CVE-2022-42252

Apache Tomcat request smuggling via malformed content-length

At a glance

Severity: HIGH 7.5
EPSS: EPSS 1.57 % · percentile 75 (2026-10-27)
State: PUBLISHED
Published: 2022-11-01
Updated: 2025-05-06
Assigner: apache
NVD status: Modified

Description

If Apache Tomcat 8.5.0 to 8.5.82, 9.0.0-M1 to 9.0.67, 10.0.0-M1 to 10.0.26 or 10.1.0-M1 to 10.1.0 was configured to ignore invalid HTTP headers via setting rejectIllegalHeader to false (the default for 8.5.x only), Tomcat did not reject a request containing an invalid Content-Length header making a request smuggling attack possible if Tomcat was located behind a reverse proxy that also failed to reject the request with the invalid header.

Scores

Version	Score	Vector	Scored by
CVSS 3.1	HIGH 7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N	CISA-ADP
CVSS 3.1	HIGH 7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N	NVD · nvd@nist.gov (Primary)
CVSS 3.1	HIGH 7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N	NVD · 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary)

Weaknesses (CWE)

CWE-444

Advisories

GHSA-p22x-g9px-3945 — Apache Tomcat may reject request containing invalid Content-Length header

European references

ENISA EUVD · EUVD-2022-7390
GCVE · GCVE-0-2022-42252

CERT-FR advisories

CERTFR-2024-AVI-0958 — Multiples vulnérabilités dans les produits IBM · cert.ssi.gouv.fr
CERTFR-2024-AVI-0040 — Multiples vulnérabilités dans Atlassian Confluence et Jira · cert.ssi.gouv.fr
CERTFR-2023-AVI-0276 — Multiples vulnérabilités dans les produits IBM · cert.ssi.gouv.fr
CERTFR-2023-AVI-0034 — Multiples vulnérabilités dans les produits Oracle · cert.ssi.gouv.fr
CERTFR-2022-AVI-975 — Vulnérabilité dans Apache Tomcat · cert.ssi.gouv.fr

Affected configurations (NVD CPE)

cpe:2.3:a:apache:tomcat:*:*:*:*:*:*:*:* ≥ 8.5.0 < 8.5.83
cpe:2.3:a:apache:tomcat:*:*:*:*:*:*:*:* ≥ 9.0.0 < 9.0.68
cpe:2.3:a:apache:tomcat:*:*:*:*:*:*:*:* ≥ 10.0.0 < 10.0.27
cpe:2.3:a:apache:tomcat:*:*:*:*:*:*:*:* ≥ 10.1.0 < 10.1.1

Affected products

Product	Versions
Apache Software Foundation · Apache Tomcat	affected 10.1.0-M1 ≤ 10.1.0 ; affected 10.0.0-M1 ≤ 10.0.26 ; affected 9.0.0-M1 ≤ 9.0.67 ; affected 8.5.0 ≤ 8.5.82

References

Sources

Source	Licence
CVE List (CVEProject cvelistV5)	CVE Program Terms of Use
EPSS (FIRST.org)	FIRST — attribution requested
ENISA EUVD	ENISA — reproduction authorised, source acknowledged
CERT-FR (ANSSI)	Licence Ouverte / Etalab 2.0
NVD (NIST) via fkie-cad/nvd-json-data-feeds	Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD