CVE-2023-30537

CRITICALNVD 9.99.9—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 9.9 under NVD CVSS v3. EPSS exploit probability: 1.0%, top 40% 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
Elevated
9.9
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 1%CVSS: 9.9Exploit: 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 the right to add an object on a page can execute arbitrary Groovy, Python or Velocity code in XWiki leading to full access to the XWiki installation. The root cause is improper escaping of the styles properties FlamingoThemesCode.WebHome. This page is installed by default. The vulnerability has been patched in XWiki versions 13.10.11, 14.4.7 and 14.10.

CVSS v3
9.9
EG Score
9.9(medium)
EG Risk
—
EPSS
60.3%
KEV
Not listed

Published

April 16, 2023

Last Modified

November 21, 2024

Advisory Details (3)

Auto-updated Jul 21, 2026
Patch available. Sources: github_commit, github.
generic

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https://jira.xwiki.org/browse/XWIKI-20280
github Patch Available

Privilege escalation (PR) from account through FlamingoThemesCode.WebHomeSheet · Advisory · xwiki/xwiki-platform · GitHub

https://github.com/xwiki/xwiki-platform/security/advisories/GHSA-vrr8-fp7c-7qgp
github_commit Patch Available

commit df596f153683 (xwiki/xwiki-platform)

Patch available: xwiki/xwiki-platform xwiki-platform-16.10.16 (contains commit df596f153683)

https://github.com/xwiki/xwiki-platform/commit/df596f15368342236f8899ca122af8f3df0fe2e8

Affected Packages

(1 across 1 ecosystem)
Maven(1)
PackageVulnerable rangeFixed inDependents
org.xwiki.platform:xwiki-platform-flamingo-theme-ui—14.10—

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 13× in last 7d / 49× 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 102 total refreshes for this CVE.

  1. 2026-07-22 23:09 UTCEG score recompute
  2. 2026-07-22 14:06 UTCEPSS rescore
  3. 2026-07-22 14:06 UTCEPSS rescore
  4. 2026-07-21 15:23 UTCEPSS rescore
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  14. 2026-07-15 22:53 UTCOSV refresh
  15. 2026-07-15 16:56 UTCEPSS rescore
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  1. 2026-07-09 19:08 UTCEPSS rescore
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  17. 2026-06-27 23:34 UTCOSV refresh
  18. 2026-06-27 03:07 UTCEPSS rescore
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  43. 2026-06-12 23:10 UTCEPSS rescore
  44. 2026-06-11 13:59 UTCEPSS rescore
  45. 2026-06-10 22:17 UTCEPSS rescore
  46. 2026-06-10 13:21 UTCEPSS rescore
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  48. 2026-06-10 10:17 UTCOSV refresh
  49. 2026-06-08 14:15 UTCEPSS rescore
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  51. 2026-06-07 15:23 UTCEPSS rescore
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  73. 2026-05-27 13:39 UTCEPSS rescore
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  75. 2026-05-26 13:43 UTCEPSS rescore

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2023-30537?
CVE-2023-30537 is a critical vulnerability published on April 16, 2023. XWiki Platform is a generic wiki platform offering runtime services for applications built on top of it. Any user with the right to add an object on a page can execute arbitrary Groovy, Python or Velocity code in XWiki leading to full access to the XWiki installation. The root cause is improper…
When was CVE-2023-30537 disclosed?
CVE-2023-30537 was first published in the National Vulnerability Database on April 16, 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-2023-30537 actively exploited?
CVE-2023-30537 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 60.3% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2023-30537?
CVE-2023-30537 has a CVSS v3 base score of 9.9 (NVD).
How do I remediate CVE-2023-30537?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-30537, 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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