CVE-2022-26377 in the critical feed json
mod_proxy_ajp: Possible request smuggling
published 2022-06-08 4 y ago modified 2026-09-08 2 mo ago also BIT-apache-2022-26377 , EUVD-2022-30936
- cvss
- 7.5
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 21.1%
- EPSS 21.1% chance of exploitation in 30 days, percentile 97%
- public exploits
- 0
- none known
Summary
Inconsistent Interpretation of HTTP Requests ('HTTP Request Smuggling') vulnerability in mod_proxy_ajp of Apache HTTP Server allows an attacker to smuggle requests to the AJP server it forwards requests to. This issue affects Apache HTTP Server Apache HTTP Server 2.4 version 2.4.53 and prior versions.
Patch / fix
- bitnami apache 2.4.54
- apache http_server 2.4.54
- apache2 Debian 14, Debian 13, Debian 12 2.4.54-1
debian advisories DEBIAN-CVE-2022-26377
- apache2 Ubuntu 18.04 LTS 2.4.29-1ubuntu4.24
- apache2 Ubuntu 20.04 LTS 2.4.41-4ubuntu3.12
- apache2 Ubuntu 22.04 LTS 2.4.52-1ubuntu4.1
- apache2 Ubuntu Pro 14.04 LTS 2.4.7-1ubuntu4.22+esm5
- apache2 Ubuntu Pro 16.04 LTS 2.4.18-2ubuntu3.17+esm6
ubuntu advisories UBUNTU-CVE-2022-26377
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-curl jboss core services 1 7.86.0-2.el7jbcs
- jbcs-httpd24-curl jboss core services 1 7.86.0-2.el8jbcs
- jbcs-httpd24-httpd jboss core services 1 2.4.51-37.el7jbcs
- jbcs-httpd24-httpd jboss core services 1 2.4.51-37.el8jbcs
- jbcs-httpd24-libcurl jboss core services 1 7.86.0-2.el7jbcs
- jbcs-httpd24-libcurl jboss core services 1 7.86.0-2.el8jbcs
- jbcs-httpd24-mod_ssl jboss core services 1 1:2.4.51-37.el7jbcs
- jbcs-httpd24-mod_ssl jboss core services 1 1:2.4.51-37.el8jbcs
red hat advisories RHSA-2022:8840RHSA-2022:7647RHSA-2022:8067RHSA-2022:6753
- apache2 SLES for SAP 15 SP5, SLES for SAP 15 SP4, SLES 15 SP5-LTSS +5 more 2.4.66-150400.6.57.1
- apache2 SLES for SAP 15 SP2, SLES 15 SP2-LTSS, SLES 15 SP2-BCL +10 more 2.4.51-150200.3.48.1
- apache2 SLES for SAP 15 SP1, SLES for SAP 15, SLES 15-LTSS +7 more 2.4.33-150000.3.69.1
- apache2 SLE Module for Server Applications 15 SP4, SLE Module for Package Hub 15 SP4, SLE Module for Basesystem 15 SP4 +1 more 2.4.51-150400.6.3.1
- apache2 SLES for SAP 12 SP5, SLES 12 SP5, SLE Software Development Kit 12 SP5 2.4.51-35.19.1
- apache2 SLES for SAP 12 SP4, SLES for SAP 12 SP3, SLES 12 SP4-LTSS +8 more 2.4.23-29.91.1
suse advisories SUSE-SU-2026:2686-1SUSE-SU-2022:2342-1SUSE-SU-2022:2338-1SUSE-SU-2022:2302-1SUSE-SU-2022:2101-1SUSE-SU-2022:2099-1
- apache2 openSUSE Tumbleweed 2.4.54-1.1
opensuse advisories openSUSE-SU-2024:12142-1
- httpd AlmaLinux 9 2.4.53-7.el9
- mod_lua AlmaLinux 9 2.4.53-7.el9
- mod_ssl AlmaLinux 9 1:2.4.53-7.el9
- mod_ldap AlmaLinux 9 2.4.53-7.el9
- httpd-core AlmaLinux 9 2.4.53-7.el9
- httpd-tools AlmaLinux 9 2.4.53-7.el9
- mod_session AlmaLinux 9 2.4.53-7.el9
- httpd-manual AlmaLinux 9 2.4.53-7.el9
almalinux advisories ALSA-2022:8067ALSA-2022:7647
- httpd Rocky Linux 9 2.4.53-7.el9
- httpd Rocky Linux 8 2.4.37-51.module+el8.7.0+1059+126e9251
- mod_md Rocky Linux 8 1:2.0.8-8.module+el8.5.0+695+1fa8055e
- mod_md Rocky Linux 8 1:2.0.8-8.module+el8.4.0+553+7a69454b
- mod_http2 Rocky Linux 8 1.15.7-5.module+el8.6.0+823+f143cee1
rocky linux advisories RLSA-2022:8067RLSA-2022:7647
- apache2 Alpine 3.24, Alpine 3.23, Alpine 3.22 +9 more 2.4.54-r0
alpine advisories ALPINE-CVE-2022-26377
Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0
- apache Arch Linux 2.4.54-1
arch linux advisories AVG-2763
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-2022-26377 updated cvss 6.5
httpd: mod_proxy_ajp: Possible request smuggling
-
Red Hat Enterprise Linux 6 httpd, mod_ssl, httpd-tools, httpd-manual Red Hat Enterprise Linux 7 httpd, mod_ssl, mod_ldap, httpd-tools, mod_session, httpd-manual, +1 more Red Hat JBoss Enterprise Application Platform 6 httpd22 httpd22 Red Hat JBoss Web Server 3 httpd24 httpd24affected: workaround, no fix planned “Disabling mod_proxy_ajp and restarting httpd will mitigate this flaw.”
-
Red Hat Enterprise Linux AppStream (v. 8) mod_md 2.0.8-8.module+el8.3.0+6814+67d1e611, httpd 2.4.37-51.module+el8.7.0+16050+02173b8e, mod_ssl 2.4.37-51.module+el8.7.0+16050+02173b8e, mod_http2 1.15.7-5.module+el8.6.0+13996+01710940, mod_ldap 2.4.37-51.module+el8.7.0+16050+02173b8e, httpd-tools 2.4.37-51.module+el8.7.0+16050+02173b8e, +4 morefixed: vendor fix “Disabling mod_proxy_ajp and restarting httpd will mitigate this flaw.” RHSA-2022:7647
-
Red Hat Enterprise Linux AppStream (v. 9) httpd 2.4.53-7.el9, mod_lua 2.4.53-7.el9, mod_ssl 2.4.53-7.el9, mod_ldap 2.4.53-7.el9, httpd-core 2.4.53-7.el9, httpd-tools 2.4.53-7.el9, +4 morefixed: vendor fix “Disabling mod_proxy_ajp and restarting httpd will mitigate this flaw.” RHSA-2022:8067
-
Red Hat JBoss Core Servicesfixed: vendor fix “Disabling mod_proxy_ajp and restarting httpd will mitigate this flaw.” RHSA-2022:8841
-
Red Hat JBoss Core Services on RHEL 7 Server jbcs-httpd24-httpd 2.4.51-37.el7jbcs, jbcs-httpd24-mod_ssl 2.4.51-37.el7jbcs, jbcs-httpd24-mod_ldap 2.4.51-37.el7jbcs, jbcs-httpd24-httpd-tools 2.4.51-37.el7jbcs, jbcs-httpd24-mod_session 2.4.51-37.el7jbcs, jbcs-httpd24-httpd-manual 2.4.51-37.el7jbcs, +2 more Red Hat JBoss Core Services on RHEL 8 jbcs-httpd24-httpd 2.4.51-37.el8jbcs, jbcs-httpd24-mod_ssl 2.4.51-37.el8jbcs, jbcs-httpd24-mod_ldap 2.4.51-37.el8jbcs, jbcs-httpd24-httpd-tools 2.4.51-37.el8jbcs, jbcs-httpd24-mod_session 2.4.51-37.el8jbcs, jbcs-httpd24-httpd-manual 2.4.51-37.el8jbcs, +2 morefixed: vendor fix “Disabling mod_proxy_ajp and restarting httpd will mitigate this flaw.” RHSA-2022:8840
-
Red Hat Software Collections for RHEL Workstation(v. 7) httpd24-httpd 2.4.34-23.el7.5, httpd24-mod_ssl 2.4.34-23.el7.5, httpd24-mod_ldap 2.4.34-23.el7.5, httpd24-httpd-tools 2.4.34-23.el7.5, httpd24-mod_session 2.4.34-23.el7.5, httpd24-httpd-manual 2.4.34-23.el7.5, +1 more Red Hat Software Collections for RHEL(v. 7) httpd24-httpd 2.4.34-23.el7.5, httpd24-mod_ssl 2.4.34-23.el7.5, httpd24-mod_ldap 2.4.34-23.el7.5, httpd24-httpd-tools 2.4.34-23.el7.5, httpd24-mod_session 2.4.34-23.el7.5, httpd24-httpd-manual 2.4.34-23.el7.5, +1 morefixed: vendor fix “Disabling mod_proxy_ajp and restarting httpd will mitigate this flaw.” RHSA-2022:6753
-
Red Hat JBoss Core Services on RHEL 7 Server jbcs-httpd24-curl 7.86.0-2.el7jbcs, jbcs-httpd24-mod_md 2.4.0-18.el7jbcs, jbcs-httpd24-libcurl 7.86.0-2.el7jbcs, jbcs-httpd24-apr-util 1.6.1-99.el7jbcs, jbcs-httpd24-nghttp2 1.43.0-11.el7jbcs, jbcs-httpd24-openssl 1.1.1k-13.el7jbcs, +16 more Red Hat JBoss Core Services on RHEL 8 jbcs-httpd24-curl 7.86.0-2.el8jbcs, jbcs-httpd24-mod_md 2.4.0-18.el8jbcs, jbcs-httpd24-libcurl 7.86.0-2.el8jbcs, jbcs-httpd24-apr-util 1.6.1-99.el8jbcs, jbcs-httpd24-nghttp2 1.43.0-11.el8jbcs, jbcs-httpd24-openssl 1.1.1k-13.el8jbcs, +16 morenot 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 ICSA-25-133-01 updated cvss 7.5
Hitachi Energy Service Suite
-
Hitachi Energy Service Suite <=9.8.1.3affected: fixed in 9.8.1.4
-
Hitachi Energy Service Suite 9.8.1.4fixed
Facts from CISA's republication of the vendor's own advisory (CSAF); the linked advisory is the authoritative source. CISA notification · csaf
Exploit prediction
21.08% chance of exploitation in the next 30 days, higher than 97% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N |
| NVD | 2.0 | 5.0 | AV:N/AC:L/Au:N/C:N/I:P/A:N |
| OSV | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| bitnami | apache | <2.4.54 |
2.4.54 |
Affected products
- Apache Software Foundation Apache HTTP Server
Classification
- Weakness
-
- CWE-444 Inconsistent Interpretation of HTTP Requests
- Technology feeds
References
-
lists.fedoraproject.org
/archives/list/package-announce%40lists.fedoraproject.org/message/YPY2BLEVJWFH34AX77ZJPLD2OOBYR6ND/
vendor-advisory, third-party-advisory, advisory
-
lists.fedoraproject.org
/archives/list/package-announce%40lists.fedoraproject.org/message/7QUGG2QZWHTITMABFLVXA4DNYUOTPWYQ/
vendor-advisory, third-party-advisory, advisory
-
security.gentoo.org
/glsa/202208-20
vendor-advisory, third-party-advisory, advisory
-
httpd.apache.org
/security/vulnerabilities_24.html
vendor-advisory, advisory
-
openwall.com
/lists/oss-security/2022/06/08/2
mailing-list, third-party-advisory, advisory
-
security.netapp.com
/advisory/ntap-20220624-0005/
third-party-advisory, advisory
-
nvd.nist.gov
/vuln/detail/CVE-2022-26377
web
Sources
- CVE List CVE-2022-26377
- NVD CVE-2022-26377
- OSV BIT-apache-2022-26377
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.
CPEs and fixed versions use Anchore's correction of NVD's data: Improve version ranges to indicate fix.