CVE-2026-26226

MEDIUMPre-NVD 5.35.3—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 5.3 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.5%, top 60% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, secondary
Elevated
5.3
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 1%CVSS: 5.3Exploit: NoneExposed: 0

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

beautiful-mermaid versions prior to 0.1.3 contain an SVG attribute injection issue that can lead to cross-site scripting (XSS) when rendering attacker-controlled Mermaid diagrams. User-controlled values from Mermaid style and classDef directives are interpolated into SVG attribute values without proper escaping, allowing crafted input to break out of an attribute context and inject arbitrary SVG elements/attributes into the rendered output. When the generated SVG is embedded in a web page, this can result in script execution in the context of the embedding origin.

CVSS v3
5.3
EG Score
5.3(medium)
EG Risk
40(Track)
EG Risk 40/100SSVC: 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
Severity53% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS
40.2%
KEV
Not listed

Published

February 13, 2026

Last Modified

July 14, 2026

Advisory Details (4)

Auto-updated Jul 19, 2026
Patch available. Sources: github_release, github_pr.
generic

beautiful-mermaid < 0.1.3 SVG Attribute Injection | Advisories | VulnCheck

https://www.vulncheck.com/advisories/beautiful-mermaid-svg-attribute-injection
generic

Security code review task | Neo

https://neo.projectdiscovery.io/share/cec71dc7-a8eb-417e-b8b4-666644796c1e
github_release Patch Available

v0.1.3

Patch available: lukilabs/beautiful-mermaid v0.1.3

https://github.com/lukilabs/beautiful-mermaid/releases/tag/v0.1.3
github_pr Patch Available

security: escape inline style values to prevent SVG attribute injection

Patch available: lukilabs/beautiful-mermaid v0.1.3 (PR #8 merged 2026-01-29)

https://github.com/lukilabs/beautiful-mermaid/pull/8

Affected Packages

(1 across 1 ecosystem)
npm(1)
PackageVulnerable rangeFixed inDependents
beautiful-mermaid—0.1.3—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 15× in last 7d / 52× 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 124 total refreshes for this CVE.

  1. 2026-07-24 14:17 UTCEPSS rescore
  2. 2026-07-23 14:18 UTCEPSS rescore
  3. 2026-07-23 14:18 UTCEPSS rescore
  4. 2026-07-23 03:07 UTCEG score recompute
  5. 2026-07-22 14:08 UTCEPSS rescore
  6. 2026-07-22 14:08 UTCEPSS rescore
  7. 2026-07-21 15:24 UTCEPSS rescore
  8. 2026-07-21 15:24 UTCEPSS rescore
  9. 2026-07-20 17:08 UTCEPSS rescore
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  11. 2026-07-19 14:31 UTCEPSS rescore
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  13. 2026-07-19 02:29 UTCEPSS rescore
  14. 2026-07-18 10:04 UTCEPSS rescore
  15. 2026-07-18 10:04 UTCEPSS rescore
  16. 2026-07-17 14:59 UTCOSV refresh
  17. 2026-07-16 17:03 UTCEPSS rescore
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  1. 2026-07-12 05:46 UTCEPSS rescore
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  3. 2026-07-11 08:27 UTCEPSS rescore
  4. 2026-07-09 19:10 UTCEPSS rescore
  5. 2026-07-08 15:15 UTCEPSS rescore
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  7. 2026-07-07 13:46 UTCEPSS rescore
  8. 2026-07-06 16:27 UTCEPSS rescore
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  10. 2026-07-06 02:23 UTCEPSS rescore
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  17. 2026-06-30 23:22 UTCEPSS rescore
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  19. 2026-06-29 14:06 UTCEPSS rescore
  20. 2026-06-29 13:02 UTCOSV refresh
  21. 2026-06-28 14:07 UTCEPSS rescore
  22. 2026-06-28 14:07 UTCEPSS rescore
  23. 2026-06-28 04:56 UTCEPSS rescore
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  25. 2026-06-27 03:08 UTCEPSS rescore
  26. 2026-06-25 13:49 UTCEPSS rescore
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  28. 2026-06-24 14:05 UTCEPSS rescore
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  30. 2026-06-23 21:33 UTCEPSS rescore
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  32. 2026-06-22 14:25 UTCEPSS rescore
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  34. 2026-06-21 14:56 UTCEPSS rescore
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  36. 2026-06-21 01:59 UTCEPSS rescore
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  38. 2026-06-19 19:25 UTCEPSS rescore
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  40. 2026-06-18 17:52 UTCEPSS rescore
  41. 2026-06-17 17:53 UTCEPSS rescore
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  43. 2026-06-16 17:52 UTCEPSS rescore
  44. 2026-06-15 17:48 UTCEPSS rescore
  45. 2026-06-14 23:18 UTCEPSS rescore
  46. 2026-06-13 23:00 UTCEPSS rescore
  47. 2026-06-12 23:12 UTCEPSS rescore
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  49. 2026-06-11 14:00 UTCEPSS rescore
  50. 2026-06-10 22:18 UTCEPSS rescore
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  52. 2026-06-10 13:22 UTCEPSS rescore
  53. 2026-06-08 14:17 UTCEPSS rescore
  54. 2026-06-08 14:17 UTCEPSS rescore
  55. 2026-06-07 19:16 UTCEG score recompute▲ 5.30
  56. 2026-06-07 15:25 UTCEPSS rescore
  57. 2026-06-07 15:25 UTCEPSS rescore
  58. 2026-06-07 15:25 UTCEPSS rescore
  59. 2026-06-06 13:47 UTCEPSS rescore
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  61. 2026-06-05 22:47 UTCEPSS rescore
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  63. 2026-06-05 06:10 UTCEPSS rescore
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  65. 2026-06-04 13:12 UTCEPSS rescore
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  67. 2026-06-02 20:13 UTCEPSS rescore
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  69. 2026-06-01 13:51 UTCEPSS rescore
  70. 2026-06-01 13:51 UTCEPSS rescore
  71. 2026-06-01 13:49 UTCOSV refresh
  72. 2026-05-31 22:30 UTCEPSS rescore
  73. 2026-05-31 22:30 UTCEPSS rescore
  74. 2026-05-31 00:16 UTCEPSS rescore
  75. 2026-05-31 00:16 UTCEPSS rescore

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-26226?
CVE-2026-26226 is a medium vulnerability published on February 13, 2026. beautiful-mermaid versions prior to 0.1.3 contain an SVG attribute injection issue that can lead to cross-site scripting (XSS) when rendering attacker-controlled Mermaid diagrams. User-controlled values from Mermaid style and classDef directives are interpolated into SVG attribute values without…
When was CVE-2026-26226 disclosed?
CVE-2026-26226 was first published in the National Vulnerability Database on February 13, 2026, with the most recent update on July 14, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-26226 actively exploited?
CVE-2026-26226 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 40.2% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-26226?
CVE-2026-26226 has a CVSS v3 base score of 5.3 (NVD).
How do I remediate CVE-2026-26226?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-26226, 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.

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