CVE-2026-21569Disclosure(atlassian / crowd)

LOWCVSS 7.9 · HIGH

Signal is active with 2 mentions in latest observed window

Immediate actions

  • Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

NVD description

This High severity XXE (XML External Entity Injection) vulnerability was introduced in version 7.1.0 of Crowd Data Center and Server. This XXE (XML External Entity Injection) vulnerability, with a CVSS Score of 7.9, allows an authenticated attacker to access local and remote content which has high impact to confidentiality, low impact to integrity, high impact to availability, and requires no user interaction. Atlassian recommends that Crowd Data Center and Server customers upgrade to latest version, if you are unable to do so, upgrade your instance to one of the specified supported fixed versions: * Crowd Data Center and Server 7.1: Upgrade to a release greater than or equal to 7.1.3 See the release notes (https://confluence.atlassian.com/crowd/crowd-release-notes-199094.html). You can download the latest version of Crowd Data Center and Server from the download center (https://www.atlassian.com/software/crowd/download-archive). This vulnerability was reported via our Atlassian (Internal) program.

0.0/ 10 priority

Sources & remediation

Weakness type (CWE)
CWE-611

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

NONE

Momentum

NONE

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

  • crowd

Threat summary

  • 2 mentions across 1 observed day

What's happening

  • Technical details provided in 2 signals
  • Disclosure: 2 classified signals
  • 2 total mentions across 1 day

Affected systems

Vendors
Products
crowd

Deep dive

Activity timeline2 mentions / 1d
01122Mentions · 2026-01-28: 2Technical Details · 2026-01-28: 201-28
Signal classification1 categories
Disclosure
2100.0%
Referenced assets2 URLs
Full discourse2 posts
  • Vulmon Vulnerability Feed@VulmonFeeds
    Disclosure

    CVE-2026-21569 XXE Vulnerability in Atlassian Crowd Data Center and Server 7.1.0 https://vulmon.com/vulnerabilitydetails?qid=CVE-2026-21569

    Post summary

    Disclosed XXE vulnerability CVE-2026-21569 affecting Atlassian Crowd 7.1.0, with no PoC or exploitation details presented.

    0000071
    4.0K followersView on X
  • CVE@CVEnew
    Disclosure

    CVE-2026-21569 This High severity XXE (XML External Entity Injection) vulnerability was introduced in version 7.1.0 of Crowd Data Center and Server. This XXE (XML External Entit… https://www.cve.org/CVERecord?id=CVE-2026-21569

    Post summary

    The text announces a high severity XXE vulnerability (CVE-2026-21569) in Crowd Data Center 7.1.0, providing basic technical details but no PoC, exploit code, patch information, or evidence of active exploitation.

    00000199
    56.5K followersView on X
CPE platform detail1 entries

1 of 1 entries

PartVendorProductVersionTarget SWTarget HW
Appatlassiancrowd---

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