WID-SEC-W-2026-1448
Vulnerability from csaf_certbund - Published: 2026-05-10 22:00 - Updated: 2026-06-16 22:00Summary
expat: Schwachstelle ermöglicht Denial of Service
Severity
Niedrig
Notes
Das BSI ist als Anbieter für die eigenen, zur Nutzung bereitgestellten Inhalte nach den allgemeinen Gesetzen verantwortlich. Nutzerinnen und Nutzer sind jedoch dafür verantwortlich, die Verwendung und/oder die Umsetzung der mit den Inhalten bereitgestellten Informationen sorgfältig im Einzelfall zu prüfen.
Produktbeschreibung: Expat ist ein XML Parser, der in der Programmiersprache-C geschrieben ist.
Angriff: Ein lokaler Angreifer kann eine Schwachstelle in expat ausnutzen, um einen Denial of Service Angriff durchzuführen.
Betroffene Betriebssysteme: - Sonstiges
- UNIX
Affected products
Known affected
7 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
|
Red Hat Enterprise Linux
Red Hat
|
cpe:/o:redhat:enterprise_linux:-
|
— | |
|
IBM Tivoli Monitoring
IBM
|
cpe:/a:ibm:tivoli_monitoring:-
|
— | |
|
SUSE openSUSE
SUSE
|
cpe:/o:suse:opensuse:-
|
— | |
|
Microsoft Azure Linux azl3
Microsoft / Azure Linux
|
cpe:/o:microsoft:azure_linux:azl3
|
azl3 | |
|
Oracle Linux
Oracle
|
cpe:/o:oracle:linux:-
|
— | |
|
RESF Rocky Linux
RESF
|
cpe:/o:resf:rocky_linux:-
|
— | |
|
Open Source expat <2.8.1
Open Source / expat
|
<2.8.1 |
References
15 references
{
"document": {
"aggregate_severity": {
"text": "niedrig"
},
"category": "csaf_base",
"csaf_version": "2.0",
"distribution": {
"tlp": {
"label": "WHITE",
"url": "https://www.first.org/tlp/"
}
},
"lang": "de-DE",
"notes": [
{
"category": "legal_disclaimer",
"text": "Das BSI ist als Anbieter f\u00fcr die eigenen, zur Nutzung bereitgestellten Inhalte nach den allgemeinen Gesetzen verantwortlich. Nutzerinnen und Nutzer sind jedoch daf\u00fcr verantwortlich, die Verwendung und/oder die Umsetzung der mit den Inhalten bereitgestellten Informationen sorgf\u00e4ltig im Einzelfall zu pr\u00fcfen."
},
{
"category": "description",
"text": "Expat ist ein XML Parser, der in der Programmiersprache-C geschrieben ist.",
"title": "Produktbeschreibung"
},
{
"category": "summary",
"text": "Ein lokaler Angreifer kann eine Schwachstelle in expat ausnutzen, um einen Denial of Service Angriff durchzuf\u00fchren.",
"title": "Angriff"
},
{
"category": "general",
"text": "- Sonstiges\n- UNIX",
"title": "Betroffene Betriebssysteme"
}
],
"publisher": {
"category": "other",
"contact_details": "csaf-provider@cert-bund.de",
"name": "Bundesamt f\u00fcr Sicherheit in der Informationstechnik",
"namespace": "https://www.bsi.bund.de"
},
"references": [
{
"category": "self",
"summary": "WID-SEC-W-2026-1448 - CSAF Version",
"url": "https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-1448.json"
},
{
"category": "self",
"summary": "WID-SEC-2026-1448 - Portal Version",
"url": "https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-1448"
},
{
"category": "external",
"summary": "GitHub Advisory Database vom 2026-05-10",
"url": "https://github.com/advisories/GHSA-R396-2Q2C-PJHR"
},
{
"category": "external",
"summary": "CVERecord vom 2026-05-10",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-45186"
},
{
"category": "external",
"summary": "Microsoft Security Update Guide vom 2026-05-12",
"url": "https://msrc.microsoft.com/update-guide/"
},
{
"category": "external",
"summary": "openSUSE Security Update OPENSUSE-SU-2026:10787-1 vom 2026-05-17",
"url": "https://lists.opensuse.org/archives/list/security-announce@lists.opensuse.org/thread/FWQALTYUWRG35TZRKJQDA74Y6XTFPYE6/"
},
{
"category": "external",
"summary": "Red Hat Security Advisory RHSA-2026:22721 vom 2026-06-03",
"url": "https://access.redhat.com/errata/RHSA-2026:22721"
},
{
"category": "external",
"summary": "Red Hat Security Advisory RHSA-2026:23230 vom 2026-06-04",
"url": "https://access.redhat.com/errata/RHSA-2026:23230"
},
{
"category": "external",
"summary": "Oracle Linux Security Advisory ELSA-2026-22721 vom 2026-06-04",
"url": "http://linux.oracle.com/errata/ELSA-2026-22721.html"
},
{
"category": "external",
"summary": "Rocky Linux Security Advisory RLSA-2026:22721 vom 2026-06-05",
"url": "https://errata.build.resf.org/RLSA-2026:22721"
},
{
"category": "external",
"summary": "Red Hat Security Advisory RHSA-2026:22715 vom 2026-06-03",
"url": "https://access.redhat.com/errata/RHSA-2026:22715"
},
{
"category": "external",
"summary": "Rocky Linux Security Advisory RLSA-2026:23230 vom 2026-06-05",
"url": "https://errata.build.resf.org/RLSA-2026:23230"
},
{
"category": "external",
"summary": "Rocky Linux Security Advisory RLSA-2026:22715 vom 2026-06-05",
"url": "https://errata.build.resf.org/RLSA-2026:22715"
},
{
"category": "external",
"summary": "IBM Security Bulletin 7275398 vom 2026-06-08",
"url": "https://www.ibm.com/support/pages/node/7275398"
},
{
"category": "external",
"summary": "Red Hat Security Advisory RHSA-2026:26319 vom 2026-06-16",
"url": "https://access.redhat.com/errata/RHSA-2026:26319"
}
],
"source_lang": "en-US",
"title": "expat: Schwachstelle erm\u00f6glicht Denial of Service",
"tracking": {
"current_release_date": "2026-06-16T22:00:00.000+00:00",
"generator": {
"date": "2026-06-17T08:45:06.090+00:00",
"engine": {
"name": "BSI-WID",
"version": "1.6.0"
}
},
"id": "WID-SEC-W-2026-1448",
"initial_release_date": "2026-05-10T22:00:00.000+00:00",
"revision_history": [
{
"date": "2026-05-10T22:00:00.000+00:00",
"number": "1",
"summary": "Initiale Fassung"
},
{
"date": "2026-05-11T22:00:00.000+00:00",
"number": "2",
"summary": "Neue Updates aufgenommen"
},
{
"date": "2026-05-17T22:00:00.000+00:00",
"number": "3",
"summary": "Neue Updates von openSUSE aufgenommen"
},
{
"date": "2026-06-02T22:00:00.000+00:00",
"number": "4",
"summary": "Neue Updates von Red Hat aufgenommen"
},
{
"date": "2026-06-04T22:00:00.000+00:00",
"number": "5",
"summary": "Neue Updates von Red Hat, Oracle Linux und Rocky Enterprise Software Foundation aufgenommen"
},
{
"date": "2026-06-07T22:00:00.000+00:00",
"number": "6",
"summary": "Neue Updates von Rocky Enterprise Software Foundation aufgenommen"
},
{
"date": "2026-06-08T22:00:00.000+00:00",
"number": "7",
"summary": "Neue Updates von IBM aufgenommen"
},
{
"date": "2026-06-16T22:00:00.000+00:00",
"number": "8",
"summary": "Neue Updates von Red Hat aufgenommen"
}
],
"status": "final",
"version": "8"
}
},
"product_tree": {
"branches": [
{
"branches": [
{
"category": "product_name",
"name": "IBM Tivoli Monitoring",
"product": {
"name": "IBM Tivoli Monitoring",
"product_id": "T011128",
"product_identification_helper": {
"cpe": "cpe:/a:ibm:tivoli_monitoring:-"
}
}
}
],
"category": "vendor",
"name": "IBM"
},
{
"branches": [
{
"branches": [
{
"category": "product_version",
"name": "azl3",
"product": {
"name": "Microsoft Azure Linux azl3",
"product_id": "T049210",
"product_identification_helper": {
"cpe": "cpe:/o:microsoft:azure_linux:azl3"
}
}
}
],
"category": "product_name",
"name": "Azure Linux"
}
],
"category": "vendor",
"name": "Microsoft"
},
{
"branches": [
{
"branches": [
{
"category": "product_version_range",
"name": "\u003c2.8.1",
"product": {
"name": "Open Source expat \u003c2.8.1",
"product_id": "T053764"
}
},
{
"category": "product_version",
"name": "2.8.1",
"product": {
"name": "Open Source expat 2.8.1",
"product_id": "T053764-fixed",
"product_identification_helper": {
"cpe": "cpe:/a:expat:expat:2.8.1"
}
}
}
],
"category": "product_name",
"name": "expat"
}
],
"category": "vendor",
"name": "Open Source"
},
{
"branches": [
{
"category": "product_name",
"name": "Oracle Linux",
"product": {
"name": "Oracle Linux",
"product_id": "T004914",
"product_identification_helper": {
"cpe": "cpe:/o:oracle:linux:-"
}
}
}
],
"category": "vendor",
"name": "Oracle"
},
{
"branches": [
{
"category": "product_name",
"name": "RESF Rocky Linux",
"product": {
"name": "RESF Rocky Linux",
"product_id": "T032255",
"product_identification_helper": {
"cpe": "cpe:/o:resf:rocky_linux:-"
}
}
}
],
"category": "vendor",
"name": "RESF"
},
{
"branches": [
{
"category": "product_name",
"name": "Red Hat Enterprise Linux",
"product": {
"name": "Red Hat Enterprise Linux",
"product_id": "67646",
"product_identification_helper": {
"cpe": "cpe:/o:redhat:enterprise_linux:-"
}
}
}
],
"category": "vendor",
"name": "Red Hat"
},
{
"branches": [
{
"category": "product_name",
"name": "SUSE openSUSE",
"product": {
"name": "SUSE openSUSE",
"product_id": "T027843",
"product_identification_helper": {
"cpe": "cpe:/o:suse:opensuse:-"
}
}
}
],
"category": "vendor",
"name": "SUSE"
}
]
},
"vulnerabilities": [
{
"cve": "CVE-2026-45186",
"product_status": {
"known_affected": [
"67646",
"T011128",
"T027843",
"T049210",
"T004914",
"T032255",
"T053764"
]
},
"release_date": "2026-05-10T22:00:00.000+00:00",
"title": "CVE-2026-45186"
}
]
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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