CVE-2026-47666

HIGHPre-NVD 7.67.6
EchelonGraph scoreMEDIUM confidence

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

This high-severity CVE scores 7.6 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.3% (28th 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-2026-66811 (ENISA EUVD)Source: ENISA EUVD

7.6EG
EchelonGraph verdictPlan a fixRemediate 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: 0.3%CVSS: 7.6Exploit: No code on recordExposed services: Not assessed

A fix is available — apply it.

Penpot is an open-source design and prototyping platform. In versions up to and including 2.14.3, Penpot is vulnerable to stored cross-site scripting through custom font family names, which are interpolated into a @font-face CSS rule and injected into the page as HTML without sanitization. Because the backend accepts an arbitrary font-family string and the frontend writes the resulting style through innerHTML, a name containing markup such as a closing style tag followed by a script can break out of the style element and execute JavaScript on the Penpot origin. The attack is passive: any team member who opens a file referencing the malicious font triggers script execution simply by rendering the page, allowing theft of session cookies, actions performed as the victim, and access to their files and projects. This issue is fixed in version 2.15.3.

CVSS v3
7.6
EG Score
7.6HIGHmedium confidence
EG Risk
50
EG Risk 50/100

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)
Severity76% × 45%
Impact severity (EG Severity): CVSS 7.6 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 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: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.3%
EPSS %ILE
28th
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 (7.6): severity, escalated by confirmed exploitation. This CVE's 7.6 is its impact severity (EG Severity), not escalated.

EG Severity
7.6 HIGHCVSS-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
0.3% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-11-07). 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 or medium mission impact; Track* at high (mission-essential systems).CISA BOD 26-04: 60 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 or medium mission impact; Track* at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines.

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.

The score's inputs: 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 26, 2026

Last Modified

September 9, 2026

Advisory Details (2)

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

CSS injection / XSS via custom font family name — unsanitized into innerHTML · Advisory · penpot/penpot · GitHub

https://github.com/penpot/penpot/security/advisories/GHSA-w5hh-gj5c-5wpc
GitHub commit Patch Available

commit 67d95679711d (penpot/penpot)

Patch available: penpot/penpot 2.15.3 (contains commit 67d95679711d)

https://github.com/penpot/penpot/commit/67d95679711da538b3b22a873bcb6c197104dc0c

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 7× 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 121 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 21 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-11-12 16:34 UTCEPSS rescoreEPSS 0.3% · 28th percentile
  2. 2026-11-11 16:39 UTCEPSS rescoreEPSS 0.3% · 28th percentile
  3. 2026-11-10 16:44 UTCEPSS rescoreEPSS 0.3% · 28th percentile
  4. 2026-11-09 16:35 UTCEPSS rescoreEPSS 0.3% · 28th percentile
  5. 2026-11-08 16:39 UTCEPSS rescoreEPSS 0.3% · 28th percentile
  6. 2026-11-08 01:38 UTCEchelonGraph re-scored
  7. 2026-11-07 16:39 UTCEPSS rescoreEPSS 0.3% · 28th percentile
  8. 2026-11-06 16:38 UTCEPSS rescoreEPSS 0.3% · 28th percentile
  9. 2026-11-05 16:37 UTCEPSS rescoreEPSS 0.3% · 28th percentile
  10. 2026-11-04 16:35 UTCEPSS rescoreEPSS 0.3% · 28th percentile
  11. 2026-11-03 16:48 UTCEPSS rescoreEPSS 0.3% · 28th percentile
  12. 2026-11-02 16:45 UTCEPSS rescoreEPSS 0.3% · 28th percentile
  13. 2026-11-01 16:34 UTCEPSS rescoreEPSS 0.3% · 28th percentile
  14. 2026-10-31 21:18 UTCEchelonGraph re-scored
  15. 2026-10-31 16:32 UTCEPSS rescoreEPSS 0.3% · 28th percentile
  16. 2026-10-30 16:34 UTCEPSS rescoreEPSS 0.3% · 28th percentile
  17. 2026-10-29 16:33 UTCEPSS rescoreEPSS 0.3% · 28th percentile
  18. 2026-10-28 16:32 UTCEPSS rescoreEPSS 0.3% · 28th percentile
  19. 2026-10-27 16:32 UTCEPSS rescoreEPSS 0.3% · 28th percentile
  20. 2026-10-26 16:31 UTCEPSS rescoreEPSS 0.3% · 28th percentile
  21. 2026-10-25 16:33 UTCEPSS rescoreEPSS 0.3% · 27th percentile
  22. 2026-10-25 14:24 UTCEchelonGraph re-scored
  23. 2026-10-24 16:58 UTCEchelonGraph re-scored
  24. 2026-10-24 16:33 UTCEPSS rescoreEPSS 0.3% · 27th percentile
  25. 2026-10-23 16:31 UTCEPSS rescoreEPSS 0.3% · 27th percentile
Show 75 more
  1. 2026-10-22 16:34 UTCEPSS rescoreEPSS 0.3% · 27th percentile
  2. 2026-10-21 16:33 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  3. 2026-10-20 16:33 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  4. 2026-10-19 16:32 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  5. 2026-10-18 16:32 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  6. 2026-10-18 03:35 UTCEchelonGraph re-scored
  7. 2026-10-17 16:34 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  8. 2026-10-17 12:39 UTCEchelonGraph re-scored
  9. 2026-10-16 16:42 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  10. 2026-10-15 16:32 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  11. 2026-10-14 16:33 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  12. 2026-10-13 16:34 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  13. 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  14. 2026-10-12 16:01 UTCEchelonGraph re-scored
  15. 2026-10-11 19:44 UTCEchelonGraph re-scored
  16. 2026-10-11 16:59 UTCEchelonGraph re-scored
  17. 2026-10-11 14:23 UTCEchelonGraph re-scored
  18. 2026-10-11 13:48 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  19. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  20. 2026-10-10 06:02 UTCEchelonGraph re-scored
  21. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  22. 2026-10-09 03:19 UTCEchelonGraph re-scored
  23. 2026-10-08 17:12 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  24. 2026-10-08 01:43 UTCEchelonGraph re-scored
  25. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  26. 2026-10-06 19:16 UTCEchelonGraph re-scored
  27. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  28. 2026-10-05 18:55 UTCEchelonGraph re-scored
  29. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  30. 2026-10-05 07:12 UTCEchelonGraph re-scored
  31. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  32. 2026-10-03 19:22 UTCEchelonGraph re-scored
  33. 2026-10-03 14:25 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  34. 2026-10-02 18:53 UTCEchelonGraph re-scored
  35. 2026-10-01 19:55 UTCEchelonGraph re-scored
  36. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  37. 2026-09-30 19:57 UTCEchelonGraph re-scored
  38. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  39. 2026-09-30 05:59 UTCEchelonGraph re-scored
  40. 2026-09-29 08:48 UTCEchelonGraph re-scored
  41. 2026-09-28 21:19 UTCEchelonGraph re-scored
  42. 2026-09-28 13:51 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  43. 2026-09-27 19:29 UTCEchelonGraph re-scored
  44. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  45. 2026-09-26 20:30 UTCEchelonGraph re-scored
  46. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  47. 2026-09-26 00:27 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  48. 2026-09-24 18:54 UTCEchelonGraph re-scored
  49. 2026-09-23 19:55 UTCEchelonGraph re-scored
  50. 2026-09-23 17:53 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  51. 2026-09-22 19:33 UTCEchelonGraph re-scored
  52. 2026-09-22 08:04 UTCEchelonGraph re-scored
  53. 2026-09-20 21:35 UTCEchelonGraph re-scored
  54. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  55. 2026-09-19 22:36 UTCEchelonGraph re-scored
  56. 2026-09-18 23:36 UTCEchelonGraph re-scored
  57. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  58. 2026-09-18 00:37 UTCEchelonGraph re-scored
  59. 2026-09-16 14:09 UTCEchelonGraph re-scored
  60. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  61. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  62. 2026-09-15 03:38 UTCEchelonGraph re-scored
  63. 2026-09-13 17:10 UTCEchelonGraph re-scored
  64. 2026-09-13 16:47 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  65. 2026-09-12 18:11 UTCEchelonGraph re-scored
  66. 2026-09-11 19:11 UTCEchelonGraph re-scored
  67. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  68. 2026-09-10 20:12 UTCEchelonGraph re-scored
  69. 2026-09-10 09:34 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  70. 2026-09-09 00:47 UTCEchelonGraph re-scored
  71. 2026-09-08 22:00 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  72. 2026-09-07 18:38 UTCEchelonGraph re-scored
  73. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  74. 2026-09-06 19:40 UTCEchelonGraph re-scored
  75. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.2% · 9th percentile

Frequently asked(5)

What is CVE-2026-47666?
CVE-2026-47666 is a high-severity vulnerability; its CVE record was published on August 26, 2026. Penpot is an open-source design and prototyping platform. In versions up to and including 2.14.3, Penpot is vulnerable to stored cross-site scripting through custom font family names, which are interpolated into a @font-face CSS rule and injected into the page as HTML without sanitization. Because…
When was the CVE record for CVE-2026-47666 published?
The CVE record for CVE-2026-47666 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-2026-47666 actively exploited?
CVE-2026-47666 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.3% probability of exploitation in the next 30 days (28th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-47666?
CVE-2026-47666 has a CVSS base score of 7.6 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-47666?
A fix for CVE-2026-47666 is available: update to the fixed version the vendor names in its advisory.

Dependency Blast Radius

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