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  4. CVE 2026 74783 scriban 660 through 720 parser recursion denial
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Back to active CVEs
High · CVSS 8.7CVE-2026-74783

Scriban 6.6.0 through 7.2.0 Parser Recursion Denial of ServiceCVE-2026-74783

Answer in brief

CVE-2026-74783 records a High severity (CVSS 8.7) vulnerability in Scriban 6.6.0 through 7.2.0 Parser Recursion Denial of Service. The current sources do not mark it as known exploited. The current feed maps scriban/scriban (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Aug 16, 2026Updated Sep 30, 2026Source checked Nov 14, 2026First seen by HOL Aug 16, 2026Material review Sep 30, 2026
Upstream Advisory

Key facts

Risk
High · CVSS 8.7
Exploitation
Not marked as known exploited
Affected software
1 mapped package or product
Fix availability
Not reported

Why this deserves its current priority

CVSS is 8.7. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps scriban/scriban (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
scriban/scribangeneric>=6.6.0 <=7.2.0Not reported

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for scriban/scriban.
  2. 2Review the reported fix. Monitor this advisory for an available fix and review any installs of the affected package.

Evidence timeline and material changes

  1. Published upstream

    Aug 16, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Sep 30, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Aug 16, 2026

Sources and claim methodology

  • GitHub security advisorygithub.com
  • Source referencevulncheck.com
Upstream source description

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.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • JSON::XS versions before 4.05 for Perl allow stack exhaustion via nested tagged values under allow_tags in decode_tagAlso CWE-674

Record context

Vulnerability class
Vulnerability
EPSS
Not reported
CWE IDs
CWE-674
Source
CVE List V5
Source checked
Nov 14, 2026
References
2 linked sources
Open source record