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Ghostscript -dSAFER sandbox bypass lets crafted files run commands

Priority LOW 35CWE-787Published · Updated

Key facts

Attack vector
Local
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Partial Red Hat: 4 fixed, 2 without a fix

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat. Impact type from CWE-787 and the CVSS impact.

Summary

Ghostscript packages in Red Hat Enterprise Linux 6, 7, 8, 9 and 10 are listed as affected. A flaw in document parsing combines an out-of-bounds write (CWE-787) with runtime disabling of internal path access controls. An attacker needs no privileges, but a user must render a crafted PostScript or EPS document, which lets the attacker bypass the -dSAFER sandbox and run shell commands. Successful exploitation can compromise the confidentiality, integrity and availability of data the Ghostscript process can access.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Description from the CNA

A flaw was found in Ghostscript. When Ghostscript renders a crafted PostScript or EPS document, it can bypass the -dSAFER sandbox and execute arbitrary shell commands in the context of the Ghostscript process. The issue chains memory corruption in document parsing with disabling of internal path access controls at runtime. An attacker can deliver the document directly or through formats that delegate rendering to Ghostscript (for example EPS import or print conversion workflows). Successful exploitation can compromise confidentiality, integrity, and availability of data accessible to the process running Ghostscript.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00179 7th percentileScored 2026-11-07
Fix Partial Red Hat: 3 advisoriesRed Hat: 4 fixed, 2 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
Red HatRed Hat Enterprise Linux 10—10.02.1-16.el10_2.3Patch availableCNA
Red HatRed Hat Enterprise Linux 8—9.27-19.el8_10Patch availableCNA
Red HatRed Hat Enterprise Linux 9—9.54.0-19.el9_8.3Patch availableCNA
Red HatRed Hat Enterprise Linux 6——No fix listedCNA
Red HatRed Hat Enterprise Linux 6——Not affectedCNA
Red HatRed Hat Enterprise Linux 7——No fix listedCNA
Red HatRed Hat Enterprise Linux 7——No fix listedCNA
Red HatRed Hat Enterprise Linux 7——Not affectedCNA
  • Red Hat Enterprise Linux 10 VendorRed Hat Affected — Fixed in 10.02.1-16.el10_2.3 Patch available CNA
  • Red Hat Enterprise Linux 8 VendorRed Hat Affected — Fixed in 9.27-19.el8_10 Patch available CNA
  • Red Hat Enterprise Linux 9 VendorRed Hat Affected — Fixed in 9.54.0-19.el9_8.3 Patch available CNA
  • Red Hat Enterprise Linux 6 VendorRed Hat Affected — Fixed in — No fix listed CNA
  • Red Hat Enterprise Linux 6 VendorRed Hat Affected — Fixed in — Not affected CNA
  • Red Hat Enterprise Linux 7 VendorRed Hat Affected — Fixed in — No fix listed CNA
  • Red Hat Enterprise Linux 7 VendorRed Hat Affected — Fixed in — No fix listed CNA
  • Red Hat Enterprise Linux 7 VendorRed Hat Affected — Fixed in — Not affected CNA

CPE names CNA · 7

CPEVersionsRoleVendor
cpe:/o:redhat:enterprise_linux:10.210.2—Red Hat
cpe:/a:redhat:enterprise_linux:8::appstream8—Red Hat
cpe:/a:redhat:enterprise_linux:8::crb8—Red Hat
cpe:/a:redhat:enterprise_linux:9::appstream9—Red Hat
cpe:/a:redhat:enterprise_linux:9::crb9—Red Hat
cpe:/o:redhat:rhel_els:66—Red Hat
cpe:/o:redhat:rhel_els:77—Red Hat
  • cpe:/o:redhat:enterprise_linux:10.2 Versions 10.2 — ·Red Hat
  • cpe:/a:redhat:enterprise_linux:8::appstream Versions 8 — ·Red Hat
  • cpe:/a:redhat:enterprise_linux:8::crb Versions 8 — ·Red Hat
  • cpe:/a:redhat:enterprise_linux:9::appstream Versions 9 — ·Red Hat
  • cpe:/a:redhat:enterprise_linux:9::crb Versions 9 — ·Red Hat
  • cpe:/o:redhat:rhel_els:6 Versions 6 — ·Red Hat
  • cpe:/o:redhat:rhel_els:7 Versions 7 — ·Red Hat

Remediation

Update Ghostscript to 9.27-19.el8_10 on Red Hat Enterprise Linux 8 (RHSA-2026:83552), 9.54.0-19.el9_8.3 on Red Hat Enterprise Linux 9 (RHSA-2026:83553) and 10.02.1-16.el10_2.3 on Red Hat Enterprise Linux 10 (RHSA-2026:83551). The sources list no fixed version for Red Hat Enterprise Linux 6 and 7, and Red Hat lists no available fix plan for them.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Red Hat 3 advisories

  • RHSA-2026:83553 Released 2026-10-15 · Red Hat rating Important
    ghostscript security update
    • Red Hat Enterprise Linux AppStream (v. 9) ghostscript-9.54.0-19.el9_8.3, libgs-9.54.0-19.el9_8.3
    • Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) ghostscript-9.54.0-19.el9_8.3
  • RHSA-2026:83551 Released 2026-10-15 · Red Hat rating Important
    ghostscript security update
    • Red Hat Enterprise Linux AppStream (v. 10) ghostscript-10.02.1-16.el10_2.3, libgs-10.02.1-16.el10_2.3
  • RHSA-2026:83552 Released 2026-10-15 · Red Hat rating Important
    ghostscript security update
    • Red Hat Enterprise Linux AppStream (v. 8) ghostscript-9.27-19.el8_10, libgs-9.27-19.el8_10

Vendor assessments

Red Hat

Red Hat rating: Important. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux 6AffectedNo fix yet
Red Hat Enterprise Linux 7AffectedNo fix yet
Red Hat Enterprise Linux AppStream (v. 10)Fixed RHSA-2026:83551
Red Hat Enterprise Linux AppStream (v. 8)Fixed RHSA-2026:83552
Red Hat Enterprise Linux AppStream (v. 9)Fixed RHSA-2026:83553
Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)Fixed RHSA-2026:83553
Not affected: 8 products
  • Red Hat Enterprise Linux 6
  • Red Hat Enterprise Linux 7
  • Red Hat Enterprise Linux AppStream (v. 10)
  • Red Hat Enterprise Linux AppStream (v. 8)
  • Red Hat Enterprise Linux AppStream (v. 9)
  • Red Hat Enterprise Linux CRB (v. 8)
  • Red Hat Enterprise Linux CodeReady Linux Builder (v. 10)
  • Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)

Timeline

  1. 2026-10-07 Threatist record created from CVE-2026-101258
  2. 2026-10-07 Alias added: GHSA-g96p-c3cq-wp28
  3. 2026-10-07 Affected versions changed · Red Hat
  4. 2026-10-07 CVSS score added · Red Hat
  5. 2026-10-07 CISA SSVC decision points changed
  6. 2026-10-07 Priority changed: MEDIUM → LOW
  7. 2026-10-16 Fix available: ghostscript@0:10.02.1-16.el10_2.3, ghostscript@0:9.27-19.el8_10, ghostscript@0:9.54.0-19.el9_8.3 · CNA
  8. 2026-10-16 3 new references · CNA
  9. 2026-10-16 Fix available: RHSA-2026:83551 · Red Hat
  10. 2026-10-16 Fix available: RHSA-2026:83552 · Red Hat
  11. 2026-10-16 Fix available: RHSA-2026:83553 · Red Hat
  12. 2026-10-16 Fix available: Red Hat Enterprise Linux AppStream (v. 10), Red Hat Enterprise Linux AppStream (v. 8), Red Hat Enterprise Linux AppStream (v. 9) +1 · Red Hat

References

  • TI-2019-15875 Protection mechanism failure in Jenkins Pipeline: Groovy Plugin KEVCVSS 3.1CRITICAL 9.9
  • TI-2019-15874 Protection mechanism failure in Jenkins Script Security Plugin KEVCVSS 3.1CRITICAL 9.9
  • TI-2019-08259 Underflow in PHP-FPM can lead to RCE KEVCVSS 3.1CRITICAL 9.8
  • TI-2019-05363 Code injection in Elastic Kibana KEVCVSS 3.1CRITICAL 10.0
  • TI-2019-03949 Out-of-bounds write in ESXi and Horizon DaaS KEVCVSS 3.1CRITICAL 9.8
  • TI-2018-16080 A code execution vulnerability exists in the Stapler web framework used by Jenkins 2.153… KEVCVSS 3.1CRITICAL 9.8
See all 7412 →

Sources