7.5

CVE-2019-20104: atlassian crowd

Modified
Published 06-02-2020Last modified 16-09-2024

Vulnerability summary

CVE-2019-20104 is a high (CVSS 7.5) vulnerability in atlassian crowd. EPSS estimates a 2.43% chance of exploitation in the next 30 days, higher than 84.2% of scored vulnerabilities. 1 public exploit is recorded.

Priority
Prioritisepublic exploit

Public exploit (reference, Date unknown)

Source freshness unavailable

How is this decided?
CVSS score
7.5/10
010
High · v3.1 (NVD)
EPSS score
2.43%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits1reference

Timeline

  1. 06-02-2020
    PublishedVulnerability first disclosed.
  2. 16-09-2024
    Last modifiedVulnerability information updated.

Description

The OpenID client application in Atlassian Crowd before version 3.6.2, and from version 3.7.0 before 3.7.1 allows remote attackers to perform a Denial of Service attack via an XML Entity Expansion vulnerability.

CVSS metrics

2 scores · 1 source · 2 versions

EPSS trend

Probability

2.43%

Chance of exploitation in the next 30 days

Percentile

84%

Versus all other CVEs

30-day change

No change 0.00 pp

From 2.43% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

1 found
  • referenceUnverified

    Exploit Reference (zeroauth.ltd)

    Maturity: unknown

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.

Atlassian1 product
  • crowd≥ unspecified, < 3.6.2 | ≥ 3.7.0, < unspecified | ≥ unspecified, < 3.7.1 | < 3.2.11 | ≥ 3.3.0, < 3.3.8 | ≥ 3.4.0, < 3.4.7 | ≥ 3.5.0, < 3.5.2 | ≥ 3.6.0, < 3.6.2 | ≥ 3.6.3, < 3.7.1 | ≥ 3.7.2, < 4.0.0

1 vendor · 1 product

References

2 links