WID-SEC-W-2026-3796
Vulnerability from csaf_certbund - Published: 2026-10-07 22:00 - Updated: 2026-11-01 23:00Summary
expat: Schwachstelle ermöglicht Offenlegung von Informationen
Severity
Hoch
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 entfernter, anonymer Angreifer kann eine Schwachstelle in expat ausnutzen, um Informationen offenzulegen, was möglicherweise weitere Angriffe ermöglicht.
Betroffene Betriebssysteme: - Sonstiges
- UNIX
Affected products
Known affected
8 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
|
Oracle Linux
Oracle
|
cpe:/o:oracle:linux:-
|
— | |
|
Debian Linux
Debian
|
cpe:/o:debian:debian_linux:-
|
— | |
|
RESF Rocky Linux
RESF
|
cpe:/o:resf:rocky_linux:-
|
— | |
|
Red Hat Enterprise Linux
Red Hat
|
cpe:/o:redhat:enterprise_linux:-
|
— | |
|
SUSE openSUSE
SUSE
|
cpe:/o:suse:opensuse:-
|
— | |
|
SUSE Linux
SUSE
|
cpe:/o:suse:suse_linux:-
|
— | |
|
IBM AIX
IBM
|
cpe:/o:ibm:aix:-
|
— | |
|
Open Source expat <2.9.0
Open Source / expat
|
<2.9.0 |
References
26 references
{
"document": {
"aggregate_severity": {
"text": "hoch"
},
"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 entfernter, anonymer Angreifer kann eine Schwachstelle in expat ausnutzen, um Informationen offenzulegen, was m\u00f6glicherweise weitere Angriffe erm\u00f6glicht.",
"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-2026-3796 - CSAF Version",
"url": "https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-3796.json"
},
{
"category": "self",
"summary": "WID-SEC-2026-3796 - Portal Version",
"url": "https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-3796"
},
{
"category": "external",
"summary": "RedHat Customer Portal vom 2026-10-07",
"url": "https://access.redhat.com/security/cve/cve-2026-77214"
},
{
"category": "external",
"summary": "Red Hat Bugtracker 2547476 vom 2026-10-07",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2547476"
},
{
"category": "external",
"summary": "Libexpat Release",
"url": "https://github.com/libexpat/libexpat/releases/tag/R_2_9_0"
},
{
"category": "external",
"summary": "Libexpat Release",
"url": "https://seclists.org/oss-sec/2026/q4/55"
},
{
"category": "external",
"summary": "SUSE Security Update SUSE-SU-2026:4619-1 vom 2026-10-12",
"url": "https://lists.suse.com/pipermail/sle-security-updates/2026-October/029767.html"
},
{
"category": "external",
"summary": "SUSE Security Update SUSE-SU-2026:4623-1 vom 2026-10-12",
"url": "https://lists.suse.com/pipermail/sle-security-updates/2026-October/029763.html"
},
{
"category": "external",
"summary": "SUSE Security Update SUSE-SU-2026:4615-1 vom 2026-10-12",
"url": "https://lists.suse.com/pipermail/sle-security-updates/2026-October/029771.html"
},
{
"category": "external",
"summary": "Debian Security Advisory DSA-6566 vom 2026-10-16",
"url": "https://security-tracker.debian.org/tracker/DSA-6566-1"
},
{
"category": "external",
"summary": "IBM Security Bulletin 7293240 vom 2026-10-21",
"url": "https://aix.software.ibm.com/aix/efixes/security/python_advisory22.asc"
},
{
"category": "external",
"summary": "Red Hat Security Advisory RHSA-2026:85985 vom 2026-10-20",
"url": "https://access.redhat.com/errata/RHSA-2026:85985"
},
{
"category": "external",
"summary": "Debian Security Advisory DLA-4849 vom 2026-10-22",
"url": "https://lists.debian.org/debian-lts-announce/2026/10/msg00043.html"
},
{
"category": "external",
"summary": "Oracle Linux Security Advisory ELSA-2026-88248 vom 2026-10-22",
"url": "https://linux.oracle.com/errata/ELSA-2026-88248.html"
},
{
"category": "external",
"summary": "Oracle Linux Security Advisory ELSA-2026-88247 vom 2026-10-23",
"url": "https://linux.oracle.com/errata/ELSA-2026-88247.html"
},
{
"category": "external",
"summary": "Red Hat Security Advisory RHSA-2026:88248 vom 2026-10-22",
"url": "https://access.redhat.com/errata/RHSA-2026:88248"
},
{
"category": "external",
"summary": "Rocky Linux Security Advisory RLSA-2026:88247 vom 2026-10-23",
"url": "https://errata.build.resf.org/RLSA-2026:88247"
},
{
"category": "external",
"summary": "Red Hat Security Advisory RHSA-2026:88247 vom 2026-10-22",
"url": "https://access.redhat.com/errata/RHSA-2026:88247"
},
{
"category": "external",
"summary": "openSUSE Security Update OPENSUSE-SU-2026:12100-1 vom 2026-10-22",
"url": "https://lists.opensuse.org/archives/list/security-announce@lists.opensuse.org/thread/J4WESN4HAMFBE7LZ527BB3JJ74CXQSVH/"
},
{
"category": "external",
"summary": "Rocky Linux Security Advisory RLSA-2026:88248 vom 2026-10-23",
"url": "https://errata.build.resf.org/RLSA-2026:88248"
},
{
"category": "external",
"summary": "SUSE Security Update SUSE-SU-2026:24323-1 vom 2026-10-26",
"url": "https://lists.suse.com/pipermail/sle-security-updates/2026-October/030089.html"
},
{
"category": "external",
"summary": "Red Hat Security Advisory RHSA-2026:92323 vom 2026-10-29",
"url": "https://access.redhat.com/errata/RHSA-2026:92323"
},
{
"category": "external",
"summary": "Oracle Linux Security Advisory ELSA-2026-92323 vom 2026-10-30",
"url": "http://linux.oracle.com/errata/ELSA-2026-92323.html"
},
{
"category": "external",
"summary": "Rocky Linux Security Advisory RLSA-2026:92323 vom 2026-10-30",
"url": "https://errata.build.resf.org/RLSA-2026:92323"
},
{
"category": "external",
"summary": "SUSE Security Update SUSE-SU-2026:24460-1 vom 2026-10-30",
"url": "https://lists.suse.com/pipermail/sle-security-updates/2026-October/030260.html"
},
{
"category": "external",
"summary": "openSUSE Security Update OPENSUSE-SU-2026:22177-1 vom 2026-10-31",
"url": "https://lists.opensuse.org/archives/list/security-announce@lists.opensuse.org/thread/SFXISROZSBFHQZAFLRARQWYFJH6FAIVQ/"
}
],
"source_lang": "en-US",
"title": "expat: Schwachstelle erm\u00f6glicht Offenlegung von Informationen",
"tracking": {
"current_release_date": "2026-11-01T23:00:00.000+00:00",
"generator": {
"date": "2026-11-02T11:53:05.764+00:00",
"engine": {
"name": "BSI-WID",
"version": "1.7.0"
}
},
"id": "WID-SEC-W-2026-3796",
"initial_release_date": "2026-10-07T22:00:00.000+00:00",
"revision_history": [
{
"date": "2026-10-07T22:00:00.000+00:00",
"number": "1",
"summary": "Initiale Fassung"
},
{
"date": "2026-10-12T22:00:00.000+00:00",
"number": "2",
"summary": "Neue Updates von SUSE aufgenommen"
},
{
"date": "2026-10-15T22:00:00.000+00:00",
"number": "3",
"summary": "Neue Updates von Debian aufgenommen"
},
{
"date": "2026-10-20T22:00:00.000+00:00",
"number": "4",
"summary": "Neue Updates von IBM und Red Hat aufgenommen"
},
{
"date": "2026-10-21T22:00:00.000+00:00",
"number": "5",
"summary": "Neue Updates von Debian aufgenommen"
},
{
"date": "2026-10-22T22:00:00.000+00:00",
"number": "6",
"summary": "Neue Updates von Oracle Linux, Red Hat, Rocky Enterprise Software Foundation und openSUSE aufgenommen"
},
{
"date": "2026-10-25T23:00:00.000+00:00",
"number": "7",
"summary": "Neue Updates von Rocky Enterprise Software Foundation und SUSE aufgenommen"
},
{
"date": "2026-10-28T23:00:00.000+00:00",
"number": "8",
"summary": "Neue Updates von Red Hat aufgenommen"
},
{
"date": "2026-10-29T23:00:00.000+00:00",
"number": "9",
"summary": "Neue Updates von Oracle Linux aufgenommen"
},
{
"date": "2026-11-01T23:00:00.000+00:00",
"number": "10",
"summary": "Neue Updates von SUSE und openSUSE aufgenommen"
}
],
"status": "final",
"version": "10"
}
},
"product_tree": {
"branches": [
{
"branches": [
{
"category": "product_name",
"name": "Debian Linux",
"product": {
"name": "Debian Linux",
"product_id": "2951",
"product_identification_helper": {
"cpe": "cpe:/o:debian:debian_linux:-"
}
}
}
],
"category": "vendor",
"name": "Debian"
},
{
"branches": [
{
"category": "product_name",
"name": "IBM AIX",
"product": {
"name": "IBM AIX",
"product_id": "T039245",
"product_identification_helper": {
"cpe": "cpe:/o:ibm:aix:-"
}
}
}
],
"category": "vendor",
"name": "IBM"
},
{
"branches": [
{
"branches": [
{
"category": "product_version_range",
"name": "\u003c2.9.0",
"product": {
"name": "Open Source expat \u003c2.9.0",
"product_id": "T060795"
}
},
{
"category": "product_version",
"name": "2.9.0",
"product": {
"name": "Open Source expat 2.9.0",
"product_id": "T060795-fixed",
"product_identification_helper": {
"cpe": "cpe:/a:expat:expat:2.9.0"
}
}
}
],
"category": "product_name",
"name": "expat"
}
],
"category": "vendor",
"name": "Open Source"
},
{
"branches": [
{
"category": "product_name",
"name": "Oracle Linux",
"product": {
"name": "Oracle Linux",
"product_id": "T056236",
"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": "T054581",
"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 Linux",
"product": {
"name": "SUSE Linux",
"product_id": "T054646",
"product_identification_helper": {
"cpe": "cpe:/o:suse:suse_linux:-"
}
}
},
{
"category": "product_name",
"name": "SUSE openSUSE",
"product": {
"name": "SUSE openSUSE",
"product_id": "T055946",
"product_identification_helper": {
"cpe": "cpe:/o:suse:opensuse:-"
}
}
}
],
"category": "vendor",
"name": "SUSE"
}
]
},
"vulnerabilities": [
{
"cve": "CVE-2026-77214",
"product_status": {
"known_affected": [
"T056236",
"2951",
"T054581",
"67646",
"T055946",
"T054646",
"T039245",
"T060795"
]
},
"release_date": "2026-10-07T22:00:00.000+00:00",
"title": "CVE-2026-77214"
}
]
}
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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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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
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