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Vulnerability record · CVE-2022-48279 · published 20 January 2023

CVE-2022-48279: Owasp modsecurity interpretation conflict vulnerability

Owasp · Modsecurity

In ModSecurity before 2.9.6 and 3.x before 3.0.8, HTTP multipart requests were incorrectly parsed and could bypass the Web Application Firewall. NOTE: this is related to CVE-2022-39956 but can be considered independent changes to the ModSecurity (C language) codebase.

7.5 CVSS 3.1 High EPSS 1.2% · top 33.9% CWE-436 · Interpretation conflict
7.5CVSS 3.1 base score
1.2%EPSS exploitation probability, 30 days
NoNot in CISA KEV
3Affected product versions listed by NVD
18References
17 Jun 2026Last modified by NVD

Description

In ModSecurity before 2.9.6 and 3.x before 3.0.8, HTTP multipart requests were incorrectly parsed and could bypass the Web Application Firewall. NOTE: this is related to CVE-2022-39956 but can be considered independent changes to the ModSecurity (C language) codebase.

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

Affected products

3 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://coreruleset.org/20220919/crs-version-3-3-3-and-3-2-2-covering-several-cves/ Not Applicable
https://github.com/SpiderLabs/ModSecurity/pull/2795 PatchThird Party Advisory
https://github.com/SpiderLabs/ModSecurity/pull/2797 PatchThird Party Advisory
https://github.com/SpiderLabs/ModSecurity/releases/tag/v2.9.6 Release NotesThird Party Advisory
https://github.com/SpiderLabs/ModSecurity/releases/tag/v3.0.8 Release NotesThird Party Advisory
https://lists.debian.org/debian-lts-announce/2023/01/msg00023.html Mailing ListThird Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/52TGCZCOHYBDCVWJYNN2PS4
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SYRTXTOQQI6SB2TLI5QXU76
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WCH6JM4I4MD4YABYFHSBDDO
https://coreruleset.org/20220919/crs-version-3-3-3-and-3-2-2-covering-several-cves/ Not Applicable
https://github.com/SpiderLabs/ModSecurity/pull/2795 PatchThird Party Advisory
https://github.com/SpiderLabs/ModSecurity/pull/2797 PatchThird Party Advisory
https://github.com/SpiderLabs/ModSecurity/releases/tag/v2.9.6 Release NotesThird Party Advisory
https://github.com/SpiderLabs/ModSecurity/releases/tag/v3.0.8 Release NotesThird Party Advisory
https://lists.debian.org/debian-lts-announce/2023/01/msg00023.html Mailing ListThird Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/52TGCZCOHYBDCVWJYNN2PS4
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SYRTXTOQQI6SB2TLI5QXU76
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WCH6JM4I4MD4YABYFHSBDDO

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Source: NIST National Vulnerability Database (record CVE-2022-48279), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.