CVE-2026-1761

Summary

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.

Affected Software

VendorProductVersion RangeStatus
Red HatRed Hat Enterprise Linux 100:3.6.5-3.el10_1.9 < *unaffected
Red HatRed Hat Enterprise Linux 100:3.6.5-3.el10_1.10 < *unaffected
Red HatRed Hat Enterprise Linux 10.0 Extended Update Support0:3.6.5-3.el10_0.14 < *unaffected
Red HatRed Hat Enterprise Linux 7 Extended Lifecycle Support0:2.62.2-11.el7_9 < *unaffected
Red HatRed Hat Enterprise Linux 80:8.10-7 < *unaffected
Red HatRed Hat Enterprise Linux 80:2.62.3-13.el8_10 < *unaffected
Red HatRed Hat Enterprise Linux 80:2.62.3-13.el8_10 < *unaffected
Red HatRed Hat Enterprise Linux 8.2 Advanced Update Support0:2.62.3-1.el8_2.8 < *unaffected
Red HatRed Hat Enterprise Linux 8.2 Advanced Update Support0:8.10-7.el8_2.1 < *unaffected
Red HatRed Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support0:2.62.3-2.el8_4.8 < *unaffected
Red HatRed Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support0:8.10-7.el8_4.1 < *unaffected
Red HatRed Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On0:2.62.3-2.el8_4.8 < *unaffected
Red HatRed Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On0:8.10-7.el8_4.1 < *unaffected
Red HatRed Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support0:2.62.3-2.el8_6.8 < *unaffected
Red HatRed Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support0:8.10-7.el8_6.1 < *unaffected
Red HatRed Hat Enterprise Linux 8.6 Telecommunications Update Service0:2.62.3-2.el8_6.8 < *unaffected
Red HatRed Hat Enterprise Linux 8.6 Telecommunications Update Service0:8.10-7.el8_6.1 < *unaffected
Red HatRed Hat Enterprise Linux 8.6 Update Services for SAP Solutions0:2.62.3-2.el8_6.8 < *unaffected
Red HatRed Hat Enterprise Linux 8.6 Update Services for SAP Solutions0:8.10-7.el8_6.1 < *unaffected
Red HatRed Hat Enterprise Linux 8.8 Telecommunications Update Service0:2.62.3-3.el8_8.8 < *unaffected
Red HatRed Hat Enterprise Linux 8.8 Telecommunications Update Service0:8.10-7.el8_8.1 < *unaffected
Red HatRed Hat Enterprise Linux 8.8 Update Services for SAP Solutions0:2.62.3-3.el8_8.8 < *unaffected
Red HatRed Hat Enterprise Linux 8.8 Update Services for SAP Solutions0:8.10-7.el8_8.1 < *unaffected
Red HatRed Hat Enterprise Linux 90:2.72.0-12.el9_7.5 < *unaffected
Red HatRed Hat Enterprise Linux 9.0 Update Services for SAP Solutions0:2.72.0-8.el9_0.9 < *unaffected
Red HatRed Hat Enterprise Linux 9.2 Update Services for SAP Solutions0:2.72.0-8.el9_2.10 < *unaffected
Red HatRed Hat Enterprise Linux 9.4 Extended Update Support0:2.72.0-8.el9_4.9 < *unaffected
Red HatRed Hat Enterprise Linux 9.6 Extended Update Support0:2.72.0-10.el9_6.6 < *unaffected
Red HatRed Hat OpenShift Dev Spaces (RHOSDS) 3.26sha256:619c10386e0224e5228876a434c5b8d78d251bc383e2a9491503d6ceddd33c96 < *unaffected
Red HatRed Hat OpenShift Dev Spaces (RHOSDS) 3.26sha256:25de67b5c2c60597173d977b2a09ecd14a9b2d60c4fd24ac0c8bf3c1ac6c000e < *unaffected
Red HatRed Hat OpenShift Dev Spaces (RHOSDS) 3.26sha256:f3428de9e2ede29629694ab02ff8ca25543f3bc8a7300d1de95c00724e31c4b5 < *unaffected

Weaknesses

  • CWE-121: Stack-based Buffer Overflow

Workarounds

To mitigate this issue, applications utilizing libsoup that process HTTP responses should be configured to only communicate with trusted endpoints. Implement network egress filtering to restrict vulnerable applications from connecting to untrusted external services, thereby reducing the exposure to specially crafted multipart HTTP responses.

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: yes
    • Technical Impact: partial

libsoup: Stack-Based Buffer Overflow in libsoup Multipart Response Parsingmultipart HTTP response

Additional References

References