synced 10 MIN AGO
01 Record

CVE-2022-26377

mod_proxy_ajp: Possible request smuggling

UnratedPUBLISHEDCNA: apache
CNA base scoreUnratedNo CNA CVSS vector
View raw JSON

02 Description

mod_proxy_ajp: Possible request smuggling

03 Exploitation and scoring

Exploitation
Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
SSVC decision
Not assessed by CISA
EPSS probability
21.07% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 97.3% of scored records. A rank, not a probability.
NVD base score
7.5 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
NVD analysis status
Analyzed. NVD last modified this record on 2026-06-17.
Red Hat severity
Moderate. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2022-06-08 10:00Z4 YR AGO
Last updated
2024-08-03 05:03Z2 YR AGO
Reserved
2022-03-03
Assigning CNA
apache
Record state
PUBLISHED
Severity
Not rated by the issuing CNA
CNA CVSS vector
Not published by the issuing CNA
Weaknesses
  • CWE-444Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')Base
Data version
5.1
Document digest
c4fc90880adb7963a76d5aed5b8db364739251a0b3dbe702470328202fe84ada

05 Affected products

VendorProductVersionsPlatforms
Apache Software FoundationApache HTTP ServerApache HTTP Server 2.4 to 2.4.53—

06 References

07 Fixed in

AlmaLinux 8

  • httpd
    Fixed in 2.4.37-51.module_el8.7.0+3281+01e58653
  • httpd-devel
    Fixed in 2.4.37-51.module_el8.7.0+3281+01e58653
  • httpd-filesystem
    Fixed in 2.4.37-51.module_el8.7.0+3281+01e58653
  • httpd-manual
    Fixed in 2.4.37-51.module_el8.7.0+3281+01e58653
  • httpd-tools
    Fixed in 2.4.37-51.module_el8.7.0+3281+01e58653
  • mod_http2
    Fixed

    A version is affected if any line below covers it.

    • Affected before 1.15.7-5.module_el8.6.0+2872+fe0ff7aa
    • Affected before 1.15.7-5.module_el8.6.0+3031+fb177b09
  • mod_ldap
    Fixed in 2.4.37-51.module_el8.7.0+3281+01e58653
  • mod_md
    Fixed

    A version is affected if any line below covers it.

    • Affected before 1:2.0.8-8.module_el8.6.0+2872+fe0ff7aa
    • Affected before 1:2.0.8-8.module_el8.6.0+3031+fb177b09
  • mod_proxy_html
    Fixed in 1:2.4.37-51.module_el8.7.0+3281+01e58653
  • mod_session
    Fixed in 2.4.37-51.module_el8.7.0+3281+01e58653
  • mod_ssl
    Fixed in 1:2.4.37-51.module_el8.7.0+3281+01e58653

Source: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.

AlmaLinux 9

  • httpd
    Fixed in 2.4.53-7.el9
  • httpd-core
    Fixed in 2.4.53-7.el9
  • httpd-devel
    Fixed in 2.4.53-7.el9
  • httpd-filesystem
    Fixed in 2.4.53-7.el9
  • httpd-manual
    Fixed in 2.4.53-7.el9
  • httpd-tools
    Fixed in 2.4.53-7.el9
  • mod_ldap
    Fixed in 2.4.53-7.el9
  • mod_lua
    Fixed in 2.4.53-7.el9
  • mod_proxy_html
    Fixed in 1:2.4.53-7.el9
  • mod_session
    Fixed in 2.4.53-7.el9
  • mod_ssl
    Fixed in 1:2.4.53-7.el9

Source: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.

Arch Linux

  • apache
    Fixed in 2.4.54-1

Source: Arch Linux Security Tracker, the Arch Linux security team. Reformatted by exploit.cc.

CloudLinux 8

  • httpd
    Fixed in 2.4.37-51.module_el8.7.0+3281+01e58653
  • httpd-devel
    Fixed in 2.4.37-51.module_el8.7.0+3281+01e58653
  • httpd-filesystem
    Fixed in 2.4.37-51.module_el8.7.0+3281+01e58653
  • httpd-manual
    Fixed in 2.4.37-51.module_el8.7.0+3281+01e58653
  • httpd-tools
    Fixed in 2.4.37-51.module_el8.7.0+3281+01e58653
  • mod_http2
    Fixed

    A version is affected if any line below covers it.

    • Affected before 1.15.7-5.module_el8.6.0+2872+fe0ff7aa
    • Affected before 1.15.7-5.module_el8.6.0+3031+fb177b09
  • mod_ldap
    Fixed in 2.4.37-51.module_el8.7.0+3281+01e58653
  • mod_md
    Fixed

    A version is affected if any line below covers it.

    • Affected before 1:2.0.8-8.module_el8.6.0+2872+fe0ff7aa
    • Affected before 1:2.0.8-8.module_el8.6.0+3031+fb177b09
  • mod_proxy_html
    Fixed in 1:2.4.37-51.module_el8.7.0+3281+01e58653
  • mod_session
    Fixed in 2.4.37-51.module_el8.7.0+3281+01e58653
  • mod_ssl
    Fixed in 1:2.4.37-51.module_el8.7.0+3281+01e58653

Derived from AlmaLinux 8. Partial coverage: only packages taken from AlmaLinux 8 are listed.

Source: CloudLinux errata, CloudLinux Inc. Derived from: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.

CloudLinux 9

  • httpd
    Fixed in 2.4.53-7.el9
  • httpd-core
    Fixed in 2.4.53-7.el9
  • httpd-devel
    Fixed in 2.4.53-7.el9
  • httpd-filesystem
    Fixed in 2.4.53-7.el9
  • httpd-manual
    Fixed in 2.4.53-7.el9
  • httpd-tools
    Fixed in 2.4.53-7.el9
  • mod_ldap
    Fixed in 2.4.53-7.el9
  • mod_lua
    Fixed in 2.4.53-7.el9
  • mod_proxy_html
    Fixed in 1:2.4.53-7.el9
  • mod_session
    Fixed in 2.4.53-7.el9
  • mod_ssl
    Fixed in 1:2.4.53-7.el9

Derived from AlmaLinux 9. Partial coverage: only packages taken from AlmaLinux 9 are listed.

Source: CloudLinux errata, CloudLinux Inc. Derived from: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.

Debian 12

  • apache2
    Fixed in 2.4.54-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 13

  • apache2
    Fixed in 2.4.54-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 14

  • apache2
    Fixed in 2.4.54-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 18.04 LTS

  • apache2
    Fixed in 2.4.29-1ubuntu4.24

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 20.04 LTS

  • apache2
    Fixed in 2.4.41-4ubuntu3.12

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 22.04 LTS

  • apache2
    Fixed in 2.4.52-1ubuntu4.1

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu Pro 14.04 LTS

  • apache2
    Fixed in 2.4.7-1ubuntu4.22+esm5
    Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu Pro 16.04 LTS

  • apache2
    Fixed in 2.4.18-2ubuntu3.17+esm6
    Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.