CVE-2026-72720

MEDIUMPre-NVD 6.46.4
EchelonGraph scoreMEDIUM confidence

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

This medium-severity CVE scores 6.4 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.4% (35th 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

Also known asEUVD-2026-55656 (ENISA EUVD)Source: ENISA EUVD

6.4EG
EchelonGraph verdictMonitorRemediate within your standard update timelines (the SSVC decision on this page).
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.4%CVSS: 6.4Exploit: None knownExposed services: Not assessed

The CVE record names the fixed release — apply it.

Discourse is an open-source discussion platform. Prior to 2026.1.7, 2026.6.2, 2026.7.1, and 2026.8.0-latest.1, Discourse has HTML injection in PrettyText.format_for_email because cooked attribute values are reparsed as markup. Crafted Vimeo iframe sources, secure-upload URLs or dimensions, and hashtag data-slug values can cause decoded attribute text to be reinterpreted as HTML. The vulnerable conversion also fails to strictly validate the Vimeo iframe host and path, allowing non-Vimeo allowlisted iframes to be converted. This issue is fixed in versions 2026.1.7, 2026.6.2, 2026.7.1, and 2026.8.0-latest.1.

CVSS v3
6.4
EG Score
6.4MEDIUMmedium confidence
EG Risk
29
EG Risk 29/100

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)
Severity64% × 45%
Impact severity (EG Severity): CVSS 6.4 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation0.4% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at every mission impact level.
Exploitation none (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: The CVE record names the fixed release. Apply it within your standard update timelines.
EPSS PROB
0.4%
EPSS %ILE
35th
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 (6.4): severity, escalated by confirmed exploitation. This CVE's 6.4 is its impact severity (EG Severity), not escalated.

EG Severity
6.4 MEDIUMCVSS-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
0.4% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-24). 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 every mission impact level.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 every mission impact level.

The CVE record names the fixed release. Apply it within your standard update timelines.

Exploitation none (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 10, 2026

Last Modified

September 8, 2026

Advisory Details (9)

Auto-updated Aug 10, 2026
Fix named in the CVE record. Sources: github_commit, github_pr, github.
GitHub advisoryMentions a patch (unverified)

HTML injection in PrettyText.format_for_email from cooked-attribute reparsing · Advisory · discourse/discourse · GitHub

https://github.com/discourse/discourse/security/advisories/GHSA-3q6f-6gm9-m35v
GitHub pull request

Security fixes for release/2026.1

Fix merged in discourse/discourse PR #42247 on 2026-07-31 — awaiting tagged release

https://github.com/discourse/discourse/pull/42247
GitHub pull request

Security fixes for release/2026.6

Fix merged in discourse/discourse PR #42246 on 2026-07-31 — awaiting tagged release

https://github.com/discourse/discourse/pull/42246
GitHub pull request

Security fixes for release/2026.7

Fix merged in discourse/discourse PR #42245 on 2026-07-31 — awaiting tagged release

https://github.com/discourse/discourse/pull/42245
GitHub pull request

Security fixes for main

Fix merged in discourse/discourse PR #42244 on 2026-07-31 — awaiting tagged release

https://github.com/discourse/discourse/pull/42244
GitHub commit

commit b25a074b1652 (discourse/discourse)

Fix landed in discourse/discourse commit b25a074b1652 — awaiting tagged release

https://github.com/discourse/discourse/commit/b25a074b165253e01fc4c8911b980fc68338ea16
GitHub commit

commit a5d3b112d598 (discourse/discourse)

Fix landed in discourse/discourse commit a5d3b112d598 — awaiting tagged release

https://github.com/discourse/discourse/commit/a5d3b112d598242c1d1803d5a77bf98d5fdabd75
GitHub commit

commit 4b639a52f47f (discourse/discourse)

Fix landed in discourse/discourse commit 4b639a52f47f — awaiting tagged release

https://github.com/discourse/discourse/commit/4b639a52f47fb3d46093bece9df147e4e9517a11
GitHub commit

commit 234ee88a5b9b (discourse/discourse)

Fix landed in discourse/discourse commit 234ee88a5b9b — awaiting tagged release

https://github.com/discourse/discourse/commit/234ee88a5b9b53bf938c53351eab20130323485f

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 7× in last 7d / 31× 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 144 rows on record for this CVE, as 99 entries (1 repeat merged).

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 44 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 0.4% · 35th percentile
  2. 2026-11-11 16:40 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  3. 2026-11-10 16:45 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  4. 2026-11-09 16:36 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  5. 2026-11-08 16:40 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  6. 2026-11-07 16:39 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  7. 2026-11-06 16:39 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  8. 2026-11-05 16:38 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  9. 2026-11-04 16:36 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  10. 2026-11-03 16:49 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  11. 2026-11-02 16:46 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  12. 2026-11-01 16:35 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  13. 2026-10-31 16:33 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  14. 2026-10-30 16:35 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  15. 2026-10-30 06:55 UTCOSV refresh
  16. 2026-10-29 16:34 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  17. 2026-10-28 16:33 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  18. 2026-10-27 16:32 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  19. 2026-10-26 16:32 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  20. 2026-10-25 16:33 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  21. 2026-10-25 14:06 UTCEchelonGraph re-scored
  22. 2026-10-24 16:33 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  23. 2026-10-23 16:32 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  24. 2026-10-22 19:22 UTCEchelonGraph re-scored
  25. 2026-10-22 16:35 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
Show 74 more
  1. 2026-10-21 16:33 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  2. 2026-10-20 16:33 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  3. 2026-10-19 16:33 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  4. 2026-10-18 16:32 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  5. 2026-10-18 03:15 UTCEchelonGraph re-scored
  6. 2026-10-17 16:35 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  7. 2026-10-16 16:44 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  8. 2026-10-15 16:32 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  9. 2026-10-14 16:33 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  10. 2026-10-13 16:35 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  11. 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  12. 2026-10-12 15:41 UTCEchelonGraph re-scored
  13. 2026-10-11 19:27 UTCEchelonGraph re-scored
  14. 2026-10-11 16:42 UTCEchelonGraph re-scored
  15. 2026-10-11 14:02 UTCEchelonGraph re-scored
  16. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  17. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  18. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  19. 2026-10-08 17:13 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  20. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  21. 2026-10-06 18:21 UTCEchelonGraph re-scored
  22. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  23. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  24. 2026-10-05 02:36 UTCEchelonGraph re-scored
  25. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  26. 2026-10-04 04:26 UTCEchelonGraph re-scored
  27. 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  28. 2026-10-02 09:19 UTCEchelonGraph re-scored
  29. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  30. 2026-09-30 22:36 UTCEchelonGraph re-scored
  31. 2026-09-28 13:52 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  32. 2026-09-28 10:50 UTCEchelonGraph re-scored
  33. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  34. 2026-09-27 12:45 UTCEchelonGraph re-scored
  35. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  36. 2026-09-25 04:01 UTCEchelonGraph re-scored
  37. 2026-09-23 21:10 UTCEchelonGraph re-scored
  38. 2026-09-23 17:54 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  39. 2026-09-22 21:16 UTCEchelonGraph re-scored
  40. 2026-09-21 22:09 UTCEchelonGraph re-scored
  41. 2026-09-21 21:09 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  42. 2026-09-20 21:17 UTCEchelonGraph re-scored
  43. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  44. 2026-09-19 23:13 UTCEchelonGraph re-scored
  45. 2026-09-19 00:34 UTCEchelonGraph re-scored
  46. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  47. 2026-09-18 02:30 UTCEchelonGraph re-scored
  48. 2026-09-17 04:26 UTCEchelonGraph re-scored
  49. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  50. 2026-09-16 06:20 UTCEchelonGraph re-scored
  51. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  52. 2026-09-15 08:16 UTCEchelonGraph re-scored
  53. 2026-09-15 03:12 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  54. 2026-09-14 10:11 UTCEchelonGraph re-scored
  55. 2026-09-13 11:54 UTCEchelonGraph re-scored
  56. 2026-09-12 15:02 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  57. 2026-09-11 15:46 UTCEchelonGraph re-scored
  58. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  59. 2026-09-10 17:33 UTCEchelonGraph re-scored
  60. 2026-09-10 09:35 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  61. 2026-09-09 19:24 UTCEchelonGraph re-scored
  62. 2026-09-08 22:01 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  63. 2026-09-07 20:34 UTCEchelonGraph re-scored
  64. 2026-09-06 22:29 UTCEchelonGraph re-scored
  65. 2026-09-06 13:48 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  66. 2026-09-06 00:24 UTCEchelonGraph re-scored
  67. 2026-09-05 02:06 UTCEchelonGraph re-scored
  68. 2026-09-04 05:07 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  69. 2026-09-03 05:58 UTCEchelonGraph re-scored
  70. 2026-09-02 14:12 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  71. 2026-09-02 06:25 UTCEchelonGraph re-scored
  72. 2026-09-01 13:54 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  73. 2026-09-01 07:05 UTCEchelonGraph re-scored
  74. 2026-09-01 04:40 UTCEPSS rescoreEPSS 0.3% · 22nd percentile

Frequently asked(5)

What is CVE-2026-72720?
CVE-2026-72720 is a medium-severity vulnerability; its CVE record was published on August 10, 2026. Discourse is an open-source discussion platform. Prior to 2026.1.7, 2026.6.2, 2026.7.1, and 2026.8.0-latest.1, Discourse has HTML injection in PrettyText.format_for_email because cooked attribute values are reparsed as markup. Crafted Vimeo iframe sources, secure-upload URLs or dimensions, and…
When was the CVE record for CVE-2026-72720 published?
The CVE record for CVE-2026-72720 was published on August 10, 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 8, 2026; the record at its source may have been updated since.
Is CVE-2026-72720 actively exploited?
CVE-2026-72720 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.4% probability of exploitation in the next 30 days (35th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-72720?
CVE-2026-72720 has a CVSS base score of 6.4 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-72720?
The CVE record for CVE-2026-72720 names the fix: "This issue is fixed in versions 2026.1.7, 2026.6.2, 2026.7.1, and 2026.8.0-latest.1."

Dependency Blast Radius

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