CVE-2026-79774

HIGHPre-NVD 8.48.4—
EchelonGraph scoreMEDIUM confidence

Score 8.4 from GitHub Security Advisory (severity: CRITICAL) published 2026-08-25. A secondary CVSS source baseline 8.4; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
8.4EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.8%CVSS: 8.4Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

Winter CMS versions before 1.2.13 contain an incomplete fix for a Twig sandbox escape vulnerability in System\\Twig\\SecurityPolicy that allows authenticated backend users with template-editing permissions to bypass sandbox restrictions. Attackers can exploit method forwarding through Eloquent models and query builders using methods like saveQuietly(), deleteQuietly(), increment(), decrement(), and newQuery() to read and modify arbitrary database records, execute arbitrary SQL, and achieve remote code execution by injecting PHP into template code sections.

CVSS v3
8.4
EG Score
8.4HIGHmedium confidence
EG Risk
38
EG Risk 38/100CISA 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
Severity84% × 45%
Exploitation1% × 40%
Automatability0% × 15%
CISA SSVC: Track at low or medium mission impact; Track* at high (mission-essential systems).
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.8%
EPSS %ILE
55th
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Track* at high (mission-essential systems).

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

Exploitation none (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 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 725bbcda2324 (wintercms/winter)

Patch available: wintercms/winter v1.2.13 (contains commit 725bbcda2324)

https://github.com/wintercms/winter/commit/725bbcda232466f7f71381c271c6916573d576e6
githubMentions a patch (unverified)

Authenticated Twig sandbox escape in CMS SecurityPolicy (bypass of CVE-2024-54149) · Advisory · wintercms/winter · GitHub

https://github.com/wintercms/winter/security/advisories/GHSA-8cfw-pcwh-v63w

Vendor Advisories for CVE-2026-79774(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-modulev1.2.10 ... v1.2.9 (6 versions)
  • 1.2.7 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 26× in last 7d / 109× 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 173 total refreshes for this CVE.

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

Related CVEs(same product + same CWE)

Same product

2 shown

Packagist:winter/wn-system-module

Frequently asked(5)

What is CVE-2026-79774?
CVE-2026-79774 is a high vulnerability published on August 25, 2026. Winter CMS versions before 1.2.13 contain an incomplete fix for a Twig sandbox escape vulnerability in System\\Twig\\SecurityPolicy that allows authenticated backend users with template-editing permissions to bypass sandbox restrictions. Attackers can exploit method forwarding through Eloquent…
When was CVE-2026-79774 disclosed?
CVE-2026-79774 was first published on August 25, 2026, with the most recent update on October 8, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-79774 actively exploited?
CVE-2026-79774 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.8% probability of exploitation in the next 30 days (55th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-79774?
CVE-2026-79774 has a CVSS base score of 8.4 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-79774?
A fix for CVE-2026-79774 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-79774 are linked in the Vendor Advisories panel on this page.

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