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Fencer Vulns
medium 5.3

CVE-2020-29453 json

The CachingResourceDownloadRewriteRule class in Jira Server and Jira Data Center before version 8.5.11, from 8.6.0 before 8.13.3, and from…

published 2021-02-18 5 y ago modified 2026-06-17 4 mo ago also EUVD-2020-21826

cvss
5.3
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
20.3%
EPSS 20.3% chance of exploitation in 30 days, percentile 97%
public exploits
0
none known, plus a Nuclei check

Summary

The CachingResourceDownloadRewriteRule class in Jira Server and Jira Data Center before version 8.5.11, from 8.6.0 before 8.13.3, and from 8.14.0 before 8.15.0 allowed unauthenticated remote attackers to read arbitrary files within WEB-INF and META-INF directories via an incorrect path access check.

Patch / fix

  • Atlassian Jira Server 8.5.11, 8.13.3, 8.15.0
  • Atlassian Jira Data Center 8.5.11, 8.13.3, 8.15.0

Exploit prediction

20.27% chance of exploitation in the next 30 days, higher than 97% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • Nuclei template Jira Server Pre-Auth - Arbitrary File Retrieval (WEB-INF, META-INF) nuclei detection template

CVSS scores

assigned by version score vector
NVD 3.1 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:P/I:N/A:N

Affected products

  • Atlassian Jira Server
  • Atlassian Jira Data Center

Classification

Weakness
  • CWE-22 Improper Limitation of a Pathname to a Restricted Directory

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.