synced 11 MIN AGO
01 Record

CVE-2026-34032

Apache HTTP Server: mod_proxy_ajp: Heap Buffer Over-Read Due to Missing Null-Termination Check (ajp_msg_get_string)

MediumPUBLISHEDCNA: apache
CNA base score5.3 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
View raw JSON

02 Description

Apache HTTP Server: mod_proxy_ajp: Heap Buffer Over-Read Due to Missing Null-Termination Check (ajp_msg_get_string)

03 Exploitation and scoring

Exploitation
Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
SSVC decision
  • ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
  • AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
  • Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.
CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.
EPSS probability
0.48% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 41.4% of scored records. A rank, not a probability.
NVD base score
5.3 (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:L/I:N/A:N
NVD analysis status
Analyzed. NVD last modified this record on 2026-10-26.
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
2026-05-04 12:54Z5 MO AGO
Last updated
2026-05-04 17:32Z5 MO AGO
Reserved
2026-03-25
Assigning CNA
apache
Record state
PUBLISHED
Severity
Medium (CVSS 5.3)
CNA CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Weaknesses
Data version
5.2
Document digest
38e3cc3894a058b54e85acfd98701dc526f8ef10ae4dbf4450a62c7598b56e47

05 Affected products

VendorProductVersionsPlatforms
Apache Software FoundationApache HTTP Server0 to 2.4.66—

06 References

07 Fixed in

AlmaLinux 8

  • httpd
    Fixed in 2.4.37-65.module_el8.10.0+4185+0955a0d7.8
  • httpd-devel
    Fixed in 2.4.37-65.module_el8.10.0+4185+0955a0d7.8
  • httpd-filesystem
    Fixed in 2.4.37-65.module_el8.10.0+4185+0955a0d7.8
  • httpd-manual
    Fixed in 2.4.37-65.module_el8.10.0+4185+0955a0d7.8
  • httpd-tools
    Fixed in 2.4.37-65.module_el8.10.0+4185+0955a0d7.8
  • mod_http2
    Fixed in 1.15.7-10.module_el8.10.0+4185+0955a0d7.5
  • mod_ldap
    Fixed in 2.4.37-65.module_el8.10.0+4185+0955a0d7.8
  • mod_md
    Fixed in 1:2.0.8-8.module_el8.10.0+4088+57f011c1.2
  • mod_proxy_html
    Fixed in 1:2.4.37-65.module_el8.10.0+4185+0955a0d7.8
  • mod_session
    Fixed in 2.4.37-65.module_el8.10.0+4185+0955a0d7.8
  • mod_ssl
    Fixed in 1:2.4.37-65.module_el8.10.0+4185+0955a0d7.8

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 2.4.62-13.el9_8.1
  • httpd-core
    Fixed in 2.4.62-13.el9_8.1
  • httpd-devel
    Fixed in 2.4.62-13.el9_8.1
  • httpd-filesystem
    Fixed in 2.4.62-13.el9_8.1
  • httpd-manual
    Fixed in 2.4.62-13.el9_8.1
  • httpd-tools
    Fixed in 2.4.62-13.el9_8.1
  • mod_ldap
    Fixed in 2.4.62-13.el9_8.1
  • mod_lua
    Fixed in 2.4.62-13.el9_8.1
  • mod_proxy_html
    Fixed in 1:2.4.62-13.el9_8.1
  • mod_session
    Fixed in 2.4.62-13.el9_8.1
  • mod_ssl
    Fixed in 1:2.4.62-13.el9_8.1

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

AlmaLinux 10

  • httpd
    Fixed in 2.4.63-13.el10_2.1
  • httpd-core
    Fixed in 2.4.63-13.el10_2.1
  • httpd-devel
    Fixed in 2.4.63-13.el10_2.1
  • httpd-filesystem
    Fixed in 2.4.63-13.el10_2.1
  • httpd-manual
    Fixed in 2.4.63-13.el10_2.1
  • httpd-tools
    Fixed in 2.4.63-13.el10_2.1
  • mod_ldap
    Fixed in 2.4.63-13.el10_2.1
  • mod_lua
    Fixed in 2.4.63-13.el10_2.1
  • mod_proxy_html
    Fixed in 1:2.4.63-13.el10_2.1
  • mod_session
    Fixed in 2.4.63-13.el10_2.1
  • mod_ssl
    Fixed in 1:2.4.63-13.el10_2.1

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

CloudLinux 8

  • httpd
    Fixed in 2.4.37-65.module_el8.10.0+4185+0955a0d7.8
  • httpd-devel
    Fixed in 2.4.37-65.module_el8.10.0+4185+0955a0d7.8
  • httpd-filesystem
    Fixed in 2.4.37-65.module_el8.10.0+4185+0955a0d7.8
  • httpd-manual
    Fixed in 2.4.37-65.module_el8.10.0+4185+0955a0d7.8
  • httpd-tools
    Fixed in 2.4.37-65.module_el8.10.0+4185+0955a0d7.8
  • mod_http2
    Fixed in 1.15.7-10.module_el8.10.0+4185+0955a0d7.5
  • mod_ldap
    Fixed in 2.4.37-65.module_el8.10.0+4185+0955a0d7.8
  • mod_md
    Fixed in 1:2.0.8-8.module_el8.10.0+4088+57f011c1.2
  • mod_proxy_html
    Fixed in 1:2.4.37-65.module_el8.10.0+4185+0955a0d7.8
  • mod_session
    Fixed in 2.4.37-65.module_el8.10.0+4185+0955a0d7.8
  • mod_ssl
    Fixed in 1:2.4.37-65.module_el8.10.0+4185+0955a0d7.8

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 2.4.62-13.el9_8.1
  • httpd-core
    Fixed in 2.4.62-13.el9_8.1
  • httpd-devel
    Fixed in 2.4.62-13.el9_8.1
  • httpd-filesystem
    Fixed in 2.4.62-13.el9_8.1
  • httpd-manual
    Fixed in 2.4.62-13.el9_8.1
  • httpd-tools
    Fixed in 2.4.62-13.el9_8.1
  • mod_ldap
    Fixed in 2.4.62-13.el9_8.1
  • mod_lua
    Fixed in 2.4.62-13.el9_8.1
  • mod_proxy_html
    Fixed in 1:2.4.62-13.el9_8.1
  • mod_session
    Fixed in 2.4.62-13.el9_8.1
  • mod_ssl
    Fixed in 1:2.4.62-13.el9_8.1

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.

CloudLinux 10

  • httpd
    Fixed in 2.4.63-13.el10_2.1
  • httpd-core
    Fixed in 2.4.63-13.el10_2.1
  • httpd-devel
    Fixed in 2.4.63-13.el10_2.1
  • httpd-filesystem
    Fixed in 2.4.63-13.el10_2.1
  • httpd-manual
    Fixed in 2.4.63-13.el10_2.1
  • httpd-tools
    Fixed in 2.4.63-13.el10_2.1
  • mod_ldap
    Fixed in 2.4.63-13.el10_2.1
  • mod_lua
    Fixed in 2.4.63-13.el10_2.1
  • mod_proxy_html
    Fixed in 1:2.4.63-13.el10_2.1
  • mod_session
    Fixed in 2.4.63-13.el10_2.1
  • mod_ssl
    Fixed in 1:2.4.63-13.el10_2.1

Derived from AlmaLinux 10. Partial coverage: only packages taken from AlmaLinux 10 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 2.4.67-1~deb12u2

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

Debian 13

  • apache2
    Fixed in 2.4.67-1~deb13u2

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

Debian 14

  • apache2
    Fixed in 2.4.67-1

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

Ubuntu 22.04 LTS

  • apache2
    Fixed in 2.4.52-1ubuntu4.20

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

Ubuntu 24.04 LTS

  • apache2
    Fixed in 2.4.58-1ubuntu8.12

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

Ubuntu 25.10

  • apache2
    Fixed in 2.4.64-1ubuntu3.4

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

Ubuntu 26.04 LTS

  • apache2
    Fixed in 2.4.66-2ubuntu2.1

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+esm14
    Available with Ubuntu Pro with Legacy support add-on: 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+esm19
    Available with Ubuntu Pro with Legacy support add-on: 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 18.04 LTS

  • apache2
    Fixed in 2.4.29-1ubuntu4.27+esm10
    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 20.04 LTS

  • apache2
    Fixed in 2.4.41-4ubuntu3.23+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.

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.