CVE-2026-74786
Scriban before 7.0.0 Denial of Service via Unbounded Template Output
- State
- Published
- Severity
- 7.1 High
- Published
- Aug 16, 2026
- Updated
- Aug 17, 2026
- Reserved
- Aug 16, 2026
Description
Scriban before 7.0.0 (affected versions <= 6.6.0) contains a denial-of-service vulnerability in which the LimitToString safety limit (default 1MB) can be bypassed because ObjectToString resets the per-call length counter (_currentToStringLength) on every top-level call and StringBuilderOutput enforces no cumulative output-size limit. An attacker who can supply a template can render a near-limit string repeatedly in a loop, allocating approximately 1GB of memory and causing an out-of-memory condition that crashes the host application.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 7.1 High | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N | VulnCheck |
| 3.1 | 6.5 Medium | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H | VulnCheck |
Weaknesses
- CWE-770 Allocation of Resources Without Limits or Throttling
Affected Products
| Product | Versions |
|---|---|
scribanscriban |
|
References
- GitHub Security Advisory (GHSA-m2p3-hwv5-xpqw)vendor-advisory
- VulnCheck Advisory: Scriban before 7.0.0 Denial of Service via Unbounded Template Outputthird-party-advisory
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