CVE-2026-57531

MEDIUMPre-NVD 5.45.4—
EchelonGraph scoreMEDIUM confidence

Score 5.4 from GitHub Security Advisory published 2026-07-24. a secondary CVSS source baseline 5.4; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
5.4EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.4Exploit: None knownExposed: 0

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

Milkdown before 7.21.3 contains a DOM cross-site scripting vulnerability in the @milkdown/plugin-emoji package that allows unauthenticated attackers to execute arbitrary JavaScript in the host application's origin by causing a victim to paste attacker-controlled content. The parseDOM.getAttrs handler stores raw innerHTML of pasted span elements with data-type="emoji" without sanitization, and the toMarkdown runner subsequently assigns this unsanitized value directly to a live DOM element's innerHTML, bypassing the DOMPurify sanitization used in the toDOM path, causing payload execution on every markdown serialization cycle.

CVSS v3
5.4
EG Score
5.4(medium)
EG Risk
24(Track)
EG Risk 24/100SSVC: Track

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
Severity54% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
16%
KEV
Not listed

Published

July 24, 2026

Last Modified

July 27, 2026

Advisory Details (4)

Auto-updated Jul 25, 2026
Patch available. Sources: github_commit, github_pr, github_release.
generic

Milkdown < 7.21.3 DOM XSS via innerHTML Assignment | Advisories | VulnCheck

https://www.vulncheck.com/advisories/milkdown-dom-xss-via-innerhtml-assignment
github_release Patch Available

v7.21.3

Patch available: Milkdown/milkdown v7.21.3

https://github.com/Milkdown/milkdown/releases/tag/v7.21.3
github_pr Patch Available

fix: sanitize unsafe link hrefs and emoji html to prevent stored XSS

Patch available: Milkdown/milkdown v7.21.3 (PR #2410 merged 2026-07-12)

https://github.com/Milkdown/milkdown/pull/2410
github_commit Patch Available

commit db1ae721854a (Milkdown/milkdown)

Patch available: Milkdown/milkdown v7.21.3 (contains commit db1ae721854a)

https://github.com/Milkdown/milkdown/commit/db1ae721854a0ab2f188b83cf8695702966640f1

Vendor Advisories for CVE-2026-57531(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 17× in last 7d / 84× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. 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. Most recent first.

Showing the most recent 100 of 106 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-57531?
CVE-2026-57531 is a medium vulnerability published on July 24, 2026. Milkdown before 7.21.3 contains a DOM cross-site scripting vulnerability in the @milkdown/plugin-emoji package that allows unauthenticated attackers to execute arbitrary JavaScript in the host application's origin by causing a victim to paste attacker-controlled content. The parseDOM.getAttrs…
When was CVE-2026-57531 disclosed?
CVE-2026-57531 was first published in the National Vulnerability Database on July 24, 2026, with the most recent update on July 27, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-57531 actively exploited?
CVE-2026-57531 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 83.9% of all scored CVEs.
What is the CVSS score of CVE-2026-57531?
CVE-2026-57531 has a CVSS v3 base score of 5.4 (NVD).
How do I remediate CVE-2026-57531?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-57531, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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