CVE-2026-112177: Ghostscript: reintroduction of .charkeys -dsafer bypass in rhel 8

Severity: high (CVSS 7.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-10-20 · updated 2026-10-20
Weakness: CWE-648

Description

A flaw was found in Ghostscript as shipped with Red Hat Enterprise Linux 8. The correction for CVE-2019-14869 was omitted during the rebase from version 9.25 to 9.27, leaving privileged .forceput operations in the .charkeys procedure insufficiently protected. Processing a specially crafted PostScript file may allow an attacker to bypass -dSAFER restrictions and access files outside the permitted paths or execute commands with the permissions of the Ghostscript process.

Affected products

Red Hat Enterprise Linux 8: all versions

References

https://access.redhat.com/security/cve/CVE-2026-112177
https://bugzilla.redhat.com/show_bug.cgi?id=2555564
https://github.com/ArtifexSoftware/ghostpdl/commit/485904772c5f0aa1140032746e5a0abfc40f4cef

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