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openSUSE 16 Security Update : capnproto (openSUSE-SU-2026:21062-1)

medium Nessus Plugin ID 324073

Synopsis

The remote openSUSE host is missing one or more security updates.

Description

The remote openSUSE 16 host has packages installed that are affected by multiple vulnerabilities as referenced in the openSUSE-SU-2026:21062-1 advisory.

 Update to version 1.4.0.

 Security issues fixed:

 - CVE-2026-32239: negative `Content-Length` conversion treated as impossibly large length by KJ-HTTP can lead to HTTP smuggling (bsc#1259638).
 - CVE-2026-32240: integer overflow when KJ-HTTP `Transfer-Encoding` chunk size is parsed to a value of 2^64 or larger can lead to HTTP smuggling (bsc#1259639).

 Other updates and bugfixes:

 - Have `stdcoro` use `::std` namespace.
 - Disable stack check when HWASan is used.
 - Fix benign buffer overrun in async `readMessage()`.
 - Shared library naming changes from `libsomething-%{version}.so` to `libsomething.so.%{version}`.

Tenable has extracted the preceding description block directly from the SUSE security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Update the affected capnproto, libcapnp-1_4_0 and / or libcapnp-devel packages.

See Also

https://bugzilla.suse.com/1259638

https://bugzilla.suse.com/1259639

https://www.suse.com/security/cve/CVE-2026-32239

https://www.suse.com/security/cve/CVE-2026-32240

Plugin Details

Severity: Medium

ID: 324073

File Name: openSUSE-2026-21062-1.nasl

Version: 1.1

Type: Local

Agent: unix

Published: 7/1/2026

Updated: 7/1/2026

Supported Sensors: Nessus Agent, Continuous Assessment, Nessus

Risk Information

VPR

Risk Factor: Low

Score: 2.1

Percentile: 7.51

CVSS v2

Risk Factor: Medium

Base Score: 6.4

Temporal Score: 4.7

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:N

CVSS Score Source: CVE-2026-32240

CVSS v3

Risk Factor: Medium

Base Score: 6.5

Temporal Score: 5.7

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

CVSS v4

Risk Factor: Medium

Base Score: 6.3

Threat Score: 1.7

Threat Vector: CVSS:4.0/E:U

Vector: CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N

Vulnerability Information

CPE: p-cpe:/a:novell:opensuse:libcapnp-devel, p-cpe:/a:novell:opensuse:libcapnp-1_4_0, cpe:/o:novell:opensuse:16.0, p-cpe:/a:novell:opensuse:capnproto

Required KB Items: Host/local_checks_enabled, Host/cpu, Host/SuSE/release, Host/SuSE/rpm-list

Exploit Ease: No known exploits are available

Patch Publication Date: 6/26/2026

Vulnerability Publication Date: 3/12/2026

Reference Information

CVE: CVE-2026-32239, CVE-2026-32240