CVE-2020-1938

medium KEV

Published 2020-06-15 · Modified 2022-03-03

CVSS v3

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CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:H

CVSS v2

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VIR risk

7.0

Description

Apache Tomcat treats Apache JServ Protocol (AJP) connections as having higher trust than, for example, a similar HTTP connection. If such connections are available to an attacker, they can be exploited.

CISA KEV

Vendor: Apache
Product: Tomcat
Due date: 2022-03-17

Predictions

Exploit likelihood

99%

Patch ETA

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Heuristic predictions, AS-IS, for prioritization only.

Mitigations

vendor Authored 2026-05-27

Vendor advisory: cisa-kev — https://nvd.nist.gov/vuln/detail/CVE-2020-1938

vendor Authored 2026-05-27

Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2020-1938

vendor Authored 2026-05-27

Vendor advisory: rocky — https://errata.rockylinux.org/RLSA-2020:4847

vendor Authored 2026-05-27

Vendor advisory: suse — https://www.suse.com/security/cve/CVE-2020-1938.html

Exploits

OS impact

OS	Version	Status	Fixed in
sles		affected
rocky	8	fixed
debian	bookworm	fixed	`9.0.31-1`
debian	bullseye	fixed	`9.0.31-1`
debian	forky	fixed	`9.0.31-1`
debian	sid	fixed	`9.0.31-1`
debian	trixie	fixed	`9.0.31-1`

Package impact

Ecosystem	Package	Vulnerable	Fixed
Maven	org.apache.tomcat.embed:tomcat-embed-core	`>=9.0.0,<9.0.31`	`9.0.31`
Maven	org.apache.tomcat.embed:tomcat-embed-core	`>=8.0.0,<8.5.51`	`8.5.51`
Maven	org.apache.tomcat.embed:tomcat-embed-core	`>=7.0.0,<7.0.100`	`7.0.100`

References

Verify integrity in audit chain (admin only). AS-IS.