vulntracker.iovulntracker.io
© 2026 vulntracker.io

CVE-2021-24122

Apache Tomcat information disclosure

MEDIUM
5.9
CVSS Score
Published: January 14, 2021 at 02:45 PM UTC
Updated: October 8, 2026 at 09:17 PM UTC
3 products affected across 3 vendorsDebian LinuxTomcatAgile Product Lifecycle Management

Using Apache Tomcat by Apache Software Foundation?

Get instant alerts when new vulnerabilities affect Apache Tomcat - before attackers find them.

Real-time alertsTrack your software stackFree plan available
Start FreeSign In
Severity
MEDIUM5.9
Exploit prediction
EPSS 23%
SSVC
No known exploit

Description

When serving resources from a network location using the NTFS file system, Apache Tomcat versions 10.0.0-M1 to 10.0.0-M9, 9.0.0.M1 to 9.0.39, 8.5.0 to 8.5.59 and 7.0.0 to 7.0.106 were susceptible to JSP source code disclosure in some configurations. The root cause was the unexpected behaviour of the JRE API File.getCanonicalPath() which in turn was caused by the inconsistent behaviour of the Windows API (FindFirstFileW) in some circumstances.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Tomcat· Apache
95%
7.0.0 ≤ v ≤ 7.0.1068.5.0 ≤ v ≤ 8.5.599.0.1 ≤ v ≤ 9.0.39Apache Tomcat 10 ≤ v < 10.0.0-M10Apache Tomcat 7 ≤ v < 7.0.106Apache Tomcat 8.5 ≤ v < 8.5.60Apache Tomcat 9 ≤ v < 9.0.40*10.0.010.0.0 milestone110.0.0 milestone210.0.0 milestone310.0.0 milestone410.0.0 milestone510.0.0 milestone610.0.0 milestone710.0.0 milestone810.0.0 milestone98.59.0.09.0.0 milestone19.0.0 milestone109.0.0 milestone119.0.0 milestone129.0.0 milestone139.0.0 milestone149.0.0 milestone159.0.0 milestone169.0.0 milestone179.0.0 milestone189.0.0 milestone199.0.0 milestone29.0.0 milestone209.0.0 milestone219.0.0 milestone229.0.0 milestone239.0.0 milestone249.0.0 milestone259.0.0 milestone269.0.0 milestone279.0.0 milestone39.0.0 milestone49.0.0 milestone59.0.0 milestone69.0.0 milestone79.0.0 milestone89.0.0 milestone9Apache Tomcat 10Apache Tomcat 7Apache Tomcat 8.5Apache Tomcat 9
Affected range stops below 10.0.0-M10, so it looks safe — our inference, not a vendor statement
Affected range stops below 7.0.106, so it looks safe — our inference, not a vendor statement
Affected range stops below 8.5.60, so it looks safe — our inference, not a vendor statement
Affected range stops below 9.0.40, so it looks safe — our inference, not a vendor statement
Debian Linux· Debiandrupal
95%
9.0
Agile Product Lifecycle Management· Oracledrupal
95%
9.3.39.3.6

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (11)

Mailing Listx_refsource_MLISTThird Party Advisory
Source: [email protected]
http://www.openwall.com/lists/oss-security/2021/01/14/1
Mailing Listx_refsource_MLIST
Source: [email protected]
https://lists.apache.org/thread.html/r1595889b083e05986f42b944dc43060d6b083022260b6ea64d2cec52%40%3Cannounce.apache.org%3E
x_refsource_MISCMailing Listx_refsource_MLISTVendor Advisory
Source: [email protected]
https://lists.apache.org/thread.html/r1595889b083e05986f42b944dc43060d6b083022260b6ea64d2cec52%40%3Cannounce.tomcat.apache.org%3E
Mailing Listx_refsource_MLIST
Source: [email protected]
https://lists.apache.org/thread.html/r7382e1e35b9bc7c8f320b90ad77e74c13172d08034e20c18000fe710%40%3Cdev.tomee.apache.org%3E
Mailing Listx_refsource_MLIST
Source: [email protected]
https://lists.apache.org/thread.html/r776c64337495bf28b7d5597268114a888e3fad6045c40a0da0c66d4d%40%3Cdev.tomee.apache.org%3E
Mailing Listx_refsource_MLIST
Source: [email protected]
https://lists.apache.org/thread.html/r7e0bb9ea415724550e2b325e143b23e269579e54d66fcd7754bd0c20%40%3Cdev.tomcat.apache.org%3E
Mailing Listx_refsource_MLIST
Source: [email protected]
https://lists.apache.org/thread.html/rb32a73b7cb919d4f44a2596b6b951274c0004fc8b0e393d6829a45f9%40%3Cusers.tomcat.apache.org%3E
Mailing Listx_refsource_MLIST
Source: [email protected]
https://lists.apache.org/thread.html/rca833c6d42b7b9ce1563488c0929f29fcc95947d86e5e740258c8937%40%3Cdev.tomcat.apache.org%3E

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.9MEDIUM[email protected]
Attack Vector
NETWORK
Complexity
HIGH
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-200CWE-706

Get alerted

Stop reading CVE feeds looking for your own stack

Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.

Create accountSign in
Free plan, no card