CVE-2026-44990

CRITICALPre-NVD 9.39.3—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 9.3 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.3%, top 76% 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, secondary
Elevated
9.3
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 9.3Exploit: NoneExposed: 0

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

ApostropheCMS is an open-source Node.js content management system, and sanitize-html provides a simple HTML sanitizer with a clear API. Under the default configuration, versions of sanitize-html prior to 2.17.4 can turn attacker-controlled content inside a disallowed xmp element into live HTML or JavaScript. This is a sanitizer bypass in the default disallowedTagsMode: 'discard' path and can lead to stored XSS in applications that render sanitized output back to users. Version 2.17.4 patches the issue.

CVSS v3
9.3
EG Score
9.3(medium)
EPSS
32.0%
KEV
Not listed

Published

May 14, 2026

Last Modified

July 15, 2026

Advisory Details (1)

Auto-updated Jun 12, 2026
🔬 Proof of concept available. Patch available. Sources: github.
github Patch Available🟡 PoC Available

Default XSS via `xmp` raw-text passthrough in `sanitize-html` · Advisory · apostrophecms/apostrophe · GitHub

https://github.com/apostrophecms/apostrophe/security/advisories/GHSA-rpr9-rxv7-x643

Vendor Advisories for CVE-2026-44990(6)

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

Affected Packages

(1 across 1 ecosystem)
npm(1)
PackageVulnerable rangeFixed inDependents
sanitize-html2.17.32.17.4—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 7× 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 147 total refreshes for this CVE.

  1. 2026-07-15 16:57 UTCEPSS rescore
  2. 2026-07-15 02:00 UTCEPSS rescore
  3. 2026-07-13 22:30 UTCEPSS rescore
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  15. 2026-06-29 21:50 UTCEG score recompute
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  24. 2026-06-27 22:38 UTCEG score recompute
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  1. 2026-06-27 08:06 UTCEG score recompute
  2. 2026-06-27 03:08 UTCEPSS rescore
  3. 2026-06-26 20:22 UTCEG score recompute
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  7. 2026-06-25 13:49 UTCEPSS rescore
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  20. 2026-06-17 17:53 UTCEPSS rescore
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  22. 2026-06-17 05:35 UTCEG score recompute
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  25. 2026-06-16 17:52 UTCEPSS rescore
  26. 2026-06-16 11:13 UTCEG score recompute
  27. 2026-06-16 07:14 UTCEG score recompute
  28. 2026-06-16 03:37 UTCEG score recompute
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  30. 2026-06-15 17:49 UTCEPSS rescore
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  40. 2026-06-13 23:00 UTCEPSS rescore
  41. 2026-06-13 09:03 UTCEG score recompute
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  44. 2026-06-12 23:12 UTCEPSS rescore
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  74. 2026-06-08 08:14 UTCEG score recompute
  75. 2026-06-08 04:37 UTCEG score recompute

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-44990?
CVE-2026-44990 is a critical vulnerability published on May 14, 2026. ApostropheCMS is an open-source Node.js content management system, and sanitize-html provides a simple HTML sanitizer with a clear API. Under the default configuration, versions of sanitize-html prior to 2.17.4 can turn attacker-controlled content inside a disallowed xmp element into live HTML or…
When was CVE-2026-44990 disclosed?
CVE-2026-44990 was first published in the National Vulnerability Database on May 14, 2026, with the most recent update on July 15, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-44990 actively exploited?
CVE-2026-44990 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 32.0% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-44990?
CVE-2026-44990 has a CVSS v3 base score of 9.3 (NVD).
How do I remediate CVE-2026-44990?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-44990, 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

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-44990

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