Bug 2435961 (CVE-2026-1761)

Summary: CVE-2026-1761 libsoup: Stack-Based Buffer Overflow in libsoup Multipart Response Parsingmultipart HTTP response
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: high Docs Contact:
Priority: high    
Version: unspecifiedKeywords: Security
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Hardware: All   
OS: Linux   
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Doc Text:
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.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Bug Depends On: 2435962, 2435964, 2435963    
Bug Blocks:    

Description OSIDB Bzimport 2026-02-02 13:02:48 UTC
Stack-based buffer overflow vulnerability in libsoup’s multipart/form-data response parsing logic. The flaw exists in the soup_filter_input_stream_read_until() function, where an incorrect length calculation may cause more data to be copied than the size of the caller-provided buffer. When a specially crafted multipart HTTP response is processed, libsoup can write past the end of a stack buffer, resulting in memory corruption. This issue can be triggered remotely without authentication or user interaction, potentially leading to application crashes or arbitrary code execution in applications that parse untrusted server responses.

Comment 2 errata-xmlrpc 2026-02-04 19:14:21 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions
  Red Hat Enterprise Linux 8.8 Telecommunications Update Service

Via RHSA-2026:1948 https://access.redhat.com/errata/RHSA-2026:1948

Comment 3 errata-xmlrpc 2026-02-05 03:30:14 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions

Via RHSA-2026:2005 https://access.redhat.com/errata/RHSA-2026:2005

Comment 4 errata-xmlrpc 2026-02-05 03:32:37 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10.0 Extended Update Support

Via RHSA-2026:2006 https://access.redhat.com/errata/RHSA-2026:2006

Comment 5 errata-xmlrpc 2026-02-05 03:43:41 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions

Via RHSA-2026:2008 https://access.redhat.com/errata/RHSA-2026:2008

Comment 6 errata-xmlrpc 2026-02-05 04:05:37 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.4 Extended Update Support

Via RHSA-2026:2007 https://access.redhat.com/errata/RHSA-2026:2007

Comment 7 errata-xmlrpc 2026-02-05 10:02:31 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.6 Extended Update Support

Via RHSA-2026:2049 https://access.redhat.com/errata/RHSA-2026:2049

Comment 8 errata-xmlrpc 2026-02-05 19:23:36 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:2182 https://access.redhat.com/errata/RHSA-2026:2182

Comment 9 errata-xmlrpc 2026-02-09 02:12:02 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2026:2214 https://access.redhat.com/errata/RHSA-2026:2214

Comment 10 errata-xmlrpc 2026-02-09 02:28:03 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2026:2215 https://access.redhat.com/errata/RHSA-2026:2215

Comment 11 errata-xmlrpc 2026-02-09 02:49:16 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:2216 https://access.redhat.com/errata/RHSA-2026:2216

Comment 12 errata-xmlrpc 2026-02-10 08:42:22 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.2 Advanced Update Support

Via RHSA-2026:2396 https://access.redhat.com/errata/RHSA-2026:2396

Comment 13 errata-xmlrpc 2026-02-10 09:07:14 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support
  Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On

Via RHSA-2026:2402 https://access.redhat.com/errata/RHSA-2026:2402

Comment 14 errata-xmlrpc 2026-02-10 11:16:23 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:2410 https://access.redhat.com/errata/RHSA-2026:2410

Comment 15 errata-xmlrpc 2026-02-11 07:41:08 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support
  Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions
  Red Hat Enterprise Linux 8.6 Telecommunications Update Service

Via RHSA-2026:2512 https://access.redhat.com/errata/RHSA-2026:2512

Comment 16 errata-xmlrpc 2026-02-11 07:49:28 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.2 Advanced Update Support

Via RHSA-2026:2513 https://access.redhat.com/errata/RHSA-2026:2513

Comment 17 errata-xmlrpc 2026-02-11 08:04:06 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support
  Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On

Via RHSA-2026:2514 https://access.redhat.com/errata/RHSA-2026:2514

Comment 18 errata-xmlrpc 2026-02-11 10:31:10 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support
  Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions
  Red Hat Enterprise Linux 8.6 Telecommunications Update Service

Via RHSA-2026:2529 https://access.redhat.com/errata/RHSA-2026:2529

Comment 19 errata-xmlrpc 2026-02-11 10:32:48 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions
  Red Hat Enterprise Linux 8.8 Telecommunications Update Service

Via RHSA-2026:2528 https://access.redhat.com/errata/RHSA-2026:2528

Comment 20 errata-xmlrpc 2026-02-12 09:09:17 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7 Extended Lifecycle Support

Via RHSA-2026:2628 https://access.redhat.com/errata/RHSA-2026:2628