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Fencer Vulns
critical 9.1

CVE-2021-44140 json

Arbitrary file deletion on logout

published 2021-11-24 4 y ago modified 2026-06-17 4 mo ago also GHSA-8gw6-w5rw-4g5c , EUVD-2021-2323

cvss
9.1
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
6.4%
EPSS 6.4% chance of exploitation in 30 days, percentile 93%
public exploits
0
none known

Summary

Remote attackers may delete arbitrary files in a system hosting a JSPWiki instance, versions up to 2.11.0.M8, by using a carefuly crafted http request on logout, given that those files are reachable to the user running the JSPWiki instance. Apache JSPWiki users should upgrade to 2.11.0 or later.

Patch / fix

  • maven org.apache.jspwiki:jspwiki-main 2.11.0
  • apache jspwiki 2.11.0

Exploit prediction

6.36% chance of exploitation in the next 30 days, higher than 93% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.1 9.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
NVD 2.0 6.4 AV:N/AC:L/Au:N/C:N/I:P/A:P
GitHub 3.1 9.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H

Affected packages

ecosystem package affected fixed in
maven org.apache.jspwiki:jspwiki-main
<2.11.0
2.11.0

Affected products

  • Apache Software Foundation Apache JSPWiki

Classification

Weakness
  • CWE-276 Incorrect Default Permissions

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.