CVE-2023-36477

CRITICALNVD 9.09.0—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 9.0 under NVD CVSS v3. EPSS exploit probability: 0.9%, top 44% 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
9.0
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 1%CVSS: 9.0Exploit: NoneExposed: 0

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

XWiki Platform is a generic wiki platform offering runtime services for applications built on top of it. Any user with edit rights can edit all pages in the CKEditor' space. This makes it possible to perform a variety of harmful actions, such as removing technical documents, leading to loss of service and editing the javascript configuration of CKEditor, leading to persistent XSS. This issue has been patched in XWiki 14.10.6 and XWiki 15.1. This issue has been patched on the CKEditor Integration extension 1.64.9 for XWiki version older than 14.6RC1. Users are advised to upgrade. Users unable to upgrade may manually address the issue by restricting the edit and delete rights to a trusted user or group (e.g. the XWiki.XWikiAdminGroup group), implicitly disabling those rights for all other users. See commit 9d9d86179` for details.

CVSS v3
9.0
EG Score
9.0(medium)
EG Risk
41(Track)
EG Risk 41/100SSVC: 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
Severity90% × 45%
Exploitation1% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS
56.0%
KEV
Not listed

Published

June 30, 2023

Last Modified

November 21, 2024

References (8)

Affected Packages

(2 across 1 ecosystem)
Maven(2)
PackageVulnerable rangeFixed inDependents
org.xwiki.contrib:application-ckeditor-ui—1.64.9—
org.xwiki.platform:xwiki-platform-ckeditor-ui—15.1—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 14× in last 7d / 53× 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 110 total refreshes for this CVE.

  1. 2026-07-23 14:16 UTCEPSS rescore
  2. 2026-07-23 14:16 UTCEPSS rescore
  3. 2026-07-23 02:24 UTCEG score recompute
  4. 2026-07-22 23:11 UTCEG score recompute
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  1. 2026-07-11 08:26 UTCEPSS rescore
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  22. 2026-06-27 17:04 UTCOSV refresh
  23. 2026-06-27 03:07 UTCEPSS rescore
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  25. 2026-06-25 13:48 UTCEPSS rescore
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  45. 2026-06-15 17:47 UTCEPSS rescore
  46. 2026-06-14 23:16 UTCEPSS rescore
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  51. 2026-06-11 13:59 UTCEPSS rescore
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  53. 2026-06-10 22:17 UTCEPSS rescore
  54. 2026-06-10 13:21 UTCEPSS rescore
  55. 2026-06-10 03:47 UTCOSV refresh
  56. 2026-06-08 14:16 UTCEPSS rescore
  57. 2026-06-08 14:15 UTCEPSS rescore
  58. 2026-06-07 15:23 UTCEPSS rescore
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  74. 2026-05-31 00:15 UTCEPSS rescore
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Frequently asked(5)

What is CVE-2023-36477?
CVE-2023-36477 is a critical vulnerability published on June 30, 2023. XWiki Platform is a generic wiki platform offering runtime services for applications built on top of it. Any user with edit rights can edit all pages in the CKEditor' space. This makes it possible to perform a variety of harmful actions, such as removing technical documents, leading to loss of…
When was CVE-2023-36477 disclosed?
CVE-2023-36477 was first published in the National Vulnerability Database on June 30, 2023, 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-2023-36477 actively exploited?
CVE-2023-36477 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 56.0% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2023-36477?
CVE-2023-36477 has a CVSS v3 base score of 9.0 (NVD).
How do I remediate CVE-2023-36477?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-36477, 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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