CVE-2026-54694

CRITICALPre-NVD 9.69.6
EchelonGraph scoreMEDIUM confidence

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

This critical-severity CVE scores 9.6 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.5% (41st 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

Also known asEUVD-2026-75116 (ENISA EUVD)Source: ENISA EUVD

9.6EG
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: 0.5%CVSS: 9.6Exploit: No code on recordExposed services: Not assessed

The CVE record names the fixed release — apply it.

SkillTree is a micro-learning gamification platform. Prior to version 4.4.2, two independent code flaws combine into a single exploitable attack chain, with three distinct exploitation paths of escalating impact. StringHighlighter.js builds an HTML string by interpolating raw value substrings directly into a template literal with no HTML entity encoding. HighlightedValue.vue renders that string — and all unfiltered plain values — via Vue's v-html directive, which sets innerHTML. Separately, the account registration endpoint accepts firstName, lastName, and nickname fields and stores them without any HTML sanitization. An attacker self-registers with firstName = "" (28 characters — within the 30-character field limit) and visits any quiz. The next time an administrator opens the Quiz Runs page the payload executes in their browser. Three attack paths exist with escalating impact. The first is basic cross-site scripting. Any self-contained payload fitting the 30-character limit (e.g. `, which is 28 chars) fires automatically when the admin navigates to the runs page through normal use. Arbitrary code execution in the admin's browser is confirmed with zero extra steps. The second is remote script loading via import(). Using the split-field technique (lastName = ""), the attacker loads a full JavaScript file from their server. The file has no size limit and can perform any admin action — delete all projects, create backdoor accounts, dump user data, install a keylogger. No phishing required. The only constraint is that the URL must fit in 11 characters (//nsas.cc/p). The third is full cross-site request forgery token theft. Using eval(name), the attacker pre-sets window.name to a data-theft payload by sending the admin one redirect link first. The session cookie is HttpOnly and cannot be read via document.cookie`; however, the XSRF token is readable and the attacker leverages same-origin execution to call admin APIs from inside the victim's browser, relaying the responses to an external server. No admin interaction beyond routine use is required. Version 4.4.2 contains a patch.

CVSS v3
9.6
EG Score
9.6CRITICALmedium confidence
EG Risk
59
EG Risk 59/100

EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.

How it’s computed (value × EchelonGraph’s weight)
Severity96% × 45%
Impact severity (EG Severity): CVSS 9.6 of 10. Never the KEV-floored or EPSS-lifted EG Score.
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: The CVE record names the fixed release. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
EPSS PROB
0.5%
EPSS %ILE
41st
KEV
Not listed

What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)

The EG score (9.6): severity, escalated by confirmed exploitation. This CVE's 9.6 is its impact severity (EG Severity), not escalated.

EG Severity
9.6 CRITICALCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.a secondary CVSS source · CVSS v3.0 or v3.1
EG Likelihood
0.5% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-11-12). FIRST's exploitation probability, not an EchelonGraph model.
Confirmed exploitation
None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
EG Priority
SSVC Track* at medium mission impactTrack at low, Track* at medium and Attend at high mission impact.CISA BOD 26-04: 14 days if the affected system is publicly exposed; Fix on system upgrade if it is not.Each input and its source, and whom BOD 26-04 binds: the SSVC and BOD 26-04 blocks below.

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

The CVE record names the fixed release. 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.

The score's inputs: 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

September 9, 2026

Last Modified

September 10, 2026

Advisory Details (1)

Auto-updated Oct 7, 2026
Fix named in the CVE record. Sources: github.
GitHub advisoryMentions a patch (unverified)

Stored XSS in NationalSecurityAgency/skills-service via User Registration Enabling Admin Account Takeover · Advisory · NationalSecurityAgency/skills-service · GitHub

https://github.com/NationalSecurityAgency/skills-service/security/advisories/GHSA-hqfg-c8wf-w2g8

Weakness Classification(5)

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 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 its CVE.org record (CNA or CISA ADP). 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). "EchelonGraph re-scored" is our own recompute of this CVE's score, not an update from a source, and is not counted in the refreshes above. Most recent first.

Showing the most recent 100 of 134 rows on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. None are among the latest 100 rows. The 34 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-11-12 23:55 UTCEchelonGraph re-scored
  2. 2026-11-12 16:34 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  3. 2026-11-12 02:02 UTCEchelonGraph re-scored
  4. 2026-11-11 16:40 UTCEPSS rescoreEPSS 0.5% · 41st percentile
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  6. 2026-11-10 16:44 UTCEPSS rescoreEPSS 0.5% · 41st percentile
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  8. 2026-11-09 16:35 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  9. 2026-11-09 08:18 UTCEchelonGraph re-scored
  10. 2026-11-08 16:40 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  11. 2026-11-08 10:26 UTCEchelonGraph re-scored
  12. 2026-11-07 16:39 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  13. 2026-11-07 12:32 UTCEchelonGraph re-scored
  14. 2026-11-06 16:38 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  15. 2026-11-06 12:25 UTCOSV refresh
  16. 2026-11-05 16:46 UTCEchelonGraph re-scored
  17. 2026-11-05 16:38 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  18. 2026-11-04 18:53 UTCEchelonGraph re-scored
  19. 2026-11-04 16:35 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  20. 2026-11-03 21:00 UTCEchelonGraph re-scored
  21. 2026-11-03 16:48 UTCEPSS rescoreEPSS 0.5% · 40th percentile
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  23. 2026-11-02 16:45 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  24. 2026-11-02 01:15 UTCEchelonGraph re-scored
  25. 2026-11-01 16:34 UTCEPSS rescoreEPSS 0.5% · 40th percentile
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  1. 2026-11-01 03:21 UTCEchelonGraph re-scored
  2. 2026-10-31 05:28 UTCEchelonGraph re-scored
  3. 2026-10-30 16:34 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  4. 2026-10-30 07:35 UTCEchelonGraph re-scored
  5. 2026-10-29 16:33 UTCEPSS rescoreEPSS 0.5% · 40th percentile
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  7. 2026-10-28 16:32 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  8. 2026-10-28 11:50 UTCEchelonGraph re-scored
  9. 2026-10-27 16:32 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  10. 2026-10-27 13:51 UTCEchelonGraph re-scored
  11. 2026-10-26 16:31 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  12. 2026-10-25 16:50 UTCEchelonGraph re-scored
  13. 2026-10-25 16:33 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  14. 2026-10-25 14:19 UTCEchelonGraph re-scored
  15. 2026-10-24 18:57 UTCEchelonGraph re-scored
  16. 2026-10-24 16:33 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  17. 2026-10-23 21:05 UTCEchelonGraph re-scored
  18. 2026-10-23 16:32 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  19. 2026-10-22 23:12 UTCEchelonGraph re-scored
  20. 2026-10-22 16:34 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  21. 2026-10-22 01:19 UTCEchelonGraph re-scored
  22. 2026-10-21 16:33 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  23. 2026-10-21 03:22 UTCEchelonGraph re-scored
  24. 2026-10-20 16:33 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  25. 2026-10-20 05:28 UTCEchelonGraph re-scored
  26. 2026-10-19 16:32 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  27. 2026-10-19 06:54 UTCEchelonGraph re-scored
  28. 2026-10-18 16:32 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  29. 2026-10-18 03:30 UTCEchelonGraph re-scored
  30. 2026-10-17 16:34 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  31. 2026-10-17 06:14 UTCEchelonGraph re-scored
  32. 2026-10-16 16:42 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  33. 2026-10-16 07:22 UTCEchelonGraph re-scored
  34. 2026-10-15 16:32 UTCEPSS rescoreEPSS 0.5% · 39th percentile
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  36. 2026-10-14 16:33 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  37. 2026-10-14 01:57 UTCEchelonGraph re-scored
  38. 2026-10-13 16:34 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  39. 2026-10-12 22:14 UTCEchelonGraph re-scored
  40. 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  41. 2026-10-12 15:56 UTCEchelonGraph re-scored
  42. 2026-10-11 19:39 UTCEchelonGraph re-scored
  43. 2026-10-11 16:54 UTCEchelonGraph re-scored
  44. 2026-10-11 14:17 UTCEchelonGraph re-scored
  45. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  46. 2026-10-11 11:52 UTCEchelonGraph re-scored
  47. 2026-10-10 20:12 UTCEchelonGraph re-scored
  48. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  49. 2026-10-09 23:55 UTCEchelonGraph re-scored
  50. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  51. 2026-10-08 23:57 UTCEchelonGraph re-scored
  52. 2026-10-08 17:12 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  53. 2026-10-07 23:50 UTCEchelonGraph re-scored
  54. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  55. 2026-10-06 16:03 UTCEchelonGraph re-scored
  56. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.5% · 38th percentile
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  58. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.5% · 38th percentile
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  60. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  61. 2026-10-03 19:09 UTCEchelonGraph re-scored
  62. 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  63. 2026-10-02 21:20 UTCEchelonGraph re-scored
  64. 2026-10-02 17:56 UTCEPSS rescoreEPSS 0.5% · 38th percentile
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  66. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  67. 2026-09-30 18:21 UTCEchelonGraph re-scored
  68. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.5% · 38th percentile
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  70. 2026-09-29 15:22 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  71. 2026-09-28 22:32 UTCEchelonGraph re-scored
  72. 2026-09-28 18:43 UTCEchelonGraph re-scored
  73. 2026-09-28 13:51 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  74. 2026-09-27 14:43 UTCEchelonGraph re-scored
  75. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.5% · 38th percentile

Related CVEs(same CWE)· as of November 12, 2026

Frequently asked(5)

What is CVE-2026-54694?
CVE-2026-54694 is a critical-severity vulnerability; its CVE record was published on September 9, 2026. SkillTree is a micro-learning gamification platform. Prior to version 4.4.2, two independent code flaws combine into a single exploitable attack chain, with three distinct exploitation paths of escalating impact. StringHighlighter.js builds an HTML string by interpolating raw value substrings…
When was the CVE record for CVE-2026-54694 published?
The CVE record for CVE-2026-54694 was published on September 9, 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 10, 2026; the record at its source may have been updated since.
Is CVE-2026-54694 actively exploited?
CVE-2026-54694 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.5% probability of exploitation in the next 30 days (41st percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-54694?
CVE-2026-54694 has a CVSS base score of 9.6 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-54694?
The CVE record for CVE-2026-54694 names the fix: "Version 4.4.2 contains a patch."

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