CVE-2026-77028

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: 0.4% (33rd percentile of EPSS-scored CVEs). 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
Trending — 3 sources updated this week
5.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.4%CVSS: 5.3Exploit: None knownExposed services: Not assessed

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

Joomla Extension - yootheme.com - Reflected XSS and open redirect via the submission redirect parameter in Zoo < 4.1.66

CVSS v3
5.3
EG Score
5.3MEDIUMmedium confidence
EG Risk
24
EG Risk 24/100CISA 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
Severity53% × 45%
Exploitation0% × 40%
Automatability0% × 15%
CISA SSVC: Track at every mission impact level.
Action: No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines, and watch the vendor's advisory for the fix.
EPSS PROB
0.4%
EPSS %ILE
33rd
KEV
Not listed

CISA SSVCTrack at every mission impact level.

No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines, and watch the vendor's advisory for the fix.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (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 21, 2026

Last Modified

August 26, 2026

Advisory Details (1)

Auto-updated Aug 21, 2026
No fix on record yet.
generic

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Vendor Advisories for CVE-2026-77028(1)

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

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 17× in last 7d / 74× 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 126 total refreshes for this CVE.

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

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Frequently asked(5)

What is CVE-2026-77028?
CVE-2026-77028 is a medium vulnerability published on August 21, 2026. Joomla Extension - yootheme.com - Reflected XSS and open redirect via the submission redirect parameter in Zoo < 4.1.66
When was CVE-2026-77028 disclosed?
CVE-2026-77028 was first published on August 21, 2026, with the most recent update on August 26, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-77028 actively exploited?
CVE-2026-77028 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.4% probability of exploitation in the next 30 days (33rd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-77028?
CVE-2026-77028 has a CVSS base score of 5.3 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-77028?
No fix for CVE-2026-77028 is confirmed yet. Until one is published, restrict network exposure of the affected system or apply the vendor's mitigation — for example, keep it off the internet or limit it to trusted networks — and watch the vendor's advisory for the fix. The vendor advisories EchelonGraph has for CVE-2026-77028 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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