CVE-2026-74783 json
Scriban 6.6.0 through 7.2.0 Parser Recursion Denial of Service
published 2026-06-26 4 mo ago modified 2026-09-30 39 d ago also GHSA-6q7j-xr26-3h2c , EUVD-2026-59949
- cvss
- 7.5
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 27%
- public exploits
- 0
- none known
Summary
Scriban versions 6.6.0 through 7.2.0 contain a non-enforcing ExpressionDepthLimit guard that fails to stop recursive descent parsing of deeply nested expressions. Attackers can supply templates with deeply nested parentheses, array initializers, object initializers, or unary operators to trigger an uncatchable StackOverflowException that immediately terminates the host process.
Patch / fix
- nuget Scriban 7.2.1
- nuget Scriban.Signed 7.2.1
CISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- yes
- Technical impact
- partial
- Assessed
- 2 mo ago
Exploit prediction
0.34% chance of exploitation in the next 30 days, higher than 27% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- github.com https://github.com/scriban/scriban/security/advisories/GHSA-6q7j-xr26-3h2c referenced PoC, tagged "exploit" by a source, unverified
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 | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| 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 | >=6.6.0, <7.2.1 |
7.2.1 |
| nuget | Scriban.Signed | >=6.6.0, <7.2.1 |
7.2.1 |
Affected products
- scriban scriban
Classification
- Weakness
-
- CWE-674 Uncontrolled Recursion
References
-
github.com
/scriban/scriban/security/advisories/GHSA-6q7j-xr26-3h2c
vendor-advisory, exploit, web
-
vulncheck.com
/advisories/scriban-through-parser-recursion-denial-of-service
third-party-advisory
-
github.com
/scriban/scriban
package
Sources
- CVE List CVE-2026-74783
- GitHub Advisory GHSA-6q7j-xr26-3h2c
- NVD CVE-2026-74783
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.