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[UPDATE] [high] Atlassian Bamboo, Bitbucket, Confluence, Jira: Multiple vulnerabilities

highCVE-2021-0341CVE-2021-31597CVE-2022-1471CVE-2022-25927CVE-2023-1370CVE-2023-3635
An attacker can exploit multiple vulnerabilities in Atlassian Bamboo, Atlassian Bitbucket, Atlassian Confluence and Atlassian Jira to execute arbitrary code, bypass security measures, manipulate or disclose data, or conduct cross-site scripting attacks.

CSIRTS triage

What
Multiple vulnerabilities across Atlassian products (Bamboo, Bitbucket, Confluence, Jira) enable code execution, auth bypass, XSS, and data manipulation.
Who is affected
Organisations running Atlassian Bamboo, Bitbucket, Confluence, or Jira are affected.
Urgency
High severity with multiple attack vectors and critical impact on confidentiality, integrity, and availability.
Action
Apply Atlassian security patches for all affected products immediately.

AI-assisted analysis generated from the source advisory — verify against the original.

Details

Source
CERT-Bund (BSI) Security Advisories (DE · national-cert · site)
Severity
high
Published
2026-08-03
Exploitation
Not in CISA KEV at last sync
Language
Machine-translated to English — verify against the original

Original advisory: https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-1229

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.

Referenced CVEs

CVECSIRTS overviewExternal
CVE-2021-0341coverage & exploitation statusNVD · CVE.org
CVE-2021-31597coverage & exploitation statusNVD · CVE.org
CVE-2022-1471coverage & exploitation statusNVD · CVE.org
CVE-2022-25927coverage & exploitation statusNVD · CVE.org
CVE-2023-1370coverage & exploitation statusNVD · CVE.org
CVE-2023-3635coverage & exploitation statusNVD · CVE.org
CVE-2023-48631coverage & exploitation statusNVD · CVE.org
CVE-2024-29371coverage & exploitation statusNVD · CVE.org
CVE-2024-45801coverage & exploitation statusNVD · CVE.org
CVE-2024-47875coverage & exploitation statusNVD · CVE.org
CVE-2025-48734coverage & exploitation statusNVD · CVE.org
CVE-2025-66020coverage & exploitation statusNVD · CVE.org
CVE-2026-21571coverage & exploitation statusNVD · CVE.org
CVE-2026-22029coverage & exploitation statusNVD · CVE.org
CVE-2026-23745coverage & exploitation statusNVD · CVE.org
CVE-2026-23950coverage & exploitation statusNVD · CVE.org
CVE-2026-24734coverage & exploitation statusNVD · CVE.org
CVE-2026-24842coverage & exploitation statusNVD · CVE.org
CVE-2026-24880coverage & exploitation statusNVD · CVE.org
CVE-2026-25547coverage & exploitation statusNVD · CVE.org
CVE-2026-25639coverage & exploitation statusNVD · CVE.org
CVE-2026-26960coverage & exploitation statusNVD · CVE.org
CVE-2026-29063coverage & exploitation statusNVD · CVE.org
CVE-2026-31802coverage & exploitation statusNVD · CVE.org
CVE-2026-33870coverage & exploitation statusNVD · CVE.org
CVE-2026-33871coverage & exploitation statusNVD · CVE.org
CVE-2026-34487coverage & exploitation statusNVD · CVE.org

Same CVEs, other sources

How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.

Recent advisories for Atlassian Bamboo

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.

More from CERT-Bund (BSI) Security Advisories