CVE-2026-77997

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: 0.4% (31st 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
Trending — 3 sources updated this week
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: 0.4%CVSS: 5.1Exploit: 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 - Authenticated, privileged information disclosure in YOOtheme Pro 1.0.0-5.0.41 - A missing access check allowed users with com_template editing permissions to access information about arbitrary modules without the respective com_modules permissions.

CVSS v3
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 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 (value × EchelonGraph’s weight)
Severity51% × 45%
The EG Score, 5.1 of 10.
Exploitation0.4% × 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: 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
31st
KEV
Not listed

SSVC (CISA's decision table, applied by EchelonGraph)Track 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). 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.

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 25, 2026

Last Modified

September 23, 2026

Advisory Details (1)

Auto-updated Aug 25, 2026
No fix on record yet.
Web page

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Vendor Advisories for CVE-2026-77997(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 16× in last 7d / 73× 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 it from the CNA feed. An arrow marks a change the record states ("CVSS v3 → 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). Most recent first.

Showing the most recent 98 of 131 refreshes 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. 2 repeat rows among the latest 100 are merged into the row they repeat. The 33 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-14 16:33 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  2. 2026-10-13 16:35 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  3. 2026-10-12 16:35 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  4. 2026-10-12 15:37 UTCEG score recompute
  5. 2026-10-11 19:23 UTCEG score recompute
  6. 2026-10-11 16:39 UTCEG score recompute
  7. 2026-10-11 13:57 UTCEG score recompute
  8. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  9. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  10. 2026-10-10 12:15 UTCEG score recompute
  11. 2026-10-10 12:14 UTCGHSA enrichmentGHSA-84hx-8vrm-hqm7
  12. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  13. 2026-10-08 17:13 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  14. 2026-10-08 06:38 UTCEG score recompute
  15. 2026-10-08 06:38 UTCGHSA enrichmentGHSA-84hx-8vrm-hqm7
  16. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  17. 2026-10-07 04:36 UTCEG score recompute
  18. 2026-10-07 04:36 UTCGHSA enrichmentGHSA-84hx-8vrm-hqm7
  19. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  20. 2026-10-06 02:34 UTCEG score recompute
  21. 2026-10-06 02:34 UTCGHSA enrichmentGHSA-84hx-8vrm-hqm7
  22. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  23. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  24. 2026-10-04 19:50 UTCGHSA enrichmentGHSA-84hx-8vrm-hqm7
  25. 2026-10-03 16:27 UTCEG score recompute
Show 73 more
  1. 2026-10-03 16:27 UTCGHSA enrichmentGHSA-84hx-8vrm-hqm7
  2. 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  3. 2026-10-02 11:03 UTCEG score recompute
  4. 2026-10-02 11:03 UTCGHSA enrichmentGHSA-84hx-8vrm-hqm7
  5. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  6. 2026-10-01 08:50 UTCEG score recompute
  7. 2026-10-01 08:50 UTCGHSA enrichmentGHSA-84hx-8vrm-hqm7
  8. 2026-09-30 06:49 UTCEG score recompute
  9. 2026-09-30 06:49 UTCGHSA enrichmentGHSA-84hx-8vrm-hqm7
  10. 2026-09-29 15:24 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  11. 2026-09-29 02:10 UTCEG score recompute
  12. 2026-09-29 02:10 UTCGHSA enrichmentGHSA-84hx-8vrm-hqm7
  13. 2026-09-28 13:52 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  14. 2026-09-28 00:08 UTCEG score recompute
  15. 2026-09-28 00:08 UTCGHSA enrichmentGHSA-84hx-8vrm-hqm7
  16. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  17. 2026-09-26 22:07 UTCEG score recompute
  18. 2026-09-26 22:07 UTCGHSA enrichmentGHSA-84hx-8vrm-hqm7
  19. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  20. 2026-09-26 00:28 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  21. 2026-09-24 15:27 UTCEG score recompute
  22. 2026-09-24 15:27 UTCGHSA enrichmentGHSA-84hx-8vrm-hqm7
  23. 2026-09-24 14:04 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  24. 2026-09-23 17:54 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  25. 2026-09-23 13:19 UTCGHSA enrichmentGHSA-84hx-8vrm-hqm7
  26. 2026-09-23 07:18 UTCEG score recompute
  27. 2026-09-23 07:18 UTCGHSA enrichmentGHSA-84hx-8vrm-hqm7
  28. 2026-09-22 16:01 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  29. 2026-09-22 05:17 UTCEG score recompute
  30. 2026-09-22 05:17 UTCGHSA enrichmentGHSA-84hx-8vrm-hqm7
  31. 2026-09-21 21:09 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  32. 2026-09-21 03:14 UTCEG score recompute
  33. 2026-09-21 03:14 UTCGHSA enrichmentGHSA-84hx-8vrm-hqm7
  34. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  35. 2026-09-20 01:12 UTCEG score recompute
  36. 2026-09-20 01:12 UTCGHSA enrichmentGHSA-84hx-8vrm-hqm7
  37. 2026-09-18 23:11 UTCEG score recompute
  38. 2026-09-18 23:11 UTCGHSA enrichmentGHSA-84hx-8vrm-hqm7
  39. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  40. 2026-09-17 21:09 UTCEG score recompute
  41. 2026-09-17 21:09 UTCGHSA enrichmentGHSA-84hx-8vrm-hqm7
  42. 2026-09-16 15:42 UTCEG score recompute
  43. 2026-09-16 15:42 UTCGHSA enrichmentGHSA-84hx-8vrm-hqm7
  44. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  45. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  46. 2026-09-15 13:26 UTCEG score recompute
  47. 2026-09-15 13:26 UTCGHSA enrichmentGHSA-84hx-8vrm-hqm7
  48. 2026-09-15 03:12 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  49. 2026-09-14 11:24 UTCEG score recompute
  50. 2026-09-14 11:24 UTCGHSA enrichmentGHSA-84hx-8vrm-hqm7
  51. 2026-09-13 09:23 UTCEG score recompute
  52. 2026-09-13 09:23 UTCGHSA enrichmentGHSA-84hx-8vrm-hqm7
  53. 2026-09-12 07:21 UTCEG score recompute
  54. 2026-09-12 07:21 UTCGHSA enrichmentGHSA-84hx-8vrm-hqm7
  55. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  56. 2026-09-11 05:19 UTCEG score recompute
  57. 2026-09-11 05:19 UTCGHSA enrichmentGHSA-84hx-8vrm-hqm7
  58. 2026-09-10 09:35 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  59. 2026-09-10 03:17 UTCGHSA enrichmentGHSA-84hx-8vrm-hqm7
  60. 2026-09-09 01:16 UTCEG score recompute
  61. 2026-09-09 01:16 UTCGHSA enrichmentGHSA-84hx-8vrm-hqm7
  62. 2026-09-08 22:01 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  63. 2026-09-07 18:37 UTCEG score recompute
  64. 2026-09-07 18:37 UTCGHSA enrichmentGHSA-84hx-8vrm-hqm7
  65. 2026-09-06 16:36 UTCEG score recompute
  66. 2026-09-06 16:36 UTCGHSA enrichmentGHSA-84hx-8vrm-hqm7
  67. 2026-09-06 13:48 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  68. 2026-09-05 14:34 UTCEG score recompute
  69. 2026-09-05 14:33 UTCGHSA enrichmentGHSA-84hx-8vrm-hqm7
  70. 2026-09-04 12:31 UTCGHSA enrichmentGHSA-84hx-8vrm-hqm7
  71. 2026-09-03 10:29 UTCEG score recompute
  72. 2026-09-03 10:29 UTCGHSA enrichmentGHSA-84hx-8vrm-hqm7
  73. 2026-09-02 14:12 UTCEPSS rescoreEPSS 0.2% · 13th percentile

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-77997?
CVE-2026-77997 is a medium-severity vulnerability; its CVE record was published on August 25, 2026. Joomla Extension - yootheme.com - Authenticated, privileged information disclosure in YOOtheme Pro 1.0.0-5.0.41 - A missing access check allowed users with comtemplate editing permissions to access information about arbitrary modules without the respective commodules permissions.
When was the CVE record for CVE-2026-77997 published?
The CVE record for CVE-2026-77997 was published on August 25, 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 September 23, 2026; the record at its source may have been updated since.
Is CVE-2026-77997 actively exploited?
CVE-2026-77997 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.4% probability of exploitation in the next 30 days (31st percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-77997?
CVE-2026-77997 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-2026-77997?
No fix for CVE-2026-77997 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-2026-77997 are linked in the Vendor Advisories panel on this page.

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