CVE-2026-79990

HIGHPre-NVD 8.78.7—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 8.7 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.3%, top 82% of all CVEs by exploit prediction. 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
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%CVSS: 8.7Exploit: None knownExposed: 0

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

Craft CMS GraphQL entry mutation resolvers (saveEntry, deleteEntry) read siteIddirectly from$argumentswithout passing throughArgumentManagerprepareArguments(), which is the function that enforces site-scope filtering via array_intersect against the GraphQL schema’s allowed sites. The query path (ElementResolverprepareElementQuery) correctly calls prepareArguments()`, so queries to unauthorized sites return empty. But mutations bypass this entirely — an attacker with a token scoped to Site A can create, modify, or delete entries in Site B by passing siteId in the mutations argument.

CVSS v3
8.7
EG Score
8.7(medium)
EG Risk
39(Track)
EG Risk 39/100SSVC: Track

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%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
18%
KEV
Not listed

Published

September 2, 2026

Last Modified

September 3, 2026

Advisory Details (4)

Auto-updated Sep 2, 2026
Patch available. Sources: github_release, github.
github Patch Available

GQL entry mutation siteId bypasses schema site scope, enabling cross-site content read/write/delete · Advisory · craftcms/cms · GitHub

https://github.com/craftcms/cms/security/advisories/GHSA-3wcr-p33w-528f
generic

GitHub - craftcms/cms: Build bespoke content experiences with Craft. · GitHub

https://github.com/craftcms/cms
github_release Patch Available

5.10.11

Patch available: craftcms/cms 5.10.11

https://github.com/craftcms/cms/releases/tag/5.10.11
generic

GQL entry mutation siteId bypasses schema site scope | Hackrate

https://www.hckrt.com/hacktivity/HCKRT-XEQKMX

Vendor Advisories for CVE-2026-79990(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 25× in last 7d / 67× 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.

  1. 2026-09-21 03:38 UTCEG score recompute
  2. 2026-09-21 03:38 UTCGHSA enrichment
  3. 2026-09-20 20:16 UTCEPSS rescore
  4. 2026-09-20 14:28 UTCGHSA enrichment
  5. 2026-09-20 01:18 UTCEG score recompute
  6. 2026-09-20 01:18 UTCGHSA enrichment
  7. 2026-09-19 12:08 UTCGHSA enrichment
  8. 2026-09-18 22:57 UTCEG score recompute
  9. 2026-09-18 22:57 UTCGHSA enrichment
  10. 2026-09-18 19:28 UTCEPSS rescore
  11. 2026-09-18 09:48 UTCGHSA enrichment
  12. 2026-09-17 20:38 UTCEG score recompute
  13. 2026-09-17 20:38 UTCGHSA enrichment
  14. 2026-09-17 05:07 UTCGHSA enrichment
  15. 2026-09-16 15:57 UTCEG score recompute
  16. 2026-09-16 15:57 UTCGHSA enrichment
  17. 2026-09-16 14:08 UTCEPSS rescore
  18. 2026-09-16 05:15 UTCEPSS rescore
  19. 2026-09-16 02:47 UTCGHSA enrichment
  20. 2026-09-15 13:37 UTCEG score recompute
  21. 2026-09-15 13:37 UTCGHSA enrichment
  22. 2026-09-15 03:12 UTCEPSS rescore
  23. 2026-09-15 03:12 UTCEPSS rescore
  24. 2026-09-15 00:27 UTCGHSA enrichment
  25. 2026-09-14 11:17 UTCGHSA enrichment
Show 42 more
  1. 2026-09-13 22:07 UTCEG score recompute
  2. 2026-09-13 22:07 UTCGHSA enrichment
  3. 2026-09-13 08:56 UTCGHSA enrichment
  4. 2026-09-12 19:47 UTCEG score recompute
  5. 2026-09-12 19:47 UTCGHSA enrichment
  6. 2026-09-12 06:37 UTCGHSA enrichment
  7. 2026-09-11 17:26 UTCEG score recompute
  8. 2026-09-11 17:26 UTCGHSA enrichment
  9. 2026-09-11 14:53 UTCEPSS rescore
  10. 2026-09-11 14:53 UTCEPSS rescore
  11. 2026-09-11 03:53 UTCGHSA enrichment
  12. 2026-09-10 14:43 UTCEG score recompute
  13. 2026-09-10 14:43 UTCGHSA enrichment
  14. 2026-09-10 01:33 UTCGHSA enrichment
  15. 2026-09-09 12:23 UTCGHSA enrichment
  16. 2026-09-08 23:13 UTCEG score recompute
  17. 2026-09-08 23:13 UTCGHSA enrichment
  18. 2026-09-08 22:01 UTCEPSS rescore
  19. 2026-09-08 04:02 UTCEG score recompute
  20. 2026-09-08 04:02 UTCGHSA enrichment
  21. 2026-09-07 14:52 UTCGHSA enrichment
  22. 2026-09-07 01:14 UTCEG score recompute
  23. 2026-09-07 01:14 UTCGHSA enrichment
  24. 2026-09-06 13:48 UTCEPSS rescore
  25. 2026-09-06 12:00 UTCGHSA enrichment
  26. 2026-09-05 22:50 UTCEG score recompute
  27. 2026-09-05 22:50 UTCGHSA enrichment
  28. 2026-09-05 09:41 UTCGHSA enrichment
  29. 2026-09-04 20:30 UTCEG score recompute
  30. 2026-09-04 20:30 UTCGHSA enrichment
  31. 2026-09-04 07:12 UTCEG score recompute
  32. 2026-09-04 07:12 UTCGHSA enrichment
  33. 2026-09-04 05:07 UTCEPSS rescore
  34. 2026-09-03 18:01 UTCGHSA enrichment
  35. 2026-09-03 07:53 UTCGHSA enrichment
  36. 2026-09-02 18:37 UTCEG score recompute
  37. 2026-09-02 18:37 UTCGHSA enrichment
  38. 2026-09-02 18:06 UTCEG score recompute
  39. 2026-09-02 18:06 UTCGHSA enrichment
  40. 2026-09-02 15:31 UTCEG score recompute
  41. 2026-09-02 14:30 UTCEG score recompute
  42. 2026-09-02 14:26 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-79990?
CVE-2026-79990 is a high vulnerability published on September 2, 2026. Craft CMS GraphQL entry mutation resolvers (saveEntry, deleteEntry) read siteIddirectly from$argumentswithout passing throughArgumentManagerprepareArguments(), which is the function that enforces site-scope filtering via array_intersect against the GraphQL schema’s allowed sites. The query path…
When was CVE-2026-79990 disclosed?
CVE-2026-79990 was first published in the National Vulnerability Database on September 2, 2026, with the most recent update on September 3, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-79990 actively exploited?
CVE-2026-79990 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 82.2% of all scored CVEs.
What is the CVSS score of CVE-2026-79990?
CVE-2026-79990 has a CVSS v3 base score of 8.7 (NVD).
How do I remediate CVE-2026-79990?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-79990, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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