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: 0.6%, top 53% 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
9.3EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 9.3Exploit: Elevated riskExposed: 0

A fix is available — apply it.

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)
EG Risk
58(Track*)
EG Risk 58/100SSVC: 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
Severity93% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Watch closely — could escalate to Attend.
EPSS PROB
1%
EPSS %ILE
47%
KEV
Not listed

Published

May 14, 2026

Last Modified

September 10, 2026

Advisory Details (10)

Auto-updated Sep 14, 2026
🔬 Proof of concept available. Patch available. Sources: github, redhat.
redhat Patch Available
https://access.redhat.com/errata/RHSA-2026:42796
redhat Patch Available
https://access.redhat.com/errata/RHSA-2026:42146
redhat Patch Available
https://access.redhat.com/errata/RHSA-2026:41066
redhat Patch Available
https://access.redhat.com/errata/RHSA-2026:41064
redhat Patch Available
https://access.redhat.com/errata/RHSA-2026:41055
redhat Patch Available
https://access.redhat.com/errata/RHSA-2026:41031
redhat Patch Available
https://access.redhat.com/errata/RHSA-2026:40262
redhat Patch Available
https://access.redhat.com/errata/RHSA-2026:36883
redhat Patch Available
https://access.redhat.com/errata/RHSA-2026:36882
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(20)

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

Patch Availability(27)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatopenshift4/ose-console-rhel9:17883509632026-09-08redhat
redhatopenshift4/ose-console-rhel9:17883599342026-09-08redhat
redhatopenshift4/ose-console-rhel9:17877463822026-09-01redhat
redhatrhacm2/console-rhel9:17873351052026-08-26redhat
redhatmulticluster-engine/console-mce-rhel9:17866688562026-08-25redhat
redhatrhacm2/console-rhel9:17869083612026-08-19redhat
redhatmulticluster-engine/console-mce-rhel9:17869119772026-08-19redhat
redhatsatellite/iop-vulnerability-frontend-rhel9:17859373252026-08-06redhat
redhatsatellite/iop-host-inventory-frontend-rhel9:17859564972026-08-06redhat
redhatsatellite/iop-host-inventory-frontend-rhel9:17859227642026-08-06redhat
redhatdevspaces/dashboard-rhel9:17847371502026-07-29redhat
redhatmulticluster-engine/console-mce-rhel9:17850786042026-07-29redhat
redhatrhacm2/console-rhel9:17850785812026-07-29redhat
redhatmulticluster-engine/console-mce-rhel9:17843123842026-07-28redhat
redhatrhacm2/console-rhel9:17845788122026-07-28redhat
redhatcontainer-native-virtualization/kubevirt-console-plugin-rhel9:17848443822026-07-27redhat
redhatcontainer-native-virtualization/kubevirt-console-plugin-rhel9:17846299642026-07-27redhat
redhatquay/quay-rhel8:17843519662026-07-21redhat
redhatquay/quay-rhel8:17843539042026-07-21redhat
redhatquay/quay-rhel8:17837518652026-07-20redhat
redhatquay/quay-rhel8:17837504472026-07-16redhat
redhatmulticluster-engine/console-mce-rhel9:17833510022026-07-16redhat
redhatquay/quay-rhel9:17839558462026-07-16redhat
redhatrhacm2/console-rhel9:17833509522026-07-16redhat
redhatquay/quay-rhel8:17841258382026-07-15redhat
redhatmulticluster-engine/console-mce-rhel9:17833481812026-07-08redhat
redhatrhacm2/console-rhel9:17834517292026-07-08redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

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.

Additional Vendor Advisories

(9)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 6× in last 7d / 67× 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 270 total refreshes for this CVE.

  1. 2026-09-18 19:28 UTCEPSS rescore
  2. 2026-09-17 19:31 UTCEPSS rescore
  3. 2026-09-16 14:08 UTCEPSS rescore
  4. 2026-09-16 05:15 UTCEPSS rescore
  5. 2026-09-13 16:47 UTCEPSS rescore
  6. 2026-09-12 15:01 UTCEPSS rescore
  7. 2026-09-11 14:53 UTCEPSS rescore
  8. 2026-09-11 09:37 UTCEPSS rescore
  9. 2026-09-10 13:39 UTCEG score recompute
  10. 2026-09-10 13:39 UTCVendor advisory
  11. 2026-09-10 12:26 UTCEG score recompute
  12. 2026-09-10 12:26 UTCVendor advisory
  13. 2026-09-10 09:34 UTCEPSS rescore
  14. 2026-09-09 13:41 UTCEG score recompute
  15. 2026-09-09 13:41 UTCVendor advisory
  16. 2026-09-09 12:39 UTCEG score recompute
  17. 2026-09-09 12:39 UTCVendor advisory
  18. 2026-09-08 22:00 UTCEPSS rescore
  19. 2026-09-07 16:01 UTCEPSS rescore
  20. 2026-09-07 13:53 UTCEG score recompute
  21. 2026-09-07 13:53 UTCVendor advisory
  22. 2026-09-07 12:42 UTCEG score recompute
  23. 2026-09-07 12:42 UTCVendor advisory
  24. 2026-09-06 13:47 UTCEPSS rescore
  25. 2026-09-04 05:06 UTCEPSS rescore
Show 75 more
  1. 2026-09-02 14:12 UTCEPSS rescore
  2. 2026-09-01 13:54 UTCEPSS rescore
  3. 2026-09-01 13:48 UTCEG score recompute
  4. 2026-09-01 13:48 UTCVendor advisory
  5. 2026-09-01 12:21 UTCEG score recompute
  6. 2026-09-01 12:21 UTCVendor advisory
  7. 2026-08-30 19:17 UTCEPSS rescore
  8. 2026-08-30 01:22 UTCEPSS rescore
  9. 2026-08-28 21:41 UTCEPSS rescore
  10. 2026-08-27 14:25 UTCEPSS rescore
  11. 2026-08-27 13:35 UTCEG score recompute
  12. 2026-08-27 13:35 UTCVendor advisory
  13. 2026-08-27 13:02 UTCEG score recompute
  14. 2026-08-27 13:02 UTCVendor advisory
  15. 2026-08-26 16:24 UTCEG score recompute
  16. 2026-08-26 16:24 UTCVendor advisory
  17. 2026-08-26 14:46 UTCEPSS rescore
  18. 2026-08-26 12:21 UTCEG score recompute
  19. 2026-08-26 12:21 UTCVendor advisory
  20. 2026-08-25 13:49 UTCEPSS rescore
  21. 2026-08-25 13:24 UTCEG score recompute
  22. 2026-08-25 13:24 UTCVendor advisory
  23. 2026-08-25 12:20 UTCEG score recompute
  24. 2026-08-25 12:20 UTCVendor advisory
  25. 2026-08-24 13:29 UTCEG score recompute
  26. 2026-08-24 13:29 UTCVendor advisory
  27. 2026-08-24 12:25 UTCEG score recompute
  28. 2026-08-24 12:25 UTCVendor advisory
  29. 2026-08-24 00:52 UTCVendor advisory
  30. 2026-08-23 21:15 UTCVendor advisory
  31. 2026-08-23 17:39 UTCEG score recompute
  32. 2026-08-23 17:39 UTCVendor advisory
  33. 2026-08-23 00:19 UTCEPSS rescore
  34. 2026-08-22 01:50 UTCEG score recompute
  35. 2026-08-22 01:50 UTCVendor advisory
  36. 2026-08-21 23:49 UTCEPSS rescore
  37. 2026-08-20 22:55 UTCEPSS rescore
  38. 2026-08-20 19:36 UTCVendor advisory
  39. 2026-08-20 13:58 UTCEG score recompute
  40. 2026-08-20 13:58 UTCVendor advisory
  41. 2026-08-20 12:43 UTCEG score recompute
  42. 2026-08-20 12:43 UTCVendor advisory
  43. 2026-08-19 17:04 UTCEPSS rescore
  44. 2026-08-19 12:27 UTCEG score recompute
  45. 2026-08-19 12:27 UTCVendor advisory
  46. 2026-08-19 12:11 UTCEG score recompute
  47. 2026-08-19 12:11 UTCVendor advisory
  48. 2026-08-18 13:48 UTCEPSS rescore
  49. 2026-08-18 12:40 UTCEG score recompute
  50. 2026-08-18 12:40 UTCVendor advisory
  51. 2026-08-18 12:18 UTCEG score recompute
  52. 2026-08-18 12:18 UTCVendor advisory
  53. 2026-08-17 13:47 UTCEPSS rescore
  54. 2026-08-17 12:20 UTCEG score recompute
  55. 2026-08-17 12:20 UTCVendor advisory
  56. 2026-08-17 12:12 UTCEG score recompute
  57. 2026-08-17 12:12 UTCVendor advisory
  58. 2026-08-17 10:23 UTCEG score recompute
  59. 2026-08-17 10:23 UTCVendor advisory
  60. 2026-08-16 14:56 UTCEPSS rescore
  61. 2026-08-16 11:17 UTCVendor advisory
  62. 2026-08-16 07:40 UTCVendor advisory
  63. 2026-08-16 03:56 UTCEG score recompute
  64. 2026-08-16 03:56 UTCVendor advisory
  65. 2026-08-16 02:14 UTCEPSS rescore
  66. 2026-08-15 01:30 UTCEPSS rescore
  67. 2026-08-15 00:12 UTCVendor advisory
  68. 2026-08-14 20:35 UTCVendor advisory
  69. 2026-08-14 16:59 UTCVendor advisory
  70. 2026-08-14 13:15 UTCVendor advisory
  71. 2026-08-14 09:38 UTCVendor advisory
  72. 2026-08-14 06:01 UTCVendor advisory
  73. 2026-08-14 02:24 UTCEG score recompute
  74. 2026-08-14 02:24 UTCVendor advisory
  75. 2026-08-13 22:00 UTCEPSS rescore

Related CVEs(same vendor + 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 September 10, 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 1% probability of exploitation in the next 30 days, which ranks it in the top 52.6% of all scored CVEs.
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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