[UPDATE] [high] Atlassian products (Bamboo, Bitbucket, Confluence, Crucible, Fisheye, and Jira): Multiple vulnerabilities
An attacker can exploit multiple vulnerabilities in Atlassian Bamboo, Atlassian Bitbucket, Atlassian Confluence, Atlassian Crucible, Atlassian Fisheye, and Atlassian Jira to execute arbitrary code, conduct a denial of service attack, disclose information, perform a cross-site scripting attack, and bypass security measures.
CSIRTS triage
- What
- Multiple vulnerabilities allow an attacker to execute arbitrary code, conduct denial of service attacks, disclose information, perform cross-site scripting attacks, and bypass security measures.
- Who is affected
- Deployments of Atlassian Bamboo, Bitbucket, Confluence, Crucible, Fisheye, and Jira are affected.
- Urgency
- Remediation is urgent due to the high severity and confirmed exploitation of these vulnerabilities.
- Action
- Apply the latest security patches provided by Atlassian.
AI-assisted analysis generated from the source advisory — verify against the original.
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Details
Original advisory: https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-1608
Exploitation outlook
EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.
- Elevated exploitation riskCVE-2019-1399016.2% 30-day exploitation probability — well above the norm. Schedule remediation this cycle. Riskier than 97% of all EPSS-scored CVEs.
- Exploitation likely imminentCVE-2022-1471EPSS puts this in the most-targeted tier (99.6% 30-day exploitation probability). Prioritize alongside KEV items. Riskier than 99.9% of all EPSS-scored CVEs.
- Exploitation likely imminentCVE-2022-23521EPSS puts this in the most-targeted tier (56.3% 30-day exploitation probability). Prioritize alongside KEV items. Riskier than 99.0% of all EPSS-scored CVEs.
- Elevated exploitation riskCVE-2022-4190344.3% 30-day exploitation probability — well above the norm. Schedule remediation this cycle. Riskier than 99% of all EPSS-scored CVEs.
- Exploitation confirmedCVE-2023-22518Already exploited in the wild (CISA KEV) — the prediction phase is over. Patch now. Riskier than 99.9% of all EPSS-scored CVEs.
- Elevated exploitation riskCVE-2023-2252212.8% 30-day exploitation probability — well above the norm. Schedule remediation this cycle. Riskier than 96% of all EPSS-scored CVEs.
- Elevated exploitation riskCVE-2023-2252311.1% 30-day exploitation probability — well above the norm. Schedule remediation this cycle. Riskier than 96% of all EPSS-scored CVEs.
- Elevated exploitation riskCVE-2023-2252424.7% 30-day exploitation probability — well above the norm. Schedule remediation this cycle. Riskier than 98% of all EPSS-scored CVEs.
- Exploitation confirmedCVE-2023-22527Already exploited in the wild (CISA KEV) — the prediction phase is over. Patch now. Riskier than 99.9% of all EPSS-scored CVEs.
- Elevated exploitation riskCVE-2023-2499846.8% 30-day exploitation probability — well above the norm. Schedule remediation this cycle. Riskier than 99% of all EPSS-scored CVEs.
- Exploitation confirmedCVE-2023-46604Already exploited in the wild (CISA KEV) — the prediction phase is over. Patch now.
Referenced CVEs
Same CVEs, other sources
How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.
- medium[UPDATE] [medium] PostgreSQL JDBC Driver: Vulnerability allows Denial of Servicecert-bund
- unknownNCSC-2026-0325 [1.00] [M/H] Vulnerabilities patched in Atlassian productsncsc-nl
- highexploited[NEW] [high] Atlassian Products (Bamboo, Bitbucket, Confluence, Crucible, Fisheye, and Jira): Multiple vulnera…cert-bund
- unknownUSN-8642-1: c3p0 vulnerabilitiesubuntu
- high[UPDATE] [high] Oracle PeopleSoft: Multiple Vulnerabilitiescert-bund
- high[NEW] [high] Atlassian Bamboo, Bitbucket, Confluence, Fisheye, Crucible, Jira and Jira Service Management: Mul…cert-bund
- unknownexploitedMultiple vulnerabilities in IBM products (August 14, 2026)cert-fr-avis
- highexploited[UPDATE] [high] Oracle Communications: Multiple vulnerabilitiescert-bund
- high[UPDATE] [high] Red Hat Integration Camel for Spring Boot: Multiple vulnerabilitiescert-bund
- medium[UPDATE] [medium] Red Hat JBoss Enterprise Application Platform (bouncycastle): Vulnerability allows informati…cert-bund
- unknownMultiple vulnerabilities in SAP products (August 11, 2026)cert-fr-avis
- highexploited[UPDATE] [high] Atlassian Bamboo, Bitbucket, Confluence, Fisheye, Crucible, Jira and Jira Service Management: …cert-bund
Recent advisories for Atlassian products
A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.
- unknownNCSC-2026-0325 [1.00] [M/H] Vulnerabilities patched in Atlassian productsncsc-nl · 2026-08-24
- highexploited[NEW] [high] Atlassian Products (Bamboo, Bitbucket, Confluence, Crucible, Fisheye, and Jira): Multiple vulnera…cert-bund · 2026-08-19
- highCVE-2026-73498: MCP Atlassian is a Model Context Protocol (MCP) server for Atlassian products (Confluence and …nvd · 2026-08-12
- unknownMultiple vulnerabilities in Atlassian products (July 27, 2026)cert-fr-avis · 2026-07-27
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