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CVE-2026-48913 Apache CVE debrief

A Use After Free vulnerability was discovered in the Apache HTTP Server module mod_http2 (CVE-2026-48913). The vulnerability occurs when file handles are already exhausted. This issue affects Apache HTTP Server versions from 2.4.55 through 2.4.67, with a CVSS score of 7.3 and a severity rating of HIGH.

Vendor
Apache
Product
HTTP Server
CVSS
HIGH 7.3
CISA KEV
Not listed in stored evidence
Original CVE published
2026-06-08
Original CVE updated
2026-07-23
Advisory published
2026-06-08
Advisory updated
2026-07-23

Who should care

Users of Apache HTTP Server versions 2.4.55 through 2.4.67 should apply the necessary patches to mitigate this vulnerability.

Technical summary

The vulnerability is caused by a Use After Free issue in the mod_http2 module of Apache HTTP Server. This can happen when file handles are already exhausted. The Common Vulnerabilities and Exposures (CVE) score for this issue is 7.3, indicating a HIGH severity level.

Defensive priority

HIGH

Recommended defensive actions

  • Apply the patches provided by the Apache HTTP Server project to address this vulnerability.
  • Upgrade to Apache HTTP Server version 2.4.68 or later.

Evidence notes

The CVE-2026-48913 vulnerability was published on [cve-org](https://www.cve.org/CVERecord?id=CVE-2026-48913) and detailed information can be found on [nvd](https://nvd.nist.gov/vuln/detail/CVE-2026-48913).

Sources and references

Verified primary and authoritative sources

  • CVE-2026-48913 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-48913

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-48913 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-48913

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.