Scriban before 7.2.0 Denial of Service via array.insert_at

published 2026-05-19 5 mo ago modified 2026-08-31 2 mo ago also GHSA-24c8-4792-22hx , EUVD-2026-59950

cvss: 8.7; version 4.0, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.4%; EPSS 0.4% chance of exploitation in 30 days, percentile 38%
public exploits: 0; none known

Scriban before 7.2.0 contains a denial of service vulnerability in the array.insert_at function that allocates unbounded null entries without respecting LoopLimit or LimitToString constraints. Attackers can supply a large index parameter to trigger OutOfMemoryException and crash the host process in under a second.

Patch / fix

fixed in 3

nuget scriban 7.2.0
nuget Scriban.Signed 7.2.0
scriban scriban 7.2.0

CISA SSVC

Exploitation: none
Automatable: yes
Technical impact: partial
Assessed: 2 mo ago (2026-08-17)

Exploit prediction

0.45% chance of exploitation in the next 30 days, higher than 38% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	4.0	8.7	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
CNA	4.0	8.7	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Affected packages

ecosystem	package	affected	fixed in
nuget	scriban	<7.2.0	7.2.0
nuget	Scriban.Signed	<7.2.0	7.2.0

Affected products

scriban scriban

Classification

Weakness

CWE-770 Allocation of Resources Without Limits or Throttling

References

github.com /scriban/scriban/security/advisories/GHSA-24c8-4792-22hx
vendor-advisory, web
vulncheck.com /advisories/scriban-before-denial-of-service-via-array-insert-at
third-party-advisory
github.com /scriban/scriban
package

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary