CVE-2026-75828

HIGHPre-NVD 8.78.7—
EchelonGraph scoreMEDIUM confidence

Score 8.7 from GitHub Security Advisory (severity: CRITICAL) published 2026-08-18. A secondary CVSS source baseline 8.7; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Elevated
8.7EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.4%CVSS: 8.7Exploit: Elevated riskExposed services: Not assessed

A fix is available — apply it.

Grav before 2.0.15 contains a stored cross-site scripting vulnerability in the detectXss() function where unpaired quotes in unquoted attribute values bypass event-handler detection. Authenticated editors can inject event handlers like onerror= that pass validation and execute in visitor browsers when page content is rendered.

CVSS v3
8.7
EG Score
8.7HIGHmedium confidence
EG Risk
55
EG Risk 55/100CISA SSVC

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
Severity87% × 45%
Exploitation40% × 40%
Automatability0% × 15%
CISA SSVC: Track at low, Track* at medium and Attend at high mission impact.
Action: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
EPSS PROB
0.4%
EPSS %ILE
30th
KEV
Not listed

CISA SSVCTrack at low, Track* at medium and Attend at high mission impact.

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation public PoC (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

August 18, 2026

Last Modified

September 8, 2026

Advisory Details (2)

Auto-updated Aug 18, 2026
Patch available. Sources: github.
generic

Grav before 2.0.15 Stored XSS via detectXss() Quote Bypass | Advisories | VulnCheck

https://www.vulncheck.com/advisories/grav-before-stored-xss-via-detectxss-quote-bypass
github Patch Available

detectXss() misses an event-handler attribute after an unpaired quote in an unquoted attribute value, giving stored XSS · Advisory · getgrav/grav · GitHub

https://github.com/getgrav/grav/security/advisories/GHSA-vfmf-q6x9-cw96

Vendor Advisories for CVE-2026-75828(1)

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

Affected Packages

(1 across 1 ecosystem)
Packagist(1)
PackageVulnerable rangeFix by version rangeDependents
getgrav/grav0.8.0 ... 2.0.9 (349 versions)
  • every version up to 2.0.15: fixed in 2.0.15
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 9× in last 7d / 68× 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 141 total refreshes for this CVE.

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

Related CVEs(same product + same CWE)

Frequently asked(5)

What is CVE-2026-75828?
CVE-2026-75828 is a high vulnerability published on August 18, 2026. Grav before 2.0.15 contains a stored cross-site scripting vulnerability in the detectXss() function where unpaired quotes in unquoted attribute values bypass event-handler detection. Authenticated editors can inject event handlers like onerror= that pass validation and execute in visitor browsers…
When was CVE-2026-75828 disclosed?
CVE-2026-75828 was first published on August 18, 2026, with the most recent update on September 8, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-75828 actively exploited?
CVE-2026-75828 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.4% probability of exploitation in the next 30 days (30th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-75828?
CVE-2026-75828 has a CVSS base score of 8.7 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-75828?
A fix for CVE-2026-75828 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-75828 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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