CVE-2026-73648

MEDIUMPre-NVD 5.15.1
EchelonGraph scoreMEDIUM confidence

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

This medium-severity CVE scores 5.1 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.5% (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

Also known asEUVD-2026-58191 (ENISA EUVD) · GHSA-cj75-f6xr-r4g7 (GitHub Security Advisories)Source: ENISA EUVD

5.1EG
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: 0.5%CVSS: 5.1Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

rails-html-sanitizer is responsible for sanitizing HTML fragments in Rails applications. From 1.0.3 until 1.7.1, Rails::HTML::PermitScrubber restricted SVG reference elements in SVG_ALLOW_LOCAL_HREF only when they used xlink:href, even though browsers also accept the plain href attribute. Applications with non-default allowed tags that included SVG use or feImage elements could therefore permit external references; a same-origin external SVG referenced by use could execute scripts in the sanitized document's context, while feImage could load external images for tracking. Applications using the default allowed tags are not affected. This issue is fixed in version 1.7.1.

CVSS
5.1
EG Score
5.1MEDIUMmedium confidence
EG Risk
23
EG Risk 23/100

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)
Severity51% × 45%
Impact severity (EG Severity): CVSS 5.1 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation0.5% × 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: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.5%
EPSS %ILE
46th
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 (5.1): severity, escalated by confirmed exploitation. This CVE's 5.1 is its impact severity (EG Severity), not escalated.

EG Severity
5.1 MEDIUMCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.a secondary CVSS source
EG Likelihood
0.5% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-31). 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.

A fix is available. 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 13, 2026

Last Modified

October 24, 2026

Advisory Details (4)

Auto-updated Aug 13, 2026
Patch available. Sources: github_commit, github_pr, github_release, github.
GitHub advisoryMentions a patch (unverified)

Possible XSS vulnerability with certain configurations of rails-html-sanitizer · Advisory · rails/rails-html-sanitizer · GitHub

https://github.com/rails/rails-html-sanitizer/security/advisories/GHSA-cj75-f6xr-r4g7
GitHub release Patch Available

v1.7.1

Patch available: rails/rails-html-sanitizer v1.7.1

https://github.com/rails/rails-html-sanitizer/releases/tag/v1.7.1
GitHub pull request Patch Available

Properly restrict SVG href attributes

Patch available: rails/rails-html-sanitizer v1.7.1 (PR #223 merged 2026-07-16)

https://github.com/rails/rails-html-sanitizer/pull/223
GitHub commit Patch Available

commit 74dcb8053e6d (rails/rails-html-sanitizer)

Patch available: rails/rails-html-sanitizer v1.7.1 (contains commit 74dcb8053e6d)

https://github.com/rails/rails-html-sanitizer/commit/74dcb8053e6da9921246ce71b06ad9fd65b19586

Vendor Advisories for CVE-2026-73648(1)

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

Patch Availability(1)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
rubygemsrails-html-sanitizer @ 1.7.1 (fixes >= 1.0.3, < 1.7.1)—ghsa

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(4 across 4 ecosystems)
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
ruby-rails-html-sanitizer1.4.4-1 ... 1.7.1-1 (6 versions)
  • every version on: no fix on record
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
ruby-rails-html-sanitizer1.6.2-1, 1.7.0-1, 1.7.0-2, 1.7.1-1
  • every version on: no fix on record
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
ruby-rails-html-sanitizer1.6.2-1, 1.7.0-1, 1.7.0-2
  • every version up to 1.7.1-1: fixed in 1.7.1-1
—
RubyGems(1)
PackageVulnerable rangeFix by version rangeDependents
rails-html-sanitizer1.0.3 ... 1.7.0 (17 versions)
  • 1.0.3 up to 1.7.1: fixed in 1.7.1
—

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 → 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 140 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 40 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 0.5% · 46th percentile
  2. 2026-11-11 16:40 UTCEPSS rescoreEPSS 0.5% · 46th percentile
  3. 2026-11-10 16:45 UTCEPSS rescoreEPSS 0.5% · 46th percentile
  4. 2026-11-09 16:36 UTCEPSS rescoreEPSS 0.5% · 46th percentile
  5. 2026-11-08 16:40 UTCEPSS rescoreEPSS 0.5% · 46th percentile
  6. 2026-11-07 16:39 UTCEPSS rescoreEPSS 0.5% · 46th percentile
  7. 2026-11-06 16:39 UTCEPSS rescoreEPSS 0.5% · 46th percentile
  8. 2026-11-05 16:38 UTCEPSS rescoreEPSS 0.5% · 46th percentile
  9. 2026-11-04 16:36 UTCEPSS rescoreEPSS 0.5% · 45th percentile
  10. 2026-11-03 16:49 UTCEPSS rescoreEPSS 0.5% · 45th percentile
  11. 2026-11-02 16:46 UTCEPSS rescoreEPSS 0.5% · 45th percentile
  12. 2026-11-01 16:35 UTCEPSS rescoreEPSS 0.5% · 45th percentile
  13. 2026-11-01 07:39 UTCGHSA enrichmentGHSA-cj75-f6xr-r4g7 · GitHub severity MODERATE
  14. 2026-11-01 07:39 UTCEchelonGraph re-scored
  15. 2026-10-31 16:33 UTCEPSS rescoreEPSS 0.5% · 45th percentile
  16. 2026-10-30 16:35 UTCEPSS rescoreEPSS 0.5% · 45th percentile
  17. 2026-10-29 17:00 UTCEchelonGraph re-scored
  18. 2026-10-29 16:34 UTCEPSS rescoreEPSS 0.5% · 45th percentile
  19. 2026-10-28 16:33 UTCEPSS rescoreEPSS 0.5% · 45th percentile
  20. 2026-10-27 16:32 UTCEPSS rescoreEPSS 0.5% · 45th percentile
  21. 2026-10-26 16:32 UTCEPSS rescoreEPSS 0.5% · 45th percentile
  22. 2026-10-25 16:34 UTCEPSS rescoreEPSS 0.5% · 45th percentile
  23. 2026-10-25 14:05 UTCEchelonGraph re-scored
  24. 2026-10-24 16:33 UTCEPSS rescoreEPSS 0.5% · 45th percentile
  25. 2026-10-23 18:26 UTCEchelonGraph re-scored
Show 75 more
  1. 2026-10-23 16:32 UTCEPSS rescoreEPSS 0.5% · 45th percentile
  2. 2026-10-22 19:00 UTCEchelonGraph re-scored
  3. 2026-10-22 16:35 UTCEPSS rescoreEPSS 0.5% · 45th percentile
  4. 2026-10-21 16:33 UTCEPSS rescoreEPSS 0.5% · 45th percentile
  5. 2026-10-20 16:33 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  6. 2026-10-19 16:33 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  7. 2026-10-18 16:32 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  8. 2026-10-18 03:15 UTCEchelonGraph re-scored
  9. 2026-10-17 16:35 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  10. 2026-10-16 16:44 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  11. 2026-10-15 16:32 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  12. 2026-10-14 16:33 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  13. 2026-10-13 16:35 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  14. 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  15. 2026-10-12 15:40 UTCEchelonGraph re-scored
  16. 2026-10-11 19:26 UTCEchelonGraph re-scored
  17. 2026-10-11 16:42 UTCEchelonGraph re-scored
  18. 2026-10-11 14:01 UTCEchelonGraph re-scored
  19. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  20. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  21. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  22. 2026-10-08 17:13 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  23. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  24. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  25. 2026-10-06 13:19 UTCEchelonGraph re-scored
  26. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  27. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  28. 2026-10-03 19:47 UTCEchelonGraph re-scored
  29. 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  30. 2026-10-02 07:32 UTCEchelonGraph re-scored
  31. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  32. 2026-09-30 21:46 UTCEchelonGraph re-scored
  33. 2026-09-29 15:24 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  34. 2026-09-29 07:37 UTCEchelonGraph re-scored
  35. 2026-09-28 13:52 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  36. 2026-09-28 08:40 UTCEchelonGraph re-scored
  37. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  38. 2026-09-27 09:43 UTCEchelonGraph re-scored
  39. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  40. 2026-09-25 03:32 UTCEchelonGraph re-scored
  41. 2026-09-23 20:49 UTCEchelonGraph re-scored
  42. 2026-09-23 17:54 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  43. 2026-09-22 21:00 UTCEchelonGraph re-scored
  44. 2026-09-21 21:09 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  45. 2026-09-21 19:54 UTCEchelonGraph re-scored
  46. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  47. 2026-09-19 19:40 UTCEchelonGraph re-scored
  48. 2026-09-18 20:10 UTCEchelonGraph re-scored
  49. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  50. 2026-09-18 00:26 UTCEchelonGraph re-scored
  51. 2026-09-16 23:59 UTCEchelonGraph re-scored
  52. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  53. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  54. 2026-09-15 21:54 UTCEchelonGraph re-scored
  55. 2026-09-15 03:12 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  56. 2026-09-13 23:44 UTCEchelonGraph re-scored
  57. 2026-09-13 00:47 UTCEchelonGraph re-scored
  58. 2026-09-12 15:02 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  59. 2026-09-12 01:49 UTCEchelonGraph re-scored
  60. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  61. 2026-09-11 02:52 UTCEchelonGraph re-scored
  62. 2026-09-10 09:35 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  63. 2026-09-09 04:55 UTCEchelonGraph re-scored
  64. 2026-09-08 22:01 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  65. 2026-09-07 23:45 UTCEchelonGraph re-scored
  66. 2026-09-07 00:47 UTCEchelonGraph re-scored
  67. 2026-09-06 13:48 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  68. 2026-09-06 01:46 UTCEchelonGraph re-scored
  69. 2026-09-05 02:49 UTCEchelonGraph re-scored
  70. 2026-09-04 05:07 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  71. 2026-09-03 04:31 UTCEchelonGraph re-scored
  72. 2026-09-02 14:12 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  73. 2026-09-02 05:13 UTCEchelonGraph re-scored
  74. 2026-09-01 13:54 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  75. 2026-09-01 06:14 UTCEchelonGraph re-scored

Frequently asked(5)

What is CVE-2026-73648?
CVE-2026-73648 is a medium-severity vulnerability; its CVE record was published on August 13, 2026. rails-html-sanitizer is responsible for sanitizing HTML fragments in Rails applications. From 1.0.3 until 1.7.1, Rails::HTML::PermitScrubber restricted SVG reference elements in SVG_ALLOW_LOCAL_HREF only when they used xlink:href, even though browsers also accept the plain href attribute.…
When was the CVE record for CVE-2026-73648 published?
The CVE record for CVE-2026-73648 was published on August 13, 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 October 24, 2026; the record at its source may have been updated since.
Is CVE-2026-73648 actively exploited?
CVE-2026-73648 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.5% probability of exploitation in the next 30 days (46th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-73648?
CVE-2026-73648 has a CVSS base score of 5.1 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-73648?
A fix for CVE-2026-73648 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-73648 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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