REF-58] [REF-60] and Position-Independent Executables (PIE) [REF-64]. Imported modules may be similarly realigned if their default memory addresses conflict with other modules, in a process known as “rebasing” (for Windows) and “prelinking” (for Linux) [REF-1332] using randomly generated addresses. ASLR for libraries cannot be used in conjunction with prelink since it would require relocating the libraries at run-time, defeating the whole purpose of prelinking.
  • For more information on these techniques see D3-SAOR (Segment Address Offset Randomization) from D3FEND [REF-1335].

References

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