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No exploitation reportedFix available

CVE-2026-48913

No exploitation reported by the sources we read.

  • Published2026-06-08
  • Fixed in2.4.68
  • WeaknessCWE-416

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

Use After Free vulnerability in Apache HTTP Server module mod_http2 when file handles are already exhausted. This issue affects Apache HTTP Server: from 2.4.55 through 2.4.67.

Timeline

dates in UTC
  1. 2026-06-0816:16CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 18:48 UTC
Indicators tagged with this CVE, per day0 indicators over 7 days
Block these indicators
  • Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2026-48913?format=txt
  • CSV export: https://api.ismalicious.com/edl/cve/CVE-2026-48913?format=csv
  • TAXII collection of exploited CVEs
  • The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD · OSV
Apache HTTP Server
BranchAffectedFixed in
2.4≥ 2.4.55, < 2.4.682.4.68

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Distribution builds and vendor advisories

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

  • mod_http2AlmaLinux:10all versions · fixed in 2.0.29-4.el10_2.2
  • mod_http2AlmaLinux:9all versions · fixed in 2.0.26-6.el9_8.2

Vendor advisories

  • CVE-2026-48913 Red Hat Product Security74 products fixed · 40 known affected

    httpd: mod_http2: Apache HTTP Server mod_http2: Use After Free vulnerability allows arbitrary code execution or denial of service.

    httpd as a component of Red Hat Enterprise Linux 10 · httpd-core as a component of Red Hat Enterprise Linux 10 · httpd-devel as a component of Red Hat Enterprise Linux 10 · +37 more

  • RHSA-2026:59387 Red Hat Product Security13 products fixed

    Red Hat Security Advisory: mod_http2 security, bug fix, and enhancement update

  • RHSA-2026:56868 Red Hat Product Security19 products fixed

    Red Hat Security Advisory: Red Hat JBoss Core Services Apache HTTP Server 2.4.62 SP5 security update

  • RHSA-2026:56869 Red Hat Product Security1 product fixed

    Red Hat Security Advisory: Red Hat JBoss Core Services Apache HTTP Server 2.4.62 SP5 security update

  • RHSA-2026:55992 Red Hat Product Security5 products fixed

    Red Hat Security Advisory: mod_http2 security update

  • RHSA-2026:50572 Red Hat Product Security5 products fixed

    Red Hat Security Advisory: mod_http2 security update

3 more advisories

Full record on NVD

Fix

  1. Update Apache HTTP Server to 2.4.68
  2. Vendor fix Red Hat Product Security RHSA-2026:59387 · 13 productsFor details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
  3. Vendor fix Red Hat Product Security RHSA-2026:56868 · 19 productsBefore applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258
  4. Vendor fix Red Hat Product Security RHSA-2026:25042 · 13 productsFor details on how to apply this update, which includes the changes described in this advisory, refer to: https://images.redhat.com/
  5. Workaround from the vendor Red Hat Product Security RHSA-2026:59387 · 13 productsTo mitigate this issue, disable the `mod_http2` module if HTTP/2 protocol support is not required. This can be achieved by commenting out or removing the `LoadModule http2_module modules/mod_http2.so` line in the Apache HTTP Server configuration file (e.g., `/etc/httpd/conf.modules.d/00-base.conf` …
  6. No fix planned, says the vendor Red Hat Product Security CVE-2026-48913 · 15 productsOut of support scope

Advisories and patches

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof-of-concept repositories
none listed
PoC-in-GitHub

Sources

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
Published
2026-06-08
Last Modified
2026-07-23
NVD status
Analyzed
MSRC Title
Apache HTTP Server: mod_http2 memory corruption when file handles exhausted

Frequently asked questions

What is CVE-2026-48913?

Use After Free vulnerability in Apache HTTP Server module mod_http2 when file handles are already exhausted. This issue affects Apache HTTP Server: from 2.4.55 through 2.4.67.

Is CVE-2026-48913 actively exploited?

Active exploitation of CVE-2026-48913 has not been confirmed. Its EPSS score was 1.1% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2026-48913?

CVE-2026-48913 has a CVSS v3 base score of 7.3 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L.

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