CVE-2024-2398 | HTTP/2 push headers memory-leak

Exp

When an application tells libcurl it wants to allow HTTP/2 server push, and the amount of received headers for the push surpasses the maximum allowed limit (1000), libcurl aborts the server push. When aborting, libcurl inadvertently does not free all the previously allocated headers and instead leaks the memory. Further, this error condition fails silently and is therefore not easily detected by an application.

Published: 2024-03-27 Last update: 2025-07-30 Assigner: 2499f714-1537-4658-8207-48ae4bb9eae9 Source: 2499f714-1537-4658-8207-48ae4bb9eae9
NVD Status：Analyzed，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2024-2398 is rated High Exploit Risk (79.1/100): CVSS High severity, with medium exploitation likelihood (EPSS 1.96%). 1 public exploit reference(s) are indexed (Exploit-DB). Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-2024-2398

EDB-ID Source Kind Published Link
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2024-2398

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-05-23 1.62% 1.96% +0.34%
2 2026-04-19 1.96% 1.62% -0.34%
3 2026-03-04 — 1.96% —

Full EPSS history (41 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2024-2398

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
8.6 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:L)
Attackers could change some data, but it’s limited—not everything goes.
Availability (A:L)
Might cause slowdowns, glitches, or partial disruption—not a full brick.
 3.9 4.7 134c704f-9b21-4f2e-91b3-4a467353bcc0

Weakness enumeration for CVE-2024-2398

OS Trackers for CVE-2024-2398

vendor priority summary link
alpine — CVE-2024-2398: 1 source package rows (curl); 207 state rows across 7 repos (3.17-main, 3.18-main, 3.19-main, 3.20-main, 3.21-main, 3.22-main, edge-main); fixed 7, open 200. https://security.alpinelinux.org/vuln/CVE-2024-2398
debian not yet assigned CVE-2024-2398 not yet assigned priority: Debian including 1 source packages (curl), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2024-2398
gentoo normal CVE-2024-2398: 1 GLSA(s) (202409-20), 1 atom(s) (net-misc/curl); latest impact normal. https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2024-2398
redhat medium — https://access.redhat.com/security/cve/CVE-2024-2398
suse medium CVE-2024-2398 severity moderate: SUSE including 334 source package names (1.2.3-2.2.132:libcurl4-8.0.1-150400.5.44.1, 1.2.3-3.2.153:libcurl4-8.0.1-150400.5.44.1, …), 794 product×package rows across 245 product lines (Container bci/golang, Container bci/nodejs, … (245 product lines)): Fixed 558, Known Affected 200, Known Not Affected 34, First Fixed 2. https://www.suse.com/security/cve/CVE-2024-2398/
ubuntu medium CVE-2024-2398 medium priority: Ubuntu including 1 source packages (curl), 11 status rows across 11 suites (bionic, focal, jammy, mantic, noble, oracular, plucky, questing, trusty, upstream, xenial): released 10, not-affected 1. https://ubuntu.com/security/CVE-2024-2398

Affected software / configurations for CVE-2024-2398

Vendor Product Version Raw CPE
haxx curl >= 7.44.0, < 8.7.0 cpe:2.3:a:haxx:curl:*:*:*:*:*:*:*:*
apple macos < 12.7.6 cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*
apple macos >= 13.0, < 13.6.8 cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*
apple macos >= 14.0, < 14.6 cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*
fedoraproject fedora 39 cpe:2.3:o:fedoraproject:fedora:39:*:*:*:*:*:*:*
fedoraproject fedora 40 cpe:2.3:o:fedoraproject:fedora:40:*:*:*:*:*:*:*
netapp active_iq_unified_manager — cpe:2.3:a:netapp:active_iq_unified_manager:-:*:*:*:*:vmware_vsphere:*:*
netapp ontap_select_deploy_administration_utility — cpe:2.3:a:netapp:ontap_select_deploy_administration_utility:-:*:*:*:*:*:*:*
netapp brocade_fabric_operating_system — cpe:2.3:o:netapp:brocade_fabric_operating_system:-:*:*:*:*:*:*:*
netapp bootstrap_os — cpe:2.3:o:netapp:bootstrap_os:-:*:*:*:*:*:*:*
netapp h300s_firmware — cpe:2.3:o:netapp:h300s_firmware:-:*:*:*:*:*:*:*
netapp h410s_firmware — cpe:2.3:o:netapp:h410s_firmware:-:*:*:*:*:*:*:*
netapp h500s_firmware — cpe:2.3:o:netapp:h500s_firmware:-:*:*:*:*:*:*:*
netapp h610c_firmware — cpe:2.3:o:netapp:h610c_firmware:-:*:*:*:*:*:*:*
netapp h610s_firmware — cpe:2.3:o:netapp:h610s_firmware:-:*:*:*:*:*:*:*
netapp h615c_firmware — cpe:2.3:o:netapp:h615c_firmware:-:*:*:*:*:*:*:*
netapp h700s_firmware — cpe:2.3:o:netapp:h700s_firmware:-:*:*:*:*:*:*:*

References for CVE-2024-2398

URL Tags
http://seclists.org/fulldisclosure/2024/Jul/18 Mailing List Third Party Advisory
http://seclists.org/fulldisclosure/2024/Jul/19 Mailing List Third Party Advisory
http://seclists.org/fulldisclosure/2024/Jul/20 Mailing List Third Party Advisory
http://www.openwall.com/lists/oss-security/2024/03/27/3 Mailing List Third Party Advisory
https://curl.se/docs/CVE-2024-2398.html Vendor Advisory
https://curl.se/docs/CVE-2024-2398.json Vendor Advisory
https://hackerone.com/reports/2402845 Exploit Issue Tracking Third Party Advisory
https://lists.fedoraproject.org/archives/list/[email protected]/message/2D44YLAUFJU6BZ4XFG2FYV7SBKXB5IZ6/ Third Party Advisory
https://lists.fedoraproject.org/archives/list/[email protected]/message/GMD6UYKCCRCYETWQZUJ65ZRFULT6SHLI/ Third Party Advisory
https://security.netapp.com/advisory/ntap-20240503-0009/ Third Party Advisory
https://support.apple.com/kb/HT214118 Release Notes Vendor Advisory
https://support.apple.com/kb/HT214119 Release Notes Vendor Advisory
https://support.apple.com/kb/HT214120 Release Notes Vendor Advisory
cvelogic Threat Intelligence