SUSE SLES15 Security Update : rmt-server (SUSE-SU-2026:1745-1)

high Nessus Plugin ID 313640

Synopsis

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

Description

The remote SUSE Linux SLES15 / SLES_SAP15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:1745-1 advisory.

Update to version 2.27.

Security issues fixed:

- CVE-2026-26961: rack: greedy multipart boundary parsing can lead to parser differentials and WAF bypass (bsc#1261398).
- CVE-2026-26962: rack: improper unfolding of folded multipart headers can lead to downstream header injection and response splitting(bsc#1261471).
- CVE-2026-34763: rack: unescaped regex interpolation of configured root path can lead to root directory disclosure (bsc#1261406).
- CVE-2026-34785: rack: prefix matching logic can lead to the exposure of unintended files under the static root (bsc#1261417).
- CVE-2026-34786: rack: URL-encoded path mismatch can lead to `header_rules` bypass (bsc#1261426).
- CVE-2026-34826: rack: missing individual byte range limit checks when parsing HTTP `Range` headers can lead to excessive resource consumption and a denial of service (bsc#1261436).
- CVE-2026-34829: rack: multipart parsing without `Content-Length` header can lead to unbounded chunked file uploads and a denial of service (bsc#1261447).
- CVE-2026-34230: rack: quadratic complexity when processing of wildcard `Accept-Encoding` headers can lead to a denial of service (bsc#1261388).
- CVE-2026-34830: rack: improper sanitization of the `X-Accel-Mapping` request header can lead to the exposure of unintended files via `X-Accel-Redirect` (bsc#1261458).
- CVE-2026-34831: rack: `Content-Length` header and body byte size mismatch when creating error responses can lead to incorrect HTTP response framing (bsc#1261466).

Other updates and bugfixes:

- Fix ReDoS in `Addressable`.
- Fix out-of-bounds read in `rdiscount`.

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 rmt-server, rmt-server-config and / or rmt-server-pubcloud packages.

Plugin Details

Severity: High

ID: 313640

File Name: suse_SU-2026-1745-1.nasl

Version: 1.1

Type: Local

Agent: unix

Family: SuSE Local Security Checks

Published: 5/10/2026

Updated: 5/10/2026

Supported Sensors: Nessus Agent, Continuous Assessment, Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 5.8

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

CVSS Score Source: CVE-2026-34830

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

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

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

Vulnerability Information

CPE: p-cpe:/a:novell:suse_linux:rmt-server, p-cpe:/a:novell:suse_linux:rmt-server-pubcloud, p-cpe:/a:novell:suse_linux:rmt-server-config, cpe:/o:novell:suse_linux:15

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: 5/7/2026

Vulnerability Publication Date: 4/2/2026

Reference Information

CVE: CVE-2026-26961, CVE-2026-26962, CVE-2026-34230, CVE-2026-34763, CVE-2026-34785, CVE-2026-34786, CVE-2026-34826, CVE-2026-34829, CVE-2026-34830, CVE-2026-34831

SuSE: SUSE-SU-2026:1745-1

Detections

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