CVE-2019-0221

CVE-2019-0221 is a medium-severity vulnerability in Apache Tomcat with a CVSS 3.x base score of 6.1. Its EPSS exploit-prediction score of 46% places it in the 99th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-79.

Key facts

• Severity: Medium (CVSS 3.x base score 6.1)
• CVSS v2: 4.3
• EPSS exploit prediction: 46% (99th percentile)
• Actively exploited: Not listed in CISA KEV
• Weakness: CWE-79
• Affected product: Apache Tomcat
• Published: 2019-05-28
• Last modified: 2026-06-17

Description

The SSI printenv command in Apache Tomcat 9.0.0.M1 to 9.0.0.17, 8.5.0 to 8.5.39 and 7.0.0 to 7.0.93 echoes user provided data without escaping and is, therefore, vulnerable to XSS. SSI is disabled by default. The printenv command is intended for debugging and is unlikely to be present in a production website.

Frequently asked questions

What is CVE-2019-0221?

The SSI printenv command in Apache Tomcat 9.0.0.M1 to 9.0.0.17, 8.5.0 to 8.5.39 and 7.0.0 to 7.0.93 echoes user provided data without escaping and is, therefore, vulnerable to XSS. SSI is disabled by default. The printenv command is intended for debugging and is unlikely to be present in a production website.

How severe is CVE-2019-0221?

CVE-2019-0221 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2019-0221 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 46% (99th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-0221?

CVE-2019-0221 primarily affects Apache Tomcat. In total, 28 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2019-0221?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2019-0221 published?

CVE-2019-0221 was published on 2019-05-28 and last updated on 2026-06-17.

References

• http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00090.html
• http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00054.html
• http://packetstormsecurity.com/files/163457/Apache-Tomcat-9.0.0.M1-Cross-Site-Scripting.html
• http://seclists.org/fulldisclosure/2019/May/50
• http://www.securityfocus.com/bid/108545
• https://access.redhat.com/errata/RHSA-2019:3929
• https://access.redhat.com/errata/RHSA-2019:3931
• https://lists.apache.org/thread.html/6e6e9eacf7b28fd63d249711e9d3ccd4e0a83f556e324aee37be5a8c%40%3Cannounce.tomcat.apache.org%3E
• https://lists.apache.org/thread.html/r3bbb800a816d0a51eccc5a228c58736960a9fffafa581a225834d97d%40%3Cdev.tomcat.apache.org%3E
• https://lists.apache.org/thread.html/r48c1444845fe15a823e1374674bfc297d5008a5453788099ea14caf0%40%3Cdev.tomcat.apache.org%3E
• https://lists.apache.org/thread.html/r6ccee4e849bc77df0840c7f853f6bd09d426f6741247da2b7429d5d9%40%3Cdev.tomcat.apache.org%3E
• https://lists.apache.org/thread.html/r6d03e45b81eab03580cf7f8bb51cb3e9a1b10a2cc0c6a2d3cc92ed0c%40%3Cannounce.apache.org%3E
• https://lists.apache.org/thread.html/r9136ff5b13e4f1941360b5a309efee2c114a14855578c3a2cbe5d19c%40%3Cdev.tomcat.apache.org%3E
• https://lists.apache.org/thread.html/raba0fabaf4d56d4325ab2aca8814f0b30a237ab83d8106b115ee279a%40%3Cdev.tomcat.apache.org%3E
• https://lists.debian.org/debian-lts-announce/2019/05/msg00044.html
• https://lists.debian.org/debian-lts-announce/2019/08/msg00015.html
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NPHQEL5AQ6LZSZD2Y6TYZ4RC3WI7NXJ3/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZQTZ5BJ5F4KV6N53SGNKSW3UY5DBIQ46/
• https://seclists.org/bugtraq/2019/Dec/43
• https://security.gentoo.org/glsa/202003-43
• https://security.netapp.com/advisory/ntap-20190606-0001/
• https://support.f5.com/csp/article/K13184144?utm_source=f5support&amp%3Butm_medium=RSS
• https://usn.ubuntu.com/4128-1/
• https://usn.ubuntu.com/4128-2/
• https://www.debian.org/security/2019/dsa-4596
• https://www.oracle.com/security-alerts/cpuApr2021.html
• https://www.oracle.com/security-alerts/cpuapr2020.html
• https://www.oracle.com/security-alerts/cpujan2020.html
• https://wwws.nightwatchcybersecurity.com/2019/05/27/xss-in-ssi-printenv-command-apache-tomcat-cve-2019-0221/

Affected products (28)

• cpe:2.3:a:apache:tomcat:*:*:*:*:*:*:*:*
• cpe:2.3:a:apache:tomcat:9.0.0:milestone1:*:*:*:*:*:*
• cpe:2.3:a:apache:tomcat:9.0.0:milestone10:*:*:*:*:*:*
• cpe:2.3:a:apache:tomcat:9.0.0:milestone11:*:*:*:*:*:*
• cpe:2.3:a:apache:tomcat:9.0.0:milestone12:*:*:*:*:*:*
• cpe:2.3:a:apache:tomcat:9.0.0:milestone13:*:*:*:*:*:*
• cpe:2.3:a:apache:tomcat:9.0.0:milestone14:*:*:*:*:*:*
• cpe:2.3:a:apache:tomcat:9.0.0:milestone15:*:*:*:*:*:*
• cpe:2.3:a:apache:tomcat:9.0.0:milestone16:*:*:*:*:*:*
• cpe:2.3:a:apache:tomcat:9.0.0:milestone17:*:*:*:*:*:*
• cpe:2.3:a:apache:tomcat:9.0.0:milestone18:*:*:*:*:*:*
• cpe:2.3:a:apache:tomcat:9.0.0:milestone19:*:*:*:*:*:*
• cpe:2.3:a:apache:tomcat:9.0.0:milestone2:*:*:*:*:*:*
• cpe:2.3:a:apache:tomcat:9.0.0:milestone20:*:*:*:*:*:*
• cpe:2.3:a:apache:tomcat:9.0.0:milestone21:*:*:*:*:*:*
• cpe:2.3:a:apache:tomcat:9.0.0:milestone22:*:*:*:*:*:*
• cpe:2.3:a:apache:tomcat:9.0.0:milestone23:*:*:*:*:*:*
• cpe:2.3:a:apache:tomcat:9.0.0:milestone24:*:*:*:*:*:*
• cpe:2.3:a:apache:tomcat:9.0.0:milestone25:*:*:*:*:*:*
• cpe:2.3:a:apache:tomcat:9.0.0:milestone26:*:*:*:*:*:*
• cpe:2.3:a:apache:tomcat:9.0.0:milestone27:*:*:*:*:*:*
• cpe:2.3:a:apache:tomcat:9.0.0:milestone3:*:*:*:*:*:*
• cpe:2.3:a:apache:tomcat:9.0.0:milestone4:*:*:*:*:*:*
• cpe:2.3:a:apache:tomcat:9.0.0:milestone5:*:*:*:*:*:*
• cpe:2.3:a:apache:tomcat:9.0.0:milestone6:*:*:*:*:*:*
• cpe:2.3:a:apache:tomcat:9.0.0:milestone7:*:*:*:*:*:*
• cpe:2.3:a:apache:tomcat:9.0.0:milestone8:*:*:*:*:*:*
• cpe:2.3:a:apache:tomcat:9.0.0:milestone9:*:*:*:*:*:*

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