CVE-2026-15712 (GCVE-0-2026-15712)

Vulnerability from cvelistv5 – Published: 2026-07-14 18:11 – Updated: 2026-11-06 17:54
VLAI
Title
Soupclientmessageiohttp2: libsoup3: libsoup: http/2 goaway frame parsing heap buffer over-read via invalid nul-termination assumption
Summary
A heap buffer over-read vulnerability was discovered in libsoup's (versions: libsoup 3.0 to 3.7.0) HTTP/2 connection tracking framework. When the library processes an HTTP/2 GOAWAY frame, it improperly handles the "Additional Debug Data" payload by assuming the data stream is a safely NUL-terminated C-string. Because the parser lacks strict length-boundary verification before reading this data, a remote, unauthenticated attacker can intentionally send a malformed GOAWAY frame missing the appropriate null delimiter. This causes the library to read past the end of the allocated buffer, triggering an application crash that results in a denial of service (DoS), or potentially exposing fragments of memory contents.
Severity
5.9 (Medium)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-14 19:15 UTC
CWE
Assigner
redhat CNA under the redhat root
CNA scorecard B 82/100 over 1131 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Red Hat Red Hat Enterprise Linux 10     cpe:/a:redhat:enterprise_linux:10
Create a notification for this product.
Date Public
2026-07-14 10:00
Credits
Red Hat would like to thank cavid for reporting this issue.
Show details on NVD website
To clipboard 

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