WID-SEC-W-2026-3755
Vulnerability from csaf_certbund - Published: 2026-10-05 22:00 - Updated: 2026-10-06 22:00Summary
Atlassian Produkte (Bamboo, Bitbucket, Confluence, Crucible, Fisheye und Jira): 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: Bamboo ist ein Werkzeug zur kontinuierlichen Integration und Bereitstellung, das automatisierte Builds, Tests und Freigaben in einem einzigen Arbeitsablauf verbindet.
Bitbucket ist ein Git-Server zur Sourcecode-Versionskontrolle.
Confluence ist eine kommerzielle Wiki-Software.
Crucible ist eine Code-Review-Lösung für Unternehmensteams.
Fisheye ist ein Quellcode-Repository-Browser für Unternehmensteams.
Jira ist eine Webanwendung zur Softwareentwicklung.
Angriff: Ein entfernter, anonymer Angreifer kann eine Schwachstelle in Atlassian Bamboo, Atlassian Bitbucket, Atlassian Confluence, Atlassian Crucible, Atlassian Fisheye und Atlassian Jira ausnutzen, um Informationen offenzulegen.
Betroffene Betriebssysteme: - Linux
- Sonstiges
- UNIX
- Windows
Affected products
Known affected
15 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
|
Atlassian Bitbucket <10.5.1
Atlassian / Bitbucket
|
<10.5.1 | ||
|
Atlassian Bitbucket <10.2.8
Atlassian / Bitbucket
|
<10.2.8 | ||
|
Atlassian Jira Software <11.3.12
Atlassian / Jira
|
Software <11.3.12 | ||
|
Atlassian Bitbucket <9.4.26
Atlassian / Bitbucket
|
<9.4.26 | ||
|
Atlassian Jira Software <10.3.26
Atlassian / Jira
|
Software <10.3.26 | ||
|
Atlassian Bamboo <12.1.12
Atlassian / Bamboo
|
<12.1.12 | ||
|
Atlassian Jira Software <9.12.40
Atlassian / Jira
|
Software <9.12.40 | ||
|
Atlassian Confluence <9.2.26
Atlassian / Confluence
|
<9.2.26 | ||
|
Atlassian Crucible <4.9.15
Atlassian / Crucible
|
<4.9.15 | ||
|
Atlassian Confluence <10.2.19
Atlassian / Confluence
|
<10.2.19 | ||
|
Atlassian Bamboo <10.2.24
Atlassian / Bamboo
|
<10.2.24 | ||
|
Atlassian Jira Service Management <11.3.12
Atlassian / Jira
|
Service Management <11.3.12 | ||
|
Atlassian Jira Service Management <10.3.26
Atlassian / Jira
|
Service Management <10.3.26 | ||
|
Atlassian Jira Service Management <5.12.40
Atlassian / Jira
|
Service Management <5.12.40 | ||
|
Atlassian Fisheye <4.9.15
Atlassian / Fisheye
|
<4.9.15 |
References
4 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": "Bamboo ist ein Werkzeug zur kontinuierlichen Integration und Bereitstellung, das automatisierte Builds, Tests und Freigaben in einem einzigen Arbeitsablauf verbindet.\r\nBitbucket ist ein Git-Server zur Sourcecode-Versionskontrolle.\r\nConfluence ist eine kommerzielle Wiki-Software.\r\nCrucible ist eine Code-Review-L\u00f6sung f\u00fcr Unternehmensteams.\r\nFisheye ist ein Quellcode-Repository-Browser f\u00fcr Unternehmensteams. \r\nJira ist eine Webanwendung zur Softwareentwicklung.",
"title": "Produktbeschreibung"
},
{
"category": "summary",
"text": "Ein entfernter, anonymer Angreifer kann eine Schwachstelle in Atlassian Bamboo, Atlassian Bitbucket, Atlassian Confluence, Atlassian Crucible, Atlassian Fisheye und Atlassian Jira ausnutzen, um Informationen offenzulegen.",
"title": "Angriff"
},
{
"category": "general",
"text": "- Linux\n- Sonstiges\n- UNIX\n- Windows",
"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-2026-3755 - CSAF Version",
"url": "https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-3755.json"
},
{
"category": "self",
"summary": "WID-SEC-2026-3755 - Portal Version",
"url": "https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-3755"
},
{
"category": "external",
"summary": "Atlassian Security Advisories vom 2026-10-05",
"url": "https://confluence.atlassian.com/spaces/SECURITY/pages/1870495748/CVE-2026-21589+-+Arbitrary+File+Access+Vulnerability+impacts+Multiple+Products"
},
{
"category": "external",
"summary": "WatchTower labs - PoC CVE-2026-21589 vom 2026-10-06",
"url": "https://labs.watchtowr.com/you-wont-hear-about-these-even-in-myths-atlassian-jira-confluence-and-more-pre-auth-arbitrary-file-read-cve-2026-21589/"
}
],
"source_lang": "en-US",
"title": "Atlassian Produkte (Bamboo, Bitbucket, Confluence, Crucible, Fisheye und Jira): Schwachstelle erm\u00f6glicht Offenlegung von Informationen",
"tracking": {
"current_release_date": "2026-10-06T22:00:00.000+00:00",
"generator": {
"date": "2026-10-07T08:00:49.916+00:00",
"engine": {
"name": "BSI-WID",
"version": "1.6.0"
}
},
"id": "WID-SEC-W-2026-3755",
"initial_release_date": "2026-10-05T22:00:00.000+00:00",
"revision_history": [
{
"date": "2026-10-05T22:00:00.000+00:00",
"number": "1",
"summary": "Initiale Fassung"
},
{
"date": "2026-10-06T22:00:00.000+00:00",
"number": "2",
"summary": "PoC aufgenommen"
}
],
"status": "final",
"version": "2"
}
},
"product_tree": {
"branches": [
{
"branches": [
{
"branches": [
{
"category": "product_version_range",
"name": "\u003c10.2.24",
"product": {
"name": "Atlassian Bamboo \u003c10.2.24",
"product_id": "T060654"
}
},
{
"category": "product_version",
"name": "10.2.24",
"product": {
"name": "Atlassian Bamboo 10.2.24",
"product_id": "T060654-fixed",
"product_identification_helper": {
"cpe": "cpe:/a:atlassian:bamboo:10.2.24"
}
}
},
{
"category": "product_version_range",
"name": "\u003c12.1.12",
"product": {
"name": "Atlassian Bamboo \u003c12.1.12",
"product_id": "T060655"
}
},
{
"category": "product_version",
"name": "12.1.12",
"product": {
"name": "Atlassian Bamboo 12.1.12",
"product_id": "T060655-fixed",
"product_identification_helper": {
"cpe": "cpe:/a:atlassian:bamboo:12.1.12"
}
}
}
],
"category": "product_name",
"name": "Bamboo"
},
{
"branches": [
{
"category": "product_version_range",
"name": "\u003c9.4.26",
"product": {
"name": "Atlassian Bitbucket \u003c9.4.26",
"product_id": "T060656"
}
},
{
"category": "product_version",
"name": "9.4.26",
"product": {
"name": "Atlassian Bitbucket 9.4.26",
"product_id": "T060656-fixed",
"product_identification_helper": {
"cpe": "cpe:/a:atlassian:bitbucket:9.4.26"
}
}
},
{
"category": "product_version_range",
"name": "\u003c10.2.8",
"product": {
"name": "Atlassian Bitbucket \u003c10.2.8",
"product_id": "T060657"
}
},
{
"category": "product_version",
"name": "10.2.8",
"product": {
"name": "Atlassian Bitbucket 10.2.8",
"product_id": "T060657-fixed",
"product_identification_helper": {
"cpe": "cpe:/a:atlassian:bitbucket:10.2.8"
}
}
},
{
"category": "product_version_range",
"name": "\u003c10.5.1",
"product": {
"name": "Atlassian Bitbucket \u003c10.5.1",
"product_id": "T060658"
}
},
{
"category": "product_version",
"name": "10.5.1",
"product": {
"name": "Atlassian Bitbucket 10.5.1",
"product_id": "T060658-fixed",
"product_identification_helper": {
"cpe": "cpe:/a:atlassian:bitbucket:10.5.1"
}
}
}
],
"category": "product_name",
"name": "Bitbucket"
},
{
"branches": [
{
"category": "product_version_range",
"name": "\u003c9.2.26",
"product": {
"name": "Atlassian Confluence \u003c9.2.26",
"product_id": "T060659"
}
},
{
"category": "product_version",
"name": "9.2.26",
"product": {
"name": "Atlassian Confluence 9.2.26",
"product_id": "T060659-fixed",
"product_identification_helper": {
"cpe": "cpe:/a:atlassian:confluence:9.2.26"
}
}
},
{
"category": "product_version_range",
"name": "\u003c10.2.19",
"product": {
"name": "Atlassian Confluence \u003c10.2.19",
"product_id": "T060660"
}
},
{
"category": "product_version",
"name": "10.2.19",
"product": {
"name": "Atlassian Confluence 10.2.19",
"product_id": "T060660-fixed",
"product_identification_helper": {
"cpe": "cpe:/a:atlassian:confluence:10.2.19"
}
}
}
],
"category": "product_name",
"name": "Confluence"
},
{
"branches": [
{
"category": "product_version_range",
"name": "\u003c4.9.15",
"product": {
"name": "Atlassian Crucible \u003c4.9.15",
"product_id": "T060661"
}
},
{
"category": "product_version",
"name": "4.9.15",
"product": {
"name": "Atlassian Crucible 4.9.15",
"product_id": "T060661-fixed",
"product_identification_helper": {
"cpe": "cpe:/a:atlassian:crucible:4.9.15"
}
}
}
],
"category": "product_name",
"name": "Crucible"
},
{
"branches": [
{
"category": "product_version_range",
"name": "\u003c4.9.15",
"product": {
"name": "Atlassian Fisheye \u003c4.9.15",
"product_id": "T060662"
}
},
{
"category": "product_version",
"name": "4.9.15",
"product": {
"name": "Atlassian Fisheye 4.9.15",
"product_id": "T060662-fixed",
"product_identification_helper": {
"cpe": "cpe:/a:atlassian:fisheye:4.9.15"
}
}
}
],
"category": "product_name",
"name": "Fisheye"
},
{
"branches": [
{
"category": "product_version_range",
"name": "Service Management \u003c5.12.40",
"product": {
"name": "Atlassian Jira Service Management \u003c5.12.40",
"product_id": "T060663"
}
},
{
"category": "product_version",
"name": "Service Management 5.12.40",
"product": {
"name": "Atlassian Jira Service Management 5.12.40",
"product_id": "T060663-fixed",
"product_identification_helper": {
"cpe": "cpe:/a:atlassian:jira:service_management__5.12.40"
}
}
},
{
"category": "product_version_range",
"name": "Service Management \u003c10.3.26",
"product": {
"name": "Atlassian Jira Service Management \u003c10.3.26",
"product_id": "T060664"
}
},
{
"category": "product_version",
"name": "Service Management 10.3.26",
"product": {
"name": "Atlassian Jira Service Management 10.3.26",
"product_id": "T060664-fixed",
"product_identification_helper": {
"cpe": "cpe:/a:atlassian:jira:service_management__10.3.26"
}
}
},
{
"category": "product_version_range",
"name": "Service Management \u003c11.3.12",
"product": {
"name": "Atlassian Jira Service Management \u003c11.3.12",
"product_id": "T060665"
}
},
{
"category": "product_version",
"name": "Service Management 11.3.12",
"product": {
"name": "Atlassian Jira Service Management 11.3.12",
"product_id": "T060665-fixed",
"product_identification_helper": {
"cpe": "cpe:/a:atlassian:jira:service_management__11.3.12"
}
}
},
{
"category": "product_version_range",
"name": "Software \u003c9.12.40",
"product": {
"name": "Atlassian Jira Software \u003c9.12.40",
"product_id": "T060666"
}
},
{
"category": "product_version",
"name": "Software 9.12.40",
"product": {
"name": "Atlassian Jira Software 9.12.40",
"product_id": "T060666-fixed",
"product_identification_helper": {
"cpe": "cpe:/a:atlassian:jira:software__9.12.40"
}
}
},
{
"category": "product_version_range",
"name": "Software \u003c10.3.26",
"product": {
"name": "Atlassian Jira Software \u003c10.3.26",
"product_id": "T060667"
}
},
{
"category": "product_version",
"name": "Software 10.3.26",
"product": {
"name": "Atlassian Jira Software 10.3.26",
"product_id": "T060667-fixed",
"product_identification_helper": {
"cpe": "cpe:/a:atlassian:jira:software__10.3.26"
}
}
},
{
"category": "product_version_range",
"name": "Software \u003c11.3.12",
"product": {
"name": "Atlassian Jira Software \u003c11.3.12",
"product_id": "T060668"
}
},
{
"category": "product_version",
"name": "Software 11.3.12",
"product": {
"name": "Atlassian Jira Software 11.3.12",
"product_id": "T060668-fixed",
"product_identification_helper": {
"cpe": "cpe:/a:atlassian:jira:software__11.3.12"
}
}
}
],
"category": "product_name",
"name": "Jira"
}
],
"category": "vendor",
"name": "Atlassian"
}
]
},
"vulnerabilities": [
{
"cve": "CVE-2026-21589",
"product_status": {
"known_affected": [
"T060658",
"T060657",
"T060668",
"T060656",
"T060667",
"T060655",
"T060666",
"T060659",
"T060661",
"T060660",
"T060654",
"T060665",
"T060664",
"T060663",
"T060662"
]
},
"release_date": "2026-10-05T22:00:00.000+00:00",
"title": "CVE-2026-21589"
}
]
}
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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
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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