CVE-2026-74793

MEDIUMPre-NVD 6.16.1
EchelonGraph scoreMEDIUM confidence

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

Score 6.1 from GitHub Security Advisory published 2026-08-23. A secondary CVSS source baseline 6.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, a secondary CVSS source
Trending — 3 sources updated this weekElevated
6.1EG
EchelonGraph verdictPlan mitigationRemediate within your standard update timelines (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: 0.2%CVSS: 6.1Exploit: No code on recordExposed services: Not assessed

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

The CVE record's CNA (VulnCheck) lists EmilStenstrom justhtml versions before 3.11.0 as affected, and EmilStenstrom justhtml versions 3.11.0 as unaffected. No release containing a fix is confirmed on record.

justhtml before 3.11.0 contains a cross-site scripting vulnerability where the default sanitizer bypasses event handler removal in selectedcontent projections. Attackers can inject SVG or MathML elements with event handlers that are cloned and reinserted into output without sanitization, enabling stored or reflected XSS attacks.

CVSS v3
6.1
EG Score
6.1MEDIUMmedium confidence
EG Risk
43
EG Risk 43/100

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)
Severity61% × 45%
The EG Score, 6.1 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 or medium mission impact; Track* at high (mission-essential systems).
Exploitation public PoC (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (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: No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines, and watch the vendor's advisory for the fix.
EPSS PROB
0.2%
EPSS %ILE
15th
KEV
Not listed

SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Track* at high (mission-essential systems).

No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines, and watch the vendor's advisory for the fix.

Exploitation public PoC (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (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)60 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 partial (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 23, 2026

Last Modified

October 12, 2026

Advisory Details (2)

Auto-updated Aug 23, 2026
No fix on record yet. Sources: github.
Web page

justhtml before 3.11.0 XSS via selectedcontent projection | Advisories | VulnCheck

https://www.vulncheck.com/advisories/justhtml-before-xss-via-selectedcontent-projection
GitHub advisoryMentions a patch (unverified)

Default sanitizer bypass: <selectedcontent> projection re-inserts unsanitized subtree (plus two availability findings) · Advisory · EmilStenstrom/justhtml · GitHub

Affected: 1.14.0, so this looks distinct. There is no

https://github.com/EmilStenstrom/justhtml/security/advisories/GHSA-gjf2-f4jc-69xf

Vendor Advisories for CVE-2026-74793(1)

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

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 18× in last 7d / 79× 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.

Showing the most recent 99 of 147 refreshes 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. 1 repeat row among the latest 100 is merged into the row it repeats. The 48 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-13 16:35 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  2. 2026-10-12 16:35 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  3. 2026-10-12 16:32 UTCGHSA enrichmentGHSA-h7rw-29pr-mcj6 · GitHub CVSS 6.1
  4. 2026-10-12 15:39 UTCEG score recompute
  5. 2026-10-11 19:25 UTCEG score recompute
  6. 2026-10-11 16:41 UTCEG score recompute
  7. 2026-10-11 14:00 UTCEG score recompute
  8. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  9. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  10. 2026-10-10 14:12 UTCEG score recompute
  11. 2026-10-10 14:12 UTCGHSA enrichmentGHSA-h7rw-29pr-mcj6 · GitHub CVSS 6.1
  12. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  13. 2026-10-09 05:05 UTCEG score recompute
  14. 2026-10-09 05:05 UTCGHSA enrichmentGHSA-h7rw-29pr-mcj6 · GitHub CVSS 6.1
  15. 2026-10-08 17:13 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  16. 2026-10-08 04:23 UTCEG score recompute
  17. 2026-10-08 04:23 UTCGHSA enrichmentGHSA-h7rw-29pr-mcj6 · GitHub CVSS 6.1
  18. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  19. 2026-10-07 02:22 UTCEG score recompute
  20. 2026-10-07 02:22 UTCGHSA enrichmentGHSA-h7rw-29pr-mcj6 · GitHub CVSS 6.1
  21. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  22. 2026-10-06 03:38 UTCEG score recompute
  23. 2026-10-06 03:38 UTCGHSA enrichmentGHSA-h7rw-29pr-mcj6 · GitHub CVSS 6.1
  24. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  25. 2026-10-05 04:48 UTCEG score recompute
Show 74 more
  1. 2026-10-05 04:48 UTCGHSA enrichmentGHSA-h7rw-29pr-mcj6 · GitHub CVSS 6.1
  2. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  3. 2026-10-04 04:11 UTCEG score recompute
  4. 2026-10-04 04:11 UTCGHSA enrichmentGHSA-h7rw-29pr-mcj6 · GitHub CVSS 6.1
  5. 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  6. 2026-10-03 05:28 UTCEG score recompute
  7. 2026-10-03 05:28 UTCGHSA enrichmentGHSA-h7rw-29pr-mcj6 · GitHub CVSS 6.1
  8. 2026-10-02 06:44 UTCEG score recompute
  9. 2026-10-02 06:44 UTCGHSA enrichmentGHSA-h7rw-29pr-mcj6 · GitHub CVSS 6.1
  10. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  11. 2026-10-01 06:08 UTCEG score recompute
  12. 2026-10-01 06:08 UTCGHSA enrichmentGHSA-h7rw-29pr-mcj6 · GitHub CVSS 6.1
  13. 2026-09-30 07:22 UTCEG score recompute
  14. 2026-09-30 07:22 UTCGHSA enrichmentGHSA-h7rw-29pr-mcj6 · GitHub CVSS 6.1
  15. 2026-09-29 15:24 UTCEPSS rescoreEPSS 0.3% · 18th percentile
  16. 2026-09-28 23:23 UTCEG score recompute
  17. 2026-09-28 23:23 UTCGHSA enrichmentGHSA-h7rw-29pr-mcj6 · GitHub CVSS 6.1
  18. 2026-09-28 13:52 UTCEPSS rescoreEPSS 0.3% · 18th percentile
  19. 2026-09-27 23:54 UTCEG score recompute
  20. 2026-09-27 23:54 UTCGHSA enrichmentGHSA-h7rw-29pr-mcj6 · GitHub CVSS 6.1
  21. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.3% · 18th percentile
  22. 2026-09-27 00:52 UTCEG score recompute
  23. 2026-09-27 00:52 UTCGHSA enrichmentGHSA-h7rw-29pr-mcj6 · GitHub CVSS 6.1
  24. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.3% · 18th percentile
  25. 2026-09-26 00:28 UTCEPSS rescoreEPSS 0.3% · 18th percentile
  26. 2026-09-24 18:55 UTCEG score recompute
  27. 2026-09-24 18:55 UTCGHSA enrichmentGHSA-h7rw-29pr-mcj6 · GitHub CVSS 6.1
  28. 2026-09-24 14:04 UTCEPSS rescoreEPSS 0.3% · 18th percentile
  29. 2026-09-23 19:59 UTCEG score recompute
  30. 2026-09-23 19:59 UTCGHSA enrichmentGHSA-h7rw-29pr-mcj6 · GitHub CVSS 6.1
  31. 2026-09-23 17:54 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  32. 2026-09-22 19:40 UTCEG score recompute
  33. 2026-09-22 19:40 UTCGHSA enrichmentGHSA-h7rw-29pr-mcj6 · GitHub CVSS 6.1
  34. 2026-09-22 16:01 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  35. 2026-09-21 21:09 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  36. 2026-09-21 17:47 UTCEG score recompute
  37. 2026-09-21 17:47 UTCGHSA enrichmentGHSA-h7rw-29pr-mcj6 · GitHub CVSS 6.1
  38. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  39. 2026-09-20 17:45 UTCGHSA enrichmentGHSA-h7rw-29pr-mcj6 · GitHub CVSS 6.1
  40. 2026-09-19 18:42 UTCEG score recompute
  41. 2026-09-19 18:42 UTCGHSA enrichmentGHSA-h7rw-29pr-mcj6 · GitHub CVSS 6.1
  42. 2026-09-18 19:58 UTCEG score recompute
  43. 2026-09-18 19:58 UTCGHSA enrichmentGHSA-h7rw-29pr-mcj6 · GitHub CVSS 6.1
  44. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  45. 2026-09-17 21:14 UTCEG score recompute
  46. 2026-09-17 21:14 UTCGHSA enrichmentGHSA-h7rw-29pr-mcj6 · GitHub CVSS 6.1
  47. 2026-09-16 19:39 UTCEG score recompute
  48. 2026-09-16 19:39 UTCGHSA enrichmentGHSA-h7rw-29pr-mcj6 · GitHub CVSS 6.1
  49. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  50. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  51. 2026-09-15 18:46 UTCEG score recompute
  52. 2026-09-15 18:46 UTCGHSA enrichmentGHSA-h7rw-29pr-mcj6 · GitHub CVSS 6.1
  53. 2026-09-15 03:12 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  54. 2026-09-14 19:36 UTCGHSA enrichmentGHSA-h7rw-29pr-mcj6 · GitHub CVSS 6.1
  55. 2026-09-13 20:52 UTCEG score recompute
  56. 2026-09-13 20:52 UTCGHSA enrichmentGHSA-h7rw-29pr-mcj6 · GitHub CVSS 6.1
  57. 2026-09-12 22:08 UTCEG score recompute
  58. 2026-09-12 22:08 UTCGHSA enrichmentGHSA-h7rw-29pr-mcj6 · GitHub CVSS 6.1
  59. 2026-09-12 15:02 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  60. 2026-09-11 23:24 UTCEG score recompute
  61. 2026-09-11 23:24 UTCGHSA enrichmentGHSA-h7rw-29pr-mcj6 · GitHub CVSS 6.1
  62. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  63. 2026-09-11 00:16 UTCEG score recompute
  64. 2026-09-11 00:15 UTCGHSA enrichmentGHSA-h7rw-29pr-mcj6 · GitHub CVSS 6.1
  65. 2026-09-10 09:35 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  66. 2026-09-10 00:38 UTCGHSA enrichmentGHSA-h7rw-29pr-mcj6 · GitHub CVSS 6.1
  67. 2026-09-09 01:36 UTCEG score recompute
  68. 2026-09-09 01:36 UTCGHSA enrichmentGHSA-h7rw-29pr-mcj6 · GitHub CVSS 6.1
  69. 2026-09-08 22:01 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  70. 2026-09-08 01:12 UTCEG score recompute
  71. 2026-09-08 01:12 UTCGHSA enrichmentGHSA-h7rw-29pr-mcj6 · GitHub CVSS 6.1
  72. 2026-09-07 02:27 UTCEG score recompute
  73. 2026-09-07 02:27 UTCGHSA enrichmentGHSA-h7rw-29pr-mcj6 · GitHub CVSS 6.1
  74. 2026-09-06 13:48 UTCEPSS rescoreEPSS 0.2% · 10th percentile

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-74793?
CVE-2026-74793 is a medium-severity vulnerability; its CVE record was published on August 23, 2026. justhtml before 3.11.0 contains a cross-site scripting vulnerability where the default sanitizer bypasses event handler removal in selectedcontent projections. Attackers can inject SVG or MathML elements with event handlers that are cloned and reinserted into output without sanitization, enabling…
When was CVE-2026-74793 made public?
CVE-2026-74793 was made public on August 6, 2026: that is the date its CVE record's CNA, VulnCheck, gives for when the vulnerability was made public. The CVE record itself was published on August 23, 2026. EchelonGraph's copy of the record carries a last-modified date of October 12, 2026; the record at its source may have been updated since.
Is CVE-2026-74793 actively exploited?
CVE-2026-74793 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (15th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-74793?
CVE-2026-74793 has a CVSS base score of 6.1 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-74793?
No fix for CVE-2026-74793 is confirmed yet. Until one is published, restrict network exposure of the affected system or apply the vendor's mitigation — for example, keep it off the internet or limit it to trusted networks — and watch the vendor's advisory for the fix. The CVE record's CNA (VulnCheck) lists EmilStenstrom justhtml versions before 3.11.0 as affected, and EmilStenstrom justhtml versions 3.11.0 as unaffected. No release containing a fix is confirmed on record. The vendor advisories EchelonGraph has for CVE-2026-74793 are linked in the Vendor Advisories panel on this page.

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