OESA-2026-4391

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Source

https://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2026-4391

Import Source

https://repo.openeuler.org/security/data/osv/OESA-2026-4391.json

JSON Data

https://api.osv.dev/v1/vulns/OESA-2026-4391

Upstream

CVE (3)

CVE-2026-12547
CVE-2026-66337
CVE-2026-66338

Published

2026-10-16T12:00:06Z

Modified

2026-10-16T12:15:13Z

Severity

6.5 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L CVSS Calculator

Summary

libsoup security update

Details

libsoup is an HTTP client/server library for GNOME. It uses GObjects and the glib main loop, to integrate well with GNOME applications, and also has a synchronous API, for use in threaded applications.

Security Fix(es):

SoupAuthManager caches proxy authentication credentials without scoping them to the proxy authority (host:port). When the proxy configuration changes (e.g., via system settings or WPAD), cached Proxy-Authorization headers from the previous proxy are sent to the new proxy, leaking credentials.(CVE-2026-12547)

A flaw was found in libsoup. An unsigned integer underflow in the soup_filter_input_stream_read_until() function causes a heap buffer over-read when parsing multipart HTTP responses. A malicious HTTP server can exploit this by sending a crafted multipart response, potentially causing the client application to crash or disclose sensitive heap memory.(CVE-2026-66337)

A flaw was found in libsoup. The chunked transfer encoding parser uses a permissive parsing function for chunk sizes that silently accepts inputs violating RFC 9112, including leading whitespace, plus sign prefixes, and trailing invalid characters. When libsoup operates behind a strict frontend proxy, this parsing differential can be exploited to smuggle HTTP requests.(CVE-2026-66338)

Database specific

{
    "severity":  "Medium"
}

References

Affected packages

openEuler:24.03-LTS-SP4 / libsoup

Package

Name: libsoup
Purl: pkg:rpm/openEuler/libsoup&distro=openEuler-24.03-LTS-SP4

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0 Unknown introduced version / All previous versions are affected

Fixed

2.74.3-29.oe2403sp4

Ecosystem specific

{
    "aarch64":  [
        "libsoup-2.74.3-29.oe2403sp4.aarch64.rpm",
        "libsoup-debuginfo-2.74.3-29.oe2403sp4.aarch64.rpm",
        "libsoup-debugsource-2.74.3-29.oe2403sp4.aarch64.rpm",
        "libsoup-devel-2.74.3-29.oe2403sp4.aarch64.rpm"
    ],
    "noarch":  [
        "libsoup-help-2.74.3-29.oe2403sp4.noarch.rpm"
    ],
    "src":  [
        "libsoup-2.74.3-29.oe2403sp4.src.rpm"
    ],
    "x86_64":  [
        "libsoup-2.74.3-29.oe2403sp4.x86_64.rpm",
        "libsoup-debuginfo-2.74.3-29.oe2403sp4.x86_64.rpm",
        "libsoup-debugsource-2.74.3-29.oe2403sp4.x86_64.rpm",
        "libsoup-devel-2.74.3-29.oe2403sp4.x86_64.rpm"
    ]
}

Database specific

source

"https://repo.openeuler.org/security/data/osv/OESA-2026-4391.json"