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HIGH

CVE-2024-2398

CVSS v3

8.6

HIGH

EPSS Score

36.1 %

exploit probability, as of 2026-10-19

CISA KEV

No

known exploited

Exploitation

—

SSVC status

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Affected and fixed versions

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • libcurlAlmaLinux:9all versions · fixed in 7.76.1-29.el9_4.1and 4 other packages
  • libcurlAlmaLinux:8all versions · fixed in 7.61.1-34.el8_10.2and 3 other packages

Vendor advisories

  • CVE-2024-2398 Red Hat Product Security342 products fixed · 12 known affected

    curl: HTTP/2 push headers memory-leak

    curl as a component of Red Hat Enterprise Linux 6 · curl.src as a component of Red Hat Enterprise Linux 6 · libcurl as a component of Red Hat Enterprise Linux 6

  • RHSA-2024:11109 Red Hat Product Security30 products fixed

    Red Hat Security Advisory: Updated service-interconnect rhel9 container images for 1.5

  • RHSA-2024:10135 Red Hat Product Security6 products fixed

    Red Hat Security Advisory: Updated service-interconnect rhel9 container images for 1.4 LTS

  • ICSA-24-319-04 CISA1 known affected

    Siemens SINEC NMS

    SINEC NMS

  • SSA-331112 Siemens ProductCERT1 known affected

    SSA-331112: Multiple Vulnerabilities in SINEC NMS Before V3.0 SP1

    SINEC NMS

  • ICSA-24-319-16 CISA

    Hitachi Energy MSM (Update A)

11 more advisories

Full record on NVD

Description

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.

Technical details

Published
2024-03-27

Frequently asked questions

What is CVE-2024-2398?

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.

Is CVE-2024-2398 actively exploited?

Active exploitation of CVE-2024-2398 has not been confirmed. Its EPSS score was 36.1% on 2026-10-19, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2024-2398?

CVE-2024-2398 has a CVSS v3 base score of 8.6 (HIGH severity).

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