Vulnerability details
CVE-2026-74786
scriban scriban
Scriban before 7.0.0 Denial of Service via Unbounded Template Output
CVSS 4.0
7.1High
Official 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.
CVSS scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 7.1High | 4.0 | CVEProject cvelistV5 (CNA) (VulnCheck) | 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 |
| 6.5Medium | 3.1 | CVEProject cvelistV5 (CNA) (VulnCheck) | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| scriban | scriban | v < 7.0.0 | CVEProject cvelistV5 (CNA) |
References and advisories
2
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Details
- Published
- 2026-08-16
- Last updated
- 2026-08-17
- State
- Published
- Assigner (CNA)
- VulnCheck
Exploit prediction (EPSS)
0.47%
Probability of exploitation in 30 days
41.3%
Percentile (among all CVEs)
SSVC assessment (CISA)
- Automatable
- No
- Exploitation
- Proof of concept
- Technical impact
- Partial
Weaknesses (CWE)
- CWE-770Allocation of Resources Without Limits or Throttling