CVE-2026-79773

MEDIUMPre-NVD 4.94.9
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to the CVSS score beside it.

Score 4.9 from GitHub Security Advisory published 2026-08-25. A secondary CVSS source baseline 4.9; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, a secondary CVSS source
Trending — 3 sources updated this week
4.9EG
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: 0.5%CVSS: 4.9Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

Winter CMS before 1.2.13 contains a local file inclusion vulnerability in the JavascriptImporter filter that allows authenticated users with cms.manage_assets permission to disclose arbitrary server-readable files by placing =include or =require directives in theme JavaScript assets. Attackers can reference files like .env outside the theme directory, and the combined output served through the combine route becomes readable by unauthenticated visitors, exposing application keys and database credentials.

CVSS v3
4.9
EG Score
4.9MEDIUMmedium confidence
EG Risk
22
EG Risk 22/100

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)
Severity49% × 45%
The EG Score, 4.9 of 10.
Exploitation0.5% × 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: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.5%
EPSS %ILE
40th
KEV
Not listed

SSVC (CISA's decision table, applied by EchelonGraph)Track at every mission impact level.

A fix is available. Apply it within your standard update timelines.

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

October 8, 2026

Advisory Details (2)

Auto-updated Aug 25, 2026
Patch available. Sources: github, github_commit.
GitHub commit Patch Available

commit e09c8d3526f3 (wintercms/winter)

Patch available: wintercms/winter v1.2.13 (contains commit e09c8d3526f3)

https://github.com/wintercms/winter/commit/e09c8d3526f3583cb6c3476a021b885088ecd4bd
GitHub advisoryMentions a patch (unverified)

Local File Inclusion through =include directives in JavaScript asset compilation · Advisory · wintercms/winter · GitHub

https://github.com/wintercms/winter/security/advisories/GHSA-2223-f22x-24cq

Vendor Advisories for CVE-2026-79773(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
winter/wn-system-modulev1.0.473 ... v1.2.9 (26 versions)
  • every version up to 1.2.13: fixed in 1.2.13
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 20× in last 7d / 85× 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 146 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 48 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 0.5% · 40th percentile
  2. 2026-10-13 16:35 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  3. 2026-10-12 16:35 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  4. 2026-10-12 14:58 UTCEG score recompute
  5. 2026-10-11 19:22 UTCEG score recompute
  6. 2026-10-11 16:38 UTCEG score recompute
  7. 2026-10-11 13:56 UTCEG score recompute
  8. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  9. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  10. 2026-10-10 12:02 UTCEG score recompute
  11. 2026-10-10 12:02 UTCGHSA enrichmentGHSA-gqr6-9g7c-7g7r · GitHub CVSS 4.9
  12. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  13. 2026-10-08 17:13 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  14. 2026-10-08 16:35 UTCEG score recompute
  15. 2026-10-08 16:35 UTCGHSA enrichmentGHSA-gqr6-9g7c-7g7r · GitHub CVSS 4.9
  16. 2026-10-08 15:41 UTCEG score recompute
  17. 2026-10-08 15:41 UTCGHSA enrichmentGHSA-gqr6-9g7c-7g7r · GitHub CVSS 4.9
  18. 2026-10-08 03:17 UTCEG score recompute
  19. 2026-10-08 03:17 UTCGHSA enrichmentGHSA-gqr6-9g7c-7g7r · GitHub CVSS 4.9
  20. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  21. 2026-10-07 01:10 UTCEG score recompute
  22. 2026-10-07 01:10 UTCGHSA enrichmentGHSA-gqr6-9g7c-7g7r · GitHub CVSS 4.9
  23. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  24. 2026-10-06 02:33 UTCEG score recompute
  25. 2026-10-06 02:33 UTCGHSA enrichmentGHSA-gqr6-9g7c-7g7r · GitHub CVSS 4.9
Show 73 more
  1. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  2. 2026-10-05 01:25 UTCEG score recompute
  3. 2026-10-05 01:25 UTCGHSA enrichmentGHSA-gqr6-9g7c-7g7r · GitHub CVSS 4.9
  4. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  5. 2026-10-04 02:13 UTCEG score recompute
  6. 2026-10-04 02:13 UTCGHSA enrichmentGHSA-gqr6-9g7c-7g7r · GitHub CVSS 4.9
  7. 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  8. 2026-10-03 01:43 UTCEG score recompute
  9. 2026-10-03 01:43 UTCGHSA enrichmentGHSA-gqr6-9g7c-7g7r · GitHub CVSS 4.9
  10. 2026-10-02 17:57 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  11. 2026-10-02 03:40 UTCEG score recompute
  12. 2026-10-02 03:40 UTCGHSA enrichmentGHSA-gqr6-9g7c-7g7r · GitHub CVSS 4.9
  13. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  14. 2026-10-01 05:36 UTCEG score recompute
  15. 2026-10-01 05:36 UTCGHSA enrichmentGHSA-gqr6-9g7c-7g7r · GitHub CVSS 4.9
  16. 2026-09-30 06:47 UTCEG score recompute
  17. 2026-09-30 06:47 UTCGHSA enrichmentGHSA-gqr6-9g7c-7g7r · GitHub CVSS 4.9
  18. 2026-09-29 15:24 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  19. 2026-09-28 21:30 UTCEG score recompute
  20. 2026-09-28 21:30 UTCGHSA enrichmentGHSA-gqr6-9g7c-7g7r · GitHub CVSS 4.9
  21. 2026-09-28 13:52 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  22. 2026-09-27 20:08 UTCEG score recompute
  23. 2026-09-27 20:08 UTCGHSA enrichmentGHSA-gqr6-9g7c-7g7r · GitHub CVSS 4.9
  24. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  25. 2026-09-26 22:05 UTCEG score recompute
  26. 2026-09-26 22:05 UTCGHSA enrichmentGHSA-gqr6-9g7c-7g7r · GitHub CVSS 4.9
  27. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  28. 2026-09-26 00:28 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  29. 2026-09-25 16:54 UTCGHSA enrichmentGHSA-gqr6-9g7c-7g7r · GitHub CVSS 4.9
  30. 2026-09-24 18:51 UTCEG score recompute
  31. 2026-09-24 18:51 UTCGHSA enrichmentGHSA-gqr6-9g7c-7g7r · GitHub CVSS 4.9
  32. 2026-09-24 14:04 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  33. 2026-09-23 19:57 UTCEG score recompute
  34. 2026-09-23 19:57 UTCGHSA enrichmentGHSA-gqr6-9g7c-7g7r · GitHub CVSS 4.9
  35. 2026-09-23 17:54 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  36. 2026-09-22 21:10 UTCEG score recompute
  37. 2026-09-22 21:10 UTCGHSA enrichmentGHSA-gqr6-9g7c-7g7r · GitHub CVSS 4.9
  38. 2026-09-22 16:01 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  39. 2026-09-21 23:07 UTCEG score recompute
  40. 2026-09-21 23:07 UTCGHSA enrichmentGHSA-gqr6-9g7c-7g7r · GitHub CVSS 4.9
  41. 2026-09-21 21:09 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  42. 2026-09-21 01:03 UTCEG score recompute
  43. 2026-09-21 01:03 UTCGHSA enrichmentGHSA-gqr6-9g7c-7g7r · GitHub CVSS 4.9
  44. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  45. 2026-09-20 02:57 UTCEG score recompute
  46. 2026-09-20 02:56 UTCGHSA enrichmentGHSA-gqr6-9g7c-7g7r · GitHub CVSS 4.9
  47. 2026-09-19 04:53 UTCEG score recompute
  48. 2026-09-19 04:53 UTCGHSA enrichmentGHSA-gqr6-9g7c-7g7r · GitHub CVSS 4.9
  49. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  50. 2026-09-18 06:51 UTCEG score recompute
  51. 2026-09-18 06:51 UTCGHSA enrichmentGHSA-gqr6-9g7c-7g7r · GitHub CVSS 4.9
  52. 2026-09-17 08:48 UTCEG score recompute
  53. 2026-09-17 08:48 UTCGHSA enrichmentGHSA-gqr6-9g7c-7g7r · GitHub CVSS 4.9
  54. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  55. 2026-09-16 10:45 UTCEG score recompute
  56. 2026-09-16 10:45 UTCGHSA enrichmentGHSA-gqr6-9g7c-7g7r · GitHub CVSS 4.9
  57. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  58. 2026-09-15 12:42 UTCEG score recompute
  59. 2026-09-15 12:42 UTCGHSA enrichmentGHSA-gqr6-9g7c-7g7r · GitHub CVSS 4.9
  60. 2026-09-15 03:12 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  61. 2026-09-14 14:34 UTCEG score recompute
  62. 2026-09-14 14:34 UTCGHSA enrichmentGHSA-gqr6-9g7c-7g7r · GitHub CVSS 4.9
  63. 2026-09-13 16:30 UTCGHSA enrichmentGHSA-gqr6-9g7c-7g7r · GitHub CVSS 4.9
  64. 2026-09-12 18:27 UTCEG score recompute
  65. 2026-09-12 18:27 UTCGHSA enrichmentGHSA-gqr6-9g7c-7g7r · GitHub CVSS 4.9
  66. 2026-09-11 20:24 UTCEG score recompute
  67. 2026-09-11 20:24 UTCGHSA enrichmentGHSA-gqr6-9g7c-7g7r · GitHub CVSS 4.9
  68. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  69. 2026-09-10 22:21 UTCEG score recompute
  70. 2026-09-10 22:21 UTCGHSA enrichmentGHSA-gqr6-9g7c-7g7r · GitHub CVSS 4.9
  71. 2026-09-10 00:17 UTCGHSA enrichmentGHSA-gqr6-9g7c-7g7r · GitHub CVSS 4.9
  72. 2026-09-09 01:14 UTCEG score recompute
  73. 2026-09-09 01:14 UTCGHSA enrichmentGHSA-gqr6-9g7c-7g7r · GitHub CVSS 4.9

Related CVEs(same product + same CWE)

Same product

2 shown

Packagist:winter/wn-system-module

Frequently asked(5)

What is CVE-2026-79773?
CVE-2026-79773 is a medium-severity vulnerability; its CVE record was published on August 25, 2026. Winter CMS before 1.2.13 contains a local file inclusion vulnerability in the JavascriptImporter filter that allows authenticated users with cms.manage_assets permission to disclose arbitrary server-readable files by placing =include or =require directives in theme JavaScript assets. Attackers can…
When was CVE-2026-79773 made public?
CVE-2026-79773 was made public on August 7, 2026: that is the date its CVE record's CNA, VulnCheck, gives for when the vulnerability was made public. The CVE record itself was published on August 25, 2026. EchelonGraph's copy of the record carries a last-modified date of October 8, 2026; the record at its source may have been updated since.
Is CVE-2026-79773 actively exploited?
CVE-2026-79773 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.5% probability of exploitation in the next 30 days (40th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-79773?
CVE-2026-79773 has a CVSS base score of 4.9 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-79773?
A fix for CVE-2026-79773 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-79773 are linked in the Vendor Advisories panel on this page.

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