SUSE-SU-2026:20600-1: important: Security update for cpp-httplib

[SLE-SECURITY-UPDATES]

# Security update for cpp-httplib

Announcement ID: SUSE-SU-2026:20600-1  
Release Date: 2026-03-02T10:20:20Z  
Rating: important  
References:

  * bsc#1246468
  * bsc#1246471

  
Cross-References:

  * CVE-2025-53628
  * CVE-2025-53629

  
CVSS scores:

  * CVE-2025-53628 ( SUSE ):  8.8
    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:H/VA:L/SC:N/SI:N/SA:N
  * CVE-2025-53628 ( SUSE ):  8.6 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:L
  * CVE-2025-53628 ( NVD ):  6.3
    CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
  * CVE-2025-53628 ( NVD ):  8.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
  * CVE-2025-53629 ( SUSE ):  8.7
    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
  * CVE-2025-53629 ( SUSE ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2025-53629 ( NVD ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

  
Affected Products:

  * SUSE Linux Enterprise Server 16.0
  * SUSE Linux Enterprise Server for SAP Applications 16.0

  
  
An update that solves two vulnerabilities can now be installed.

## Description:

This update for cpp-httplib fixes the following issues:

  * CVE-2025-53629: header can allocate memory arbitrarily in the server,
    potentially leading to its exhaustion (bsc#1246471).
  * CVE-2025-53628: HTTP header smuggling due to insecure trailers merge
    (bsc#1246468).

## Patch Instructions:

To install this SUSE update use the SUSE recommended installation methods like
YaST online_update or "zypper patch".  
Alternatively you can run the command listed for your product:

  * SUSE Linux Enterprise Server 16.0  
    zypper in -t patch SUSE-SLES-16.0-333=1

  * SUSE Linux Enterprise Server for SAP Applications 16.0  
    zypper in -t patch SUSE-SLES-16.0-333=1

## Package List:

  * SUSE Linux Enterprise Server 16.0 (aarch64 ppc64le s390x x86_64)
    * libcpp-httplib0_22-debuginfo-0.22.0-160000.4.1
    * cpp-httplib-debugsource-0.22.0-160000.4.1
    * libcpp-httplib0_22-0.22.0-160000.4.1
  * SUSE Linux Enterprise Server for SAP Applications 16.0 (ppc64le x86_64)
    * libcpp-httplib0_22-debuginfo-0.22.0-160000.4.1
    * cpp-httplib-debugsource-0.22.0-160000.4.1
    * libcpp-httplib0_22-0.22.0-160000.4.1

## References:

  * https://www.suse.com/security/cve/CVE-2025-53628.html
  * https://www.suse.com/security/cve/CVE-2025-53629.html
  * https://bugzilla.suse.com/show_bug.cgi?id=1246468
  * https://bugzilla.suse.com/show_bug.cgi?id=1246471

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