CVE-2026-74788

HIGHPre-NVD 7.57.5—
EchelonGraph scoreHIGH confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-08-16. a secondary CVSS source baseline 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 sources updated this weekElevated
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.5Exploit: Elevated riskExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

Scriban before 7.0.0 (affected versions <= 6.6.0) contains an uncontrolled memory allocation vulnerability in the string.pad_left and string.pad_right template functions, which perform no validation on the width parameter before delegating to .NET's String.PadLeft/PadRight. When an application exposes Scriban to untrusted template input, an attacker can supply an arbitrarily large width value (e.g., 500,000,000) to trigger ~1GB memory allocations in a single call, resulting in OutOfMemoryException and denial of service. The TemplateContext.LimitToString limit does not prevent this because it is only enforced after the string has been fully allocated.

CVSS v3
7.5
EG Score
7.5(high)
EG Risk
65(Attend)
EG Risk 65/100SSVC: Attend

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity75% × 45%
Exploitation40% × 40%
Automatability100% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS PROB
0%
EPSS %ILE
20%
KEV
Not listed

Published

August 16, 2026

Last Modified

August 17, 2026

Advisory Details (2)

Auto-updated Aug 16, 2026
🔬 Proof of concept available. Patch available. Sources: github.
generic

Scriban before 7.0.0 Denial of Service via string.pad_left/pad_right | Advisories | VulnCheck

https://www.vulncheck.com/advisories/scriban-before-denial-of-service-via-string-pad-left-pad-right
github Patch Available🟡 PoC Available

Uncontrolled Memory Allocation via string.pad_left/pad_right Allows Remote Denial of Service · Advisory · scriban/scriban · GitHub

https://github.com/scriban/scriban/security/advisories/GHSA-v66j-x4hw-fv9g

Vendor Advisories for CVE-2026-74788(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Affected Packages

(2 across 1 ecosystem)
NuGet(2)
PackageVulnerable rangeFixed inDependents
Scriban0.1.0 ... 6.6.0 (123 versions)7.0.0—
Scriban.Signed0.10.0 ... 6.6.0 (111 versions)7.0.0—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 26× in last 7d / 26× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-08-21 09:14 UTCEG score recompute
  2. 2026-08-21 09:14 UTCGHSA enrichment
  3. 2026-08-20 22:56 UTCEPSS rescore
  4. 2026-08-20 20:42 UTCGHSA enrichment
  5. 2026-08-20 08:10 UTCGHSA enrichment
  6. 2026-08-19 19:38 UTCEG score recompute
  7. 2026-08-19 19:38 UTCGHSA enrichment
  8. 2026-08-19 17:04 UTCEPSS rescore
  9. 2026-08-19 07:05 UTCGHSA enrichment
  10. 2026-08-18 18:32 UTCEG score recompute
  11. 2026-08-18 18:32 UTCGHSA enrichment
  12. 2026-08-18 13:49 UTCEPSS rescore
  13. 2026-08-18 13:49 UTCEPSS rescore
  14. 2026-08-18 06:00 UTCGHSA enrichment
  15. 2026-08-17 17:28 UTCEG score recompute
  16. 2026-08-17 17:28 UTCGHSA enrichment
  17. 2026-08-17 17:00 UTCEG score recompute
  18. 2026-08-17 17:00 UTCGHSA enrichment
  19. 2026-08-17 15:40 UTCEG score recompute
  20. 2026-08-17 15:40 UTCGHSA enrichment
  21. 2026-08-17 13:47 UTCEPSS rescore
  22. 2026-08-17 03:08 UTCEG score recompute
  23. 2026-08-17 03:08 UTCGHSA enrichment
  24. 2026-08-16 14:36 UTCEG score recompute
  25. 2026-08-16 13:27 UTCEG score recompute
Show 1 more
  1. 2026-08-16 13:26 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-74788?
CVE-2026-74788 is a high vulnerability published on August 16, 2026. Scriban before 7.0.0 (affected versions <= 6.6.0) contains an uncontrolled memory allocation vulnerability in the string.padleft and string.padright template functions, which perform no validation on the width parameter before delegating to .NET's String.PadLeft/PadRight. When an application…
When was CVE-2026-74788 disclosed?
CVE-2026-74788 was first published in the National Vulnerability Database on August 16, 2026, with the most recent update on August 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-74788 actively exploited?
CVE-2026-74788 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 79.6% of all scored CVEs.
What is the CVSS score of CVE-2026-74788?
CVE-2026-74788 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-74788?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-74788, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-74788

Explore →

Is Your Infrastructure Affected by CVE-2026-74788?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs