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Findings

CVE-2026-56153

Out-of-bounds Write vulnerability in Apache HTTP Server's mod_charset_lite.

Published Oct 1, 2026 · corrected/updated Oct 16, 2026 · Apache · evidence confidence high

Out-of-bounds Write vulnerability in Apache HTTP Server's mod_charset_lite. This issue affects Apache HTTP Server: from 2.4.0 through 2.4.68.

Grounded briefings

Catalog interpretations for three audiences. Each brief cites ingested metadata and the original advisories below. They are not independent research and they do not invent exploit steps.

Executive

CVE-2026-56153 is a high public vulnerability record for Apache. It is not currently listed in the CISA Known Exploited catalog. Check the linked vendor or CERT advisories for patch status. This summary is a catalog interpretation of the ingested metadata and cites the original advisories below.

System administrator

Identify whether Apache is in your estate, then compare installed versions with the affected ranges. Affected packages or ranges on record: apache2 (2.4.57-2, 2.4.57-3, 2.4.58-1); apache2 (0 → 2.4.69-1~deb13u1); apache2 (0 → 2.4.69-1). Check the linked vendor or CERT advisories for patch status. Prefer the vendor or distribution advisory linked in Sources before changing production systems. This is a catalog interpretation, not a runbook.

Security analyst

Signals on file: CVSS 7.5. It is not currently listed in the CISA Known Exploited catalog. Sources contributing to this record: apache, cve_org, trivy. Public exploit references, when present, are outbound links only and are not proof of active exploitation. This is a catalog interpretation of stored metadata.

Exploitation and remediation

  • Exploitation evidence

    Not listed as known exploited in CISA KEV. Not in CISA KEV or VulnCheck KEV.

  • Patch and remediation

    No required-action text is stored yet. Use the vendor or CERT links in Sources for patch availability.

  • Safe detection guidance

    Compare installed versions with the affected ranges below and verify the advisory from the original publisher. This site stores metadata and outbound links only; it does not ship exploit code or proof-of-concept payloads.

Technology hubs

Debian

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Oct 15, 2026 · Apache Software Foundation

    Detected

    Named on the public Apache Software Foundation page.

  2. Oct 16, 2026 · Trivy Vulnerability DB

    Fix available

    apache2 fixed in 2.4.69-1~deb13u1; apache2 fixed in 2.4.69-1

  3. Oct 16, 2026 · Trivy Vulnerability DB

    Fix available

    apache2 fixed in 2.4.69-1~deb13u1

  4. Oct 16, 2026 · Trivy Vulnerability DB

    Fix available

    apache2 fixed in 2.4.69-1

  5. Oct 16, 2026 · Trivy Vulnerability DB

    Updated

    Out-of-bounds Write vulnerability in Apache HTTP Server's mod_charset_lite. This issue affects Apache HTTP Server: from 2.4.0 through 2.4.68.

Affected

  • Debian:12 apache22.4.57-2, 2.4.57-3, 2.4.58-1
  • Debian:13 apache20 → 2.4.69-1~deb13u1
  • Debian:14 apache20 → 2.4.69-1

Sources

References