CVE-2025-53093

HIGHNVD 8.68.6—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 8.6 under NVD CVSS v3. EPSS exploit probability: 0.4%, top 72% 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
8.6EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.6Exploit: Elevated riskExposed: 0

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

TabberNeue is a MediaWiki extension that allows the wiki to create tabs. Starting in version 3.0.0 and prior to version 3.1.1, any user can insert arbitrary HTMLinto the DOM by inserting a payload into any allowed attribute of the `` tag. Version 3.1.1 contains a patch for the bug.

CVSS v3
8.6
EG Score
8.6(medium)
EG Risk
70(Attend)
EG Risk 70/100SSVC: Attend

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
Severity86% × 45%
Exploitation40% × 40%
Automatability100% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS PROB
0%
EPSS %ILE
33%
KEV
Not listed

Published

June 27, 2025

Last Modified

April 15, 2026

Advisory Details (6)

Auto-updated Sep 1, 2026
🔬 Proof of concept available. Patch available. Sources: github_commit, github.
github Patch Available🟡 PoC Available

Stored XSS through wikitext in TabberNeue · Advisory · StarCitizenTools/mediawiki-extensions-TabberNeue · GitHub

https://github.com/StarCitizenTools/mediawiki-extensions-TabberNeue/security/advisories/GHSA-jfj7-249r-7j2m
github_commit Patch Available

commit 62ce0fcdf32b (StarCitizenTools/mediawiki-extensions-TabberNeue)

Patch available: StarCitizenTools/mediawiki-extensions-TabberNeue v3.0.0 (contains commit 62ce0fcdf32b)

https://github.com/StarCitizenTools/mediawiki-extensions-TabberNeue/commit/62ce0fcdf32bd3cfa77f92ff6b940459a14315fa
github_commit Patch Available

commit 4cdf217ef96d (StarCitizenTools/mediawiki-extensions-TabberNeue)

Patch available: StarCitizenTools/mediawiki-extensions-TabberNeue v3.1.1 (contains commit 4cdf217ef96d)

https://github.com/StarCitizenTools/mediawiki-extensions-TabberNeue/commit/4cdf217ef96da74a1503d1dd0bb0ed898fc2a612
generic

mediawiki-extensions-TabberNeue/includes/templates/Tabs.mustache at 3a23b703ce36cfc4128e7921841f68230be4059a · StarCitizenTools/mediawiki-extensions-TabberNeue · GitHub

https://github.com/StarCitizenTools/mediawiki-extensions-TabberNeue/blob/3a23b703ce36cfc4128e7921841f68230be4059a/includes/templates/Tabs.mustache#L1
generic

mediawiki-extensions-TabberNeue/includes/Tabber.php at 3a23b703ce36cfc4128e7921841f68230be4059a · StarCitizenTools/mediawiki-extensions-TabberNeue · GitHub

https://github.com/StarCitizenTools/mediawiki-extensions-TabberNeue/blob/3a23b703ce36cfc4128e7921841f68230be4059a/includes/Tabber.php#L76
generic

mediawiki-extensions-TabberNeue/includes/Components/TabberComponentTabs.php at 3a23b703ce36cfc4128e7921841f68230be4059a · StarCitizenTools/mediawiki-extensions-TabberNeue · GitHub

https://github.com/StarCitizenTools/mediawiki-extensions-TabberNeue/blob/3a23b703ce36cfc4128e7921841f68230be4059a/includes/Components/TabberComponentTabs.php#L15-L31

Affected Packages

(1 across 1 ecosystem)
Packagist(1)
PackageVulnerable rangeFixed inDependents
starcitizentools/tabber-neuev3.0.0, v3.1.03.1.1—

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 8× in last 7d / 30× 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 179 total refreshes for this CVE.

  1. 2026-09-19 15:42 UTCEPSS rescore
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Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2025-53093?
CVE-2025-53093 is a high vulnerability published on June 27, 2025. TabberNeue is a MediaWiki extension that allows the wiki to create tabs. Starting in version 3.0.0 and prior to version 3.1.1, any user can insert arbitrary HTMLinto the DOM by inserting a payload into any allowed attribute of the <tabber> tag. Version 3.1.1 contains a patch for the bug.
When was CVE-2025-53093 disclosed?
CVE-2025-53093 was first published in the National Vulnerability Database on June 27, 2025, with the most recent update on April 15, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2025-53093 actively exploited?
CVE-2025-53093 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 66.9% of all scored CVEs.
What is the CVSS score of CVE-2025-53093?
CVE-2025-53093 has a CVSS v3 base score of 8.6 (NVD).
How do I remediate CVE-2025-53093?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2025-53093, 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

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