CVE-2022-36066

CRITICALNVD 9.19.1—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 9.1 under NVD CVSS v3. EPSS exploit probability: 1.6%, top 27% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
9.1
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 2%CVSS: 9.1Exploit: NoneExposed: 0

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

Discourse is an open source discussion platform. In versions prior to 2.8.9 on the stable branch and prior to 2.9.0.beta10 on the beta and tests-passed branches, admins can upload a maliciously crafted Zip or Gzip Tar archive to write files at arbitrary locations and trigger remote code execution. The problem is patched in version 2.8.9 on the stable branch and version 2.9.0.beta10 on the beta and tests-passed branches. There are no known workarounds.

CVSS v3
9.1
EG Score
9.1(medium)
EG Risk
42(Track)
EG Risk 42/100SSVC: 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
Severity91% × 45%
Exploitation2% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS
72.9%
KEV
Not listed

Published

September 29, 2022

Last Modified

November 21, 2024

Advisory Details (3)

Auto-updated Jul 22, 2026
Patch available. Sources: github_commit, github_pr, github.
github Patch Available

Maliciously zipped file uploaded by admins can trigger an RCE · Advisory · discourse/discourse · GitHub

https://github.com/discourse/discourse/security/advisories/GHSA-grvh-qcpg-hfmv
github_pr Patch Available

SECURITY: Prevent arbitrary file write when decompressing files

Patch available: discourse/discourse _gh-attach-assets (PR #18421 merged 2022-09-29)

https://github.com/discourse/discourse/pull/18421
github_commit Patch Available

commit b27d5626d208 (discourse/discourse)

Patch available: discourse/discourse _gh-attach-assets (contains commit b27d5626d208)

https://github.com/discourse/discourse/commit/b27d5626d208a22c516a0adfda7554b67b493835

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 15× in last 7d / 50× 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.

Showing the most recent 100 of 106 total refreshes for this CVE.

  1. 2026-07-24 14:15 UTCEPSS rescore
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Frequently asked(5)

What is CVE-2022-36066?
CVE-2022-36066 is a critical vulnerability published on September 29, 2022. Discourse is an open source discussion platform. In versions prior to 2.8.9 on the stable branch and prior to 2.9.0.beta10 on the beta and tests-passed branches, admins can upload a maliciously crafted Zip or Gzip Tar archive to write files at arbitrary locations and trigger remote code execution.…
When was CVE-2022-36066 disclosed?
CVE-2022-36066 was first published in the National Vulnerability Database on September 29, 2022, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2022-36066 actively exploited?
CVE-2022-36066 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 72.9% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2022-36066?
CVE-2022-36066 has a CVSS v3 base score of 9.1 (NVD).
How do I remediate CVE-2022-36066?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2022-36066, 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.

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