- Exploited
- No known exploitation
- Fix
- See vendor advisory
- Who is exposed
- Not reported
- Last modified
- Whether it needs action now or is a reference record, by fixed rules, with why. Last checked is when cve.now last re-read it.What do these mean? →
- Reference
- Last checked
- A 0-100 score for how much a CVE matters across the industry: exploitation, exposure, how widely the software is used, severity and whether a fix exists.What do these mean? →
- 23/100 · provisional
- The rating the maker of the software gives it. Shown when it differs from the CVSS level.What do these mean? →
- Low (apache)
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
Summary
A stack-based buffer overflow in the mod_vhost_alias module of Apache HTTP Server lets an attacker overwrite one byte of stack memory. The flaw affects Apache HTTP Server from the Apache Software Foundation.
Written by anthropic/claude-haiku-5.5 from the sources below. Verify against them.
Read the original description
Stack-based buffer overflow vulnerability in Apache HTTP Server's mod_vhost_alias (after CVE-2026-63292)
This issue affects Apache HTTP Server: 2.4.69.
cve.now Index
- Exploitation?/40Unknown. No CISA SSVC exploitation rating yet
- Exposure?/25Unknown. No advisory context yet
- Reach17/20Affects Apache HTTP Server (a widely deployed server, runtime, framework or database)
- Severity1/10Rated low by apache
- No patch5/5No fixed version listed; see vendor advisory
What would change the score
- Would score about 78 if added to CISA KEV
- Would score about 73 if CISA's SSVC rates exploitation active
- Would score about 45 if advisories confirm default setups are exposed
Check your systems with an agent
Paste this into a coding or ops agent. It checks your systems read-only and reports a table per asset.
Check whether my systems are affected by CVE-2026-109163 (Apache HTTP Server: mod_vhost_alias 1 byte stack buffer overwrite (after CVE-2026-63292)), using the cve.now data below.
Rules: work read-only. Do not run exploit code, proof-of-concept scripts or scanners that send attack payloads, and do not change any configuration, package, image or deployment. Report findings only.
What cve.now has for CVE-2026-109163 (entry last updated 2026-11-11):
Affected:
- Apache Software Foundation Apache HTTP Server: from 2.4.69, through 2.4.70
Fixed versions: none listed yet.
Setup: unknown whether the bug needs a non-default feature or setting. Check the advisory.
CISA KEV: CVE-2026-109163 is not listed as of cve.now's last read.
This KEV status is for CVE-2026-109163 only. If you also check another CVE, look up its own KEV status; never assume it from this one.
How to check:
- Installed software: check what is actually running, not what a repo declares. Read the version from each host, container image and Kubernetes node (the binary's version output, the OS package database, image layers), and check whether the conditions above hold there. Distribution packages may carry a backported fix under an older version number; confirm against the distribution's own advisory.
Verify against the linked advisories before concluding, and cite the date you read each one:
- https://httpd.apache.org/security/vulnerabilities_24.html
Do not conclude an asset is unaffected unless you checked it and the evidence covers both its version and the conditions above. If you could not check something, mark it unknown and say what is missing.
Report a table with one row per asset and these columns: Asset | Version or build | Status (affected, fixed, not applicable, unknown) | Compensating controls | Exposure (internet-facing, internal, none) | Evidence | Next action.
Entry: https://cve.now/CVE-2026-109163
For follow-up questions, use the cve.now MCP server at https://mcp.cve.now/mcp (no authentication), for example execute with name cve.get and arguments {"id": "CVE-2026-109163"}.Timeline
- CVE published
- First seen by cve.now
Affected versions
- Apache Software Foundation Apache HTTP Server
From 2.4.69 · through 2.4.70
Evidence 3
Vendor advisory · 1
Establishes: Affected and fixed versions.
- Advisory
CVE record · 2
Establishes: The identifier and description.
- Record
- Record
Corrections
None so far.
Something wrong on this page? Report an error. Every fix is listed here.
Questions about CVE-2026-109163
Is CVE-2026-109163 being exploited?
It is not in CISA's Known Exploited Vulnerabilities catalog, and CISA's SSVC assessment does not mark exploitation as active. That does not mean it has not been attacked: vendors and researchers can report attacks before CISA lists them. No public exploit code is tracked.Source: cve.now feed data
Which versions are affected by CVE-2026-109163?
Apache HTTP Server: from 2.4.69 through 2.4.70.Source: cve.now feed data