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TI-2026-52558 Aliases CVE-2026-74794GHSA-pprh-wgqr-2mmx

Scriban before 6.6.0 Denial of Service via Infinite Recursion

Priority HIGH 77CWE-674Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-674.

Summary

Scriban before 6.6.0 contains an infinite recursion vulnerability in object rendering when the ObjectRecursionLimit property defaults to unlimited. Attackers can supply circular reference objects to the template context, exhausting stack space and triggering an uncatchable StackOverflowException that terminates the hosting process.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00488 42nd percentileScored 2026-11-07
Fix Fixed scriban (scriban): 6.6.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
scribanscribanbefore 6.6.06.6.0Patch availableCNA
  • scriban Vendorscriban Affected before 6.6.0 Fixed in 6.6.0 Patch available CNA

Remediation

  • Fix · CNA scriban (scriban) Fixed in 6.6.0

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    scriban 6.6.0

    2 records Highest priority Priority HIGH 1 HIGH, 1 MEDIUM

    Other records, highest priority first

    • TI-2026-52559 Scriban before 6.6.0 Denial of Service via Uncontrolled RecursionPriority MEDIUM 44
    Show all 2 records →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-74794
  2. 2026-10-03 Alias added: GHSA-pprh-wgqr-2mmx

References

Advisory 1

  • TI-2026-52554 Scriban before 7.0.0 MemberFilter Bypass via TemplateContext Cache CVSS 4.0CRITICAL 9.3
  • TI-2026-51270 Scriban before 7.2.2 Arbitrary Property Write via TypedObjectAccessor CVSS 4.0CRITICAL 9.3
  • TI-2026-52555 Scriban before 7.0.0 Authorization Bypass via Stale Include Cache CVSS 4.0CRITICAL 9.2
  • TI-2026-52556 Scriban before 7.0.0 Stack Overflow via nested array initializers CVSS 4.0HIGH 8.7
  • TI-2026-52552 Scriban before 7.0.0 Denial of Service via string.pad_left/pad_right CVSS 4.0HIGH 8.7
  • TI-2026-52551 Scriban before 7.0.0 Uncontrolled Recursion via object.to_json CVSS 4.0HIGH 8.7
See all 14 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences