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TI-2026-59960 Aliases CVE-2026-87874GHSA-9xm7-6q66-g534

Deserialization of untrusted data in Red Hat Ceph Storage 5

Priority LOW 38CWE-502Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
High
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Deferred Red Hat: fix deferred

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat. Impact type from CWE-502.

Summary

A flaw was found in the memcached cache plugin of the community.general Ansible collection. Although its documentation states that records are stored in JSON format, the plugin performs no explicit serialization and relies on python-memcached, which pickles values on write and unpickles them on read. Because memcached is unauthenticated and cache keys are predictable, an attacker able to reach a network-exposed or shared memcached instance can write a crafted pickle payload that is deserialized and executed on the Ansible controller when the poisoned fact cache is next read, leading to remote code execution.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00721 54th percentileScored 2026-11-07
Fix Deferred Red Hat: fix deferred

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 Ceph Storage 5——No fix listedCNA
Red HatRed Hat Ceph Storage 9——No fix listedCNA
Red HatRed Hat OpenStack Platform 17.1——No fix listedCNA
Red HatRed Hat OpenStack Platform 18.0——No fix listedCNA
  • Red Hat Ceph Storage 5 VendorRed Hat Affected — Fixed in — No fix listed CNA
  • Red Hat Ceph Storage 9 VendorRed Hat Affected — Fixed in — No fix listed CNA
  • Red Hat OpenStack Platform 17.1 VendorRed Hat Affected — Fixed in — No fix listed CNA
  • Red Hat OpenStack Platform 18.0 VendorRed Hat Affected — Fixed in — No fix listed CNA

CPE names CNA · 4

CPEVersionsRoleVendor
cpe:/a:redhat:ceph_storage:55—Red Hat
cpe:/a:redhat:ceph_storage:99—Red Hat
cpe:/a:redhat:openstack:17.117.1—Red Hat
cpe:/a:redhat:openstack:18.018.0—Red Hat
  • cpe:/a:redhat:ceph_storage:5 Versions 5 — ·Red Hat
  • cpe:/a:redhat:ceph_storage:9 Versions 9 — ·Red Hat
  • cpe:/a:redhat:openstack:17.1 Versions 17.1 — ·Red Hat
  • cpe:/a:redhat:openstack:18.0 Versions 18.0 — ·Red Hat

Remediation

No fixed version listed by the sources yet.

Vendor assessments

Red Hat

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

ProductStatusPlan or fix
Red Hat Ceph Storage 5AffectedNo fix yet: Fix deferred
Red Hat Ceph Storage 9AffectedNo fix yet: Fix deferred
Red Hat OpenStack Platform 17.1AffectedNo fix yet: Fix deferred
Red Hat OpenStack Platform 18.0AffectedNo fix yet: Fix deferred

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-87874
  2. 2026-10-03 Alias added: GHSA-9xm7-6q66-g534

References

Other 2

  • 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 7413 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences