CVE-2021-44140Network attack vector

Arbitrary file deletion via unchecked cookie path

Published Nov 24, 2021 · Updated Aug 4, 2024

Path traversal in Apache JSPWiki 2.11.0.M8 and earlier allows remote attackers to delete arbitrary server-accessible files via logout. CookieAuthenticationLoginModule.clearLoginCookie uses the client-controlled login-cookie value to select a mapping file without first confining the path to the logincookies directory. No authentication is required; deletion is limited to files writable by the account running JSPWiki.

CVSS severity9.1
Critical
EPSS probability6.16%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Path traversal in Apache JSPWiki 2.11.0.M8 and earlier allows remote attackers to delete arbitrary server-accessible files via logout. CookieAuthenticationLoginModule.clearLoginCookie uses the client-controlled login-cookie value to select a mapping file without first confining the path to the logincookies directory. No authentication is required; deletion is limited to files writable by the account running JSPWiki.

The record

CVE
CVE-2021-44140
Published
Nov 24, 2021
Updated
Aug 4, 2024
Vendor
The Apache Software Foundation
Product
Apache JSPWiki
Classifications
CWE-276, T1070.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 24, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=Apache JSPWiki <=2.11.0.M8

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

The Apache Software Foundation · Apache JSPWikiversion=Apache JSPWiki <=2.11.0.M8

Published CVSS scores

9.1NIST National Vulnerability DatabaseCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-276Incorrect Default Permissions
T1070.004File Deletion

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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