CVE-2026-87874

HIGHPre-NVD 8.18.1—
EchelonGraph scoreHIGH confidence

Score 8.1 from GitHub Security Advisory (severity: HIGH) published 2026-09-09. the CNA's CVSS baseline 8.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cna:redhat, epss, ghsa
Trending — 3 sources updated this week
8.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.1Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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.

CVSS v3
8.1
EG Score
8.1(high)
EG Risk
37(Track)
EG Risk 37/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity81% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
36%
KEV
Not listed

Published

September 9, 2026

Last Modified

September 10, 2026

Advisory Details (2)

Auto-updated Sep 9, 2026
Patch available. Sources: redhat.
redhat

2530995 – (CVE-2026-87874) CVE-2026-87874 community.general: community.general: memcached cache plugin deserializes untrusted pickle data from memcached, enabling cache-poisoning remote code execution on the Ansible controller

https://bugzilla.redhat.com/show_bug.cgi?id=2530995
redhat Patch Available

CVE-2026-87874 - Red Hat Customer Portal

Affected: Red Hat Enterprise Linux 8 or OpenShift Container Platform 4, is affected by this vulnerability and a fix may be released to a

https://access.redhat.com/security/cve/CVE-2026-87874

Vendor Advisories for CVE-2026-87874(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 25× in last 7d / 46× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-09-20 23:13 UTCEG score recompute
  2. 2026-09-20 23:13 UTCGHSA enrichment
  3. 2026-09-20 20:16 UTCEPSS rescore
  4. 2026-09-20 10:40 UTCGHSA enrichment
  5. 2026-09-19 22:08 UTCEG score recompute
  6. 2026-09-19 22:08 UTCGHSA enrichment
  7. 2026-09-19 09:45 UTCGHSA enrichment
  8. 2026-09-18 21:19 UTCEG score recompute
  9. 2026-09-18 21:19 UTCGHSA enrichment
  10. 2026-09-18 19:28 UTCEPSS rescore
  11. 2026-09-18 08:37 UTCGHSA enrichment
  12. 2026-09-17 20:14 UTCEG score recompute
  13. 2026-09-17 20:14 UTCGHSA enrichment
  14. 2026-09-17 19:32 UTCEPSS rescore
  15. 2026-09-17 06:44 UTCGHSA enrichment
  16. 2026-09-16 18:11 UTCEG score recompute
  17. 2026-09-16 18:11 UTCGHSA enrichment
  18. 2026-09-16 14:09 UTCEPSS rescore
  19. 2026-09-16 05:15 UTCEPSS rescore
  20. 2026-09-16 05:14 UTCGHSA enrichment
  21. 2026-09-15 16:52 UTCGHSA enrichment
  22. 2026-09-15 04:29 UTCEG score recompute
  23. 2026-09-15 04:29 UTCGHSA enrichment
  24. 2026-09-15 03:12 UTCEPSS rescore
  25. 2026-09-14 16:06 UTCGHSA enrichment
Show 21 more
  1. 2026-09-14 03:43 UTCEG score recompute
  2. 2026-09-14 03:43 UTCGHSA enrichment
  3. 2026-09-13 15:20 UTCGHSA enrichment
  4. 2026-09-13 02:57 UTCEG score recompute
  5. 2026-09-13 02:57 UTCGHSA enrichment
  6. 2026-09-12 14:34 UTCGHSA enrichment
  7. 2026-09-12 02:11 UTCEG score recompute
  8. 2026-09-12 02:11 UTCGHSA enrichment
  9. 2026-09-11 14:53 UTCEPSS rescore
  10. 2026-09-11 14:53 UTCEPSS rescore
  11. 2026-09-11 13:46 UTCEG score recompute
  12. 2026-09-11 13:46 UTCGHSA enrichment
  13. 2026-09-11 01:23 UTCGHSA enrichment
  14. 2026-09-10 13:00 UTCEG score recompute
  15. 2026-09-10 13:00 UTCGHSA enrichment
  16. 2026-09-10 09:00 UTCGHSA enrichment
  17. 2026-09-09 20:36 UTCEG score recompute
  18. 2026-09-09 20:35 UTCGHSA enrichment
  19. 2026-09-09 17:28 UTCEG score recompute
  20. 2026-09-09 16:28 UTCEG score recompute
  21. 2026-09-09 16:25 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-87874?
CVE-2026-87874 is a high vulnerability published on September 9, 2026. 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…
When was CVE-2026-87874 disclosed?
CVE-2026-87874 was first published in the National Vulnerability Database on September 9, 2026, with the most recent update on September 10, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-87874 actively exploited?
CVE-2026-87874 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 63.5% of all scored CVEs.
What is the CVSS score of CVE-2026-87874?
CVE-2026-87874 has a CVSS v4.0 base score of 8.1 (CNA self-assessment; NVD's own analysis pending).
How do I remediate CVE-2026-87874?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-87874, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2026-87874

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