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Fencer Vulns
high 7.5

CVE-2022-48279 json

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 Fire…

published 2023-01-20 3 y ago modified 2026-09-08 2 mo ago also BIT-modsecurity-2022-48279 , BIT-modsecurity2-2022-48279 , EUVD-2022-50981

cvss
7.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
1.2%
EPSS 1.2% chance of exploitation in 30 days, percentile 68%
public exploits
0
none known

Summary

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.

Patch / fix

  • bitnami modsecurity 2.9.6
  • bitnami modsecurity2 2.9.6
  • owasp modsecurity 3.0.8
  • trustwave modsecurity 2.9.6
  • modsecurity Debian 14, Debian 13, Debian 12 3.0.8-1
  • modsecurity-apache Debian 14, Debian 13, Debian 12 2.9.6-1

debian advisories DEBIAN-CVE-2022-48279

  • modsecurity-apache Ubuntu 20.04 LTS 2.9.3-1ubuntu0.1
  • modsecurity-apache Ubuntu Pro 14.04 LTS 2.7.7-2ubuntu0.1~esm1
  • modsecurity-apache Ubuntu Pro 16.04 LTS 2.9.0-1ubuntu0.1~esm1
  • modsecurity-apache Ubuntu Pro 18.04 LTS 2.9.2-1ubuntu0.1~esm1
  • modsecurity-apache Ubuntu Pro 22.04 LTS 2.9.5-1ubuntu0.1~esm1

ubuntu advisories UBUNTU-CVE-2022-48279

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • jbcs-httpd24-apr jboss core services 1 1.7.0-8.el7jbcs
  • jbcs-httpd24-apr jboss core services 1 1.7.0-8.el8jbcs
  • jbcs-httpd24-curl jboss core services 1 8.2.1-1.el7jbcs
  • jbcs-httpd24-curl jboss core services 1 8.2.1-1.el8jbcs
  • jbcs-httpd24-httpd jboss core services 1 2.4.57-5.el7jbcs
  • jbcs-httpd24-httpd jboss core services 1 2.4.57-5.el8jbcs
  • jbcs-httpd24-libcurl jboss core services 1 8.2.1-1.el7jbcs
  • jbcs-httpd24-libcurl jboss core services 1 8.2.1-1.el8jbcs

red hat advisories RHSA-2023:4629

  • apache2-mod_security2 SLES for SAP 12 SP5, SLES for SAP 12 SP4, SLES 12 SP5 +4 more 2.8.0-7.6.1
  • apache2-mod_security2 SLES for SAP 15 SP3, SLES for SAP 15 SP2, SLES for SAP 15 SP1 +14 more 2.9.2-150000.3.6.1
  • apache2-mod_security2 SLE Module for Server Applications 15 SP4, openSUSE Leap 15.4 2.9.4-150400.3.3.1

suse advisories SUSE-SU-2023:0318-1SUSE-SU-2023:0317-1SUSE-SU-2023:0314-1

  • apache2-mod_security2 openSUSE Tumbleweed 2.9.8-2.1

opensuse advisories openSUSE-SU-2025:14703-1

  • mod_security Azure Linux 3.0 2.9.7-8

azure linux advisories AZL-45216

Azure Linux vulnerability data, Copyright (c) Microsoft Corporation, from https://github.com/microsoft/AzureLinuxVulnerabilityData via OSV, under the MIT licence; changed: normalised to fixed package versions per release. MIT

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2022-48279 updated cvss 7.5

mod_security: incorrect parsing of HTTP multipart requests leads to web application firewall bypass

  • Red Hat Enterprise Linux 7 mod_security, mod_security-mlogc
    affected: workaround, no fix planned “Out of support scope”
  • Red Hat Enterprise Linux 8 mod_security, mod_security-mlogc Red Hat Enterprise Linux 9 mod_security, mod_security-mlogc Red Hat Software Collections httpd24-mlogc, httpd24-mod_security
    affected: workaround, no fix planned “Will not fix”
  • Red Hat JBoss Core Services 2.4.57
    fixed: vendor fix RHSA-2023:4628
  • Red Hat JBoss Core Services on RHEL 7 Server jbcs-httpd24-mod_security 2.9.3-29.el7jbcs Red Hat JBoss Core Services on RHEL 8 jbcs-httpd24-mod_security 2.9.3-29.el8jbcs
    fixed: vendor fix RHSA-2023:4629
  • Red Hat JBoss Core Services on RHEL 7 Server jbcs-httpd24-apr 1.7.0-8.el7jbcs, jbcs-httpd24-curl 8.2.1-1.el7jbcs, jbcs-httpd24-httpd 2.4.57-5.el7jbcs, jbcs-httpd24-libcurl 8.2.1-1.el7jbcs, jbcs-httpd24-mod_md 2.4.0-25.el7jbcs, jbcs-httpd24-mod_ssl 2.4.57-5.el7jbcs, +18 more Red Hat JBoss Core Services on RHEL 8 jbcs-httpd24-apr 1.7.0-8.el8jbcs, jbcs-httpd24-curl 8.2.1-1.el8jbcs, jbcs-httpd24-httpd 2.4.57-5.el8jbcs, jbcs-httpd24-libcurl 8.2.1-1.el8jbcs, jbcs-httpd24-mod_md 2.4.0-25.el8jbcs, jbcs-httpd24-mod_ssl 2.4.57-5.el8jbcs, +18 more
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
yes
Technical impact
partial
Assessed
19 mo ago

Exploit prediction

1.22% chance of exploitation in the next 30 days, higher than 68% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CISA ADP 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
NVD 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CNA 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
OSV 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected packages

ecosystem package affected fixed in
bitnami modsecurity
<2.9.6
2.9.6
bitnami modsecurity2
<2.9.6
2.9.6

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.