CVE-2021-44140 | Arbitrary file deletion on logout

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.

Published: 2021-11-24 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2021-44140 is rated High Risk (69.9/100): CVSS Critical severity, with high exploitation likelihood (EPSS 5.87%, 90th percentile). EPSS ranks this CVE among the most likely to be exploited in the near term. EPSS rose +1.98% over the last day, indicating growing attacker interest. High exploitation likelihood—assess exposure and prioritize remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2021-44140

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2025-11-21 3.89% 5.87% +1.98%
2 2025-11-18 5.87% 3.89% -1.98%
3 2025-10-23 — 5.87% —

Full EPSS history (18 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2021-44140

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
9.1 3.1 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 5.2 [email protected]
6.4 2.0 MEDIUM
AV:N/AC:L/Au:N/C:N/I:P/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:P)
Partial availability impact.
 10.0 4.9 [email protected]

Weakness enumeration for CVE-2021-44140

GitHub Security Advisory for CVE-2021-44140

GHSA-8gw6-w5rw-4g5c · Severity: critical · Ecosystem: maven — Incorrect Default Permissions in Apache JSPWiki

OS Trackers for CVE-2021-44140

vendor priority summary link
ubuntu medium CVE-2021-44140 medium priority: Ubuntu including 1 source packages (jspwiki), 3 status rows across 3 suites (trusty, upstream, xenial): ignored 2, needs-triage 1. https://ubuntu.com/security/CVE-2021-44140

Affected software / configurations for CVE-2021-44140

Vendor Product Version Raw CPE
apache jspwiki < 2.11.0 cpe:2.3:a:apache:jspwiki:*:*:*:*:*:*:*:*

References for CVE-2021-44140

cvelogic Threat Intelligence