CVE-2026-54606

HIGHPre-NVD 8.58.5
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to the CVSS score beside it.

This high-severity CVE scores 8.5 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.6% (46th percentile of EPSS-scored CVEs). No GitHub Security Advisory CVSS is on record for this CVE.

Triggered by: Headline CVSS from a secondary CVSS source
Sources: EPSS, a secondary CVSS source
Elevated
8.5EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines at low or medium mission impact and sooner than that at high (the SSVC decision on this page).
  • CISA's Vulnrichment rates exploitation as PoC; EchelonGraph holds no exploit-code reference for it
CISA-KEV: Not listedEPSS PROB: 0.6%CVSS: 8.5Exploit: No code on recordExposed services: Not assessed

A fix is available — apply it.

SunEditor is a lightweight and powerful WYSIWYG editor in vanilla JavaScript with no dependencies. Prior to 3.1.4, the SunEditor Embed plugin in src/plugins/modal/embed.js parses attacker-controlled raw embed HTML with DOMParser and processes the resulting DOM nodes. When an external script element follows a valid iframe, the plugin recreates a script element from the attacker-controlled src attribute and appends it to the live DOM, causing JavaScript execution in the editor page. If an application stores or reflects SunEditor content without additional backend sanitization, an attacker who can submit embed HTML can trigger stored or reflected cross-site scripting when another user opens, previews, renders, or edits the content, enabling access to page data and account actions as the victim. This issue is fixed in version 3.1.4.

CVSS v3
8.5
EG Score
8.5HIGHmedium confidence
EG Risk
54
EG Risk 54/100

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 (value × EchelonGraph’s weight)
Severity85% × 45%
The EG Score, 8.5 of 10.
Exploitation40% × 40%
EchelonGraph's fixed weight for EG-KEV Tier 3 (Elevated): a constant, not a probability.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low, Track* at medium and Attend at high mission impact.
Exploitation public PoC (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
EPSS PROB
0.6%
EPSS %ILE
46th
KEV
Not listed

SSVC (CISA's decision table, applied by EchelonGraph)Track at low, Track* at medium and Attend at high mission impact.

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation public PoC (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)14 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

August 26, 2026

Last Modified

September 9, 2026

Advisory Details (4)

Auto-updated Aug 26, 2026
Patch available. Sources: github_commit, github_release, github.
GitHub advisoryMentions a patch (unverified)

DOM XSS in SunEditor Embed Plugin via External Script Element After Iframe Embed · Advisory · JiHong88/suneditor · GitHub

https://github.com/JiHong88/suneditor/security/advisories/GHSA-w93q-cq9w-58p7
GitHub release Patch Available

v3.1.4

Patch available: JiHong88/suneditor 3.1.4

https://github.com/JiHong88/suneditor/releases/tag/3.1.4
Web page

[Security][v3.1.3] Critical XSS vulnerability - sanitizer bypass · Issue #1649 · JiHong88/suneditor · GitHub

https://github.com/JiHong88/suneditor/issues/1649
GitHub commit Patch Available

commit 9d43a5e08210 (JiHong88/suneditor)

Patch available: JiHong88/suneditor 3.1.4 (contains commit 9d43a5e08210)

https://github.com/JiHong88/suneditor/commit/9d43a5e082101d2d6475cba86e0d58d7c2cf6677

Vendor Advisories for CVE-2026-54606(1)

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 rangeFix by version rangeDependents
suneditor—
  • every version up to 3.1.4: fixed in 3.1.4
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 14× in last 7d / 56× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. 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. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

  1. 2026-10-13 16:34 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  2. 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  3. 2026-10-12 15:56 UTCEG score recompute
  4. 2026-10-11 19:39 UTCEG score recompute
  5. 2026-10-11 16:54 UTCEG score recompute
  6. 2026-10-11 14:17 UTCEG score recompute
  7. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  8. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  9. 2026-10-10 06:08 UTCEG score recompute
  10. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  11. 2026-10-09 03:22 UTCEG score recompute
  12. 2026-10-08 17:12 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  13. 2026-10-08 01:52 UTCEG score recompute
  14. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  15. 2026-10-06 23:44 UTCEG score recompute
  16. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  17. 2026-10-06 01:41 UTCEG score recompute
  18. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  19. 2026-10-05 01:39 UTCEG score recompute
  20. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  21. 2026-10-03 16:06 UTCEG score recompute
  22. 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  23. 2026-10-02 17:57 UTCEG score recompute
  24. 2026-10-02 17:56 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  25. 2026-10-01 19:55 UTCEG score recompute
Show 67 more
  1. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  2. 2026-09-30 19:58 UTCEG score recompute
  3. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  4. 2026-09-30 06:04 UTCEG score recompute
  5. 2026-09-29 15:22 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  6. 2026-09-29 08:21 UTCEG score recompute
  7. 2026-09-28 21:20 UTCEG score recompute
  8. 2026-09-28 13:51 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  9. 2026-09-27 18:37 UTCEG score recompute
  10. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  11. 2026-09-26 20:35 UTCEG score recompute
  12. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  13. 2026-09-24 18:48 UTCEG score recompute
  14. 2026-09-24 14:04 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  15. 2026-09-23 20:14 UTCEG score recompute
  16. 2026-09-23 17:54 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  17. 2026-09-22 22:13 UTCEG score recompute
  18. 2026-09-22 00:11 UTCEG score recompute
  19. 2026-09-21 02:08 UTCEG score recompute
  20. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  21. 2026-09-19 17:04 UTCEG score recompute
  22. 2026-09-19 06:02 UTCEG score recompute
  23. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  24. 2026-09-17 20:57 UTCEG score recompute
  25. 2026-09-17 19:31 UTCEPSS rescoreEPSS 0.4% · 28th percentile
  26. 2026-09-16 21:31 UTCEG score recompute
  27. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.4% · 28th percentile
  28. 2026-09-16 09:18 UTCEG score recompute
  29. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.4% · 28th percentile
  30. 2026-09-15 09:38 UTCEG score recompute
  31. 2026-09-15 03:11 UTCEPSS rescoreEPSS 0.4% · 28th percentile
  32. 2026-09-14 00:35 UTCEG score recompute
  33. 2026-09-13 16:47 UTCEPSS rescoreEPSS 0.4% · 28th percentile
  34. 2026-09-12 15:32 UTCEG score recompute
  35. 2026-09-11 17:29 UTCEG score recompute
  36. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.4% · 28th percentile
  37. 2026-09-10 19:15 UTCEG score recompute
  38. 2026-09-10 09:35 UTCEPSS rescoreEPSS 0.4% · 28th percentile
  39. 2026-09-09 00:49 UTCEG score recompute
  40. 2026-09-08 22:01 UTCEPSS rescoreEPSS 0.4% · 28th percentile
  41. 2026-09-07 22:25 UTCEG score recompute
  42. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.4% · 28th percentile
  43. 2026-09-07 00:23 UTCEG score recompute
  44. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.4% · 28th percentile
  45. 2026-09-06 02:12 UTCEG score recompute
  46. 2026-09-04 17:06 UTCEG score recompute
  47. 2026-09-04 06:05 UTCEG score recompute
  48. 2026-09-04 05:06 UTCEPSS rescoreEPSS 0.4% · 28th percentile
  49. 2026-09-02 20:33 UTCEG score recompute
  50. 2026-09-02 14:12 UTCEPSS rescoreEPSS 0.4% · 28th percentile
  51. 2026-09-01 19:46 UTCEG score recompute
  52. 2026-09-01 13:54 UTCEPSS rescoreEPSS 0.4% · 28th percentile
  53. 2026-09-01 08:35 UTCEG score recompute
  54. 2026-09-01 04:40 UTCEPSS rescoreEPSS 0.4% · 28th percentile
  55. 2026-08-30 23:23 UTCEG score recompute
  56. 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.4% · 28th percentile
  57. 2026-08-30 12:22 UTCEG score recompute
  58. 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.4% · 28th percentile
  59. 2026-08-29 03:09 UTCEG score recompute
  60. 2026-08-28 21:41 UTCEPSS rescoreEPSS 0.4% · 28th percentile
  61. 2026-08-27 18:04 UTCEG score recompute
  62. 2026-08-27 14:25 UTCEPSS rescoreEPSS 0.4% · 28th percentile
  63. 2026-08-26 19:22 UTCEG score recompute
  64. 2026-08-26 18:41 UTCEG score recompute
  65. 2026-08-26 16:37 UTCEG score recomputeFirst assessed: 8.5 HIGH
  66. 2026-08-26 16:37 UTCNVD updateCVSS v3 → 8.5 · CVSS v4 → 8.5
  67. 2026-08-26 15:27 UTCEG score recompute

Related CVEs(same product + same CWE)

Same product

1 shown

npm:suneditor

Frequently asked(5)

What is CVE-2026-54606?
CVE-2026-54606 is a high-severity vulnerability; its CVE record was published on August 26, 2026. SunEditor is a lightweight and powerful WYSIWYG editor in vanilla JavaScript with no dependencies. Prior to 3.1.4, the SunEditor Embed plugin in src/plugins/modal/embed.js parses attacker-controlled raw embed HTML with DOMParser and processes the resulting DOM nodes. When an external script element…
When was the CVE record for CVE-2026-54606 published?
The CVE record for CVE-2026-54606 was published on August 26, 2026. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of September 9, 2026; the record at its source may have been updated since.
Is CVE-2026-54606 actively exploited?
CVE-2026-54606 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.6% probability of exploitation in the next 30 days (46th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-54606?
CVE-2026-54606 has a CVSS base score of 8.5 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-54606?
A fix for CVE-2026-54606 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-54606 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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