CVE-2026-79988 (GCVE-0-2026-79988)

Vulnerability from cvelistv5 – Published: 2026-08-27 15:36 – Updated: 2026-08-27 19:30
VLAI
Title
Authenticated RCE through Twig sandbox escape
Summary
The Twig sandbox mechanism in Craft CMS is configured to allow dangerous functionality from the Yii framework, leading to authenticated RCE similar to previously disclosed vulnerabilities.
Severity
8.7 (High)
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-27 19:30 UTC
CWE
  • CWE-693 - Protection Mechanism Failure
Assigner
References
URL Tags
https://www.hckrt.com/hacktivity/HCKRT-8RQQ7K third-party-advisorytechnical-descriptionmitigation
https://github.com/craftcms/cms/releases/tag/5.10.7 release-notes
https://github.com/craftcms/cms product
Impacted products
Vendor Product Version CPE status
craftcms cms Affected: 4.0.0-RC1 , < 4.18.3 (semver)
Affected: 5.0.0-RC1 , < 5.10.7 (semver)
    cpe:2.3:a:craftcms:cms:*:*:*:*:*:*:*:*
    cpe:2.3:a:craftcms:cms:*:*:*:*:*:*:*:*
Create a notification for this product.
Credits
Oskar Zeino-Mahmalat (@oskar-cure53) Hackrate
Show details on NVD website
To clipboard 

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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


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