CVE-2026-74786

MEDIUMPre-NVD 6.56.5—
EchelonGraph scoreMEDIUM confidence

Score 6.5 from GitHub Security Advisory (severity: HIGH) published 2026-08-16. A secondary CVSS source baseline 6.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this weekElevated
6.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.5%CVSS: 6.5Exploit: Elevated riskExposed services: Not assessed

A fix is available — apply it.

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 v3
6.5
EG Score
6.5MEDIUMmedium confidence
EG Risk
45
EG Risk 45/100CISA SSVC

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
Severity65% × 45%
Exploitation40% × 40%
Automatability0% × 15%
CISA SSVC: Track at low or medium mission impact; Track* at high (mission-essential systems).
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.5%
EPSS %ILE
38th
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Track* at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines.

Exploitation public PoC (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

August 16, 2026

Last Modified

August 31, 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 Unbounded Template Output | Advisories | VulnCheck

https://www.vulncheck.com/advisories/scriban-before-denial-of-service-via-unbounded-template-output
github Patch Available🟡 PoC Available

Denial of Service via Unbounded Cumulative Template Output Bypassing LimitToString · Advisory · scriban/scriban · GitHub

https://github.com/scriban/scriban/security/advisories/GHSA-m2p3-hwv5-xpqw

Vendor Advisories for CVE-2026-74786(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 rangeFix by version rangeDependents
Scriban0.1.0 ... 6.6.0 (123 versions)
  • every version up to 7.0.0: fixed in 7.0.0
—
Scriban.Signed0.10.0 ... 6.6.0 (111 versions)
  • every version up to 7.0.0: fixed in 7.0.0
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 13× in last 7d / 73× 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.

Showing the most recent 100 of 135 total refreshes for this CVE.

  1. 2026-10-04 23:22 UTCEPSS rescore
  2. 2026-10-04 21:52 UTCGHSA enrichment
  3. 2026-10-03 19:25 UTCEG score recompute
  4. 2026-10-03 19:25 UTCGHSA enrichment
  5. 2026-10-03 14:26 UTCEPSS rescore
  6. 2026-10-02 15:48 UTCEG score recompute
  7. 2026-10-02 15:48 UTCGHSA enrichment
  8. 2026-10-01 19:50 UTCEPSS rescore
  9. 2026-10-01 12:30 UTCEG score recompute
  10. 2026-10-01 12:30 UTCGHSA enrichment
  11. 2026-09-30 12:00 UTCEG score recompute
  12. 2026-09-30 12:00 UTCGHSA enrichment
  13. 2026-09-29 15:24 UTCEPSS rescore
  14. 2026-09-28 13:52 UTCEPSS rescore
  15. 2026-09-28 08:43 UTCEG score recompute
  16. 2026-09-28 08:43 UTCGHSA enrichment
  17. 2026-09-27 13:48 UTCEPSS rescore
  18. 2026-09-27 08:21 UTCEG score recompute
  19. 2026-09-27 08:21 UTCGHSA enrichment
  20. 2026-09-26 15:59 UTCEPSS rescore
  21. 2026-09-26 00:28 UTCEPSS rescore
  22. 2026-09-25 11:54 UTCEG score recompute
  23. 2026-09-25 11:54 UTCGHSA enrichment
  24. 2026-09-24 14:04 UTCEPSS rescore
  25. 2026-09-24 11:30 UTCEG score recompute
Show 75 more
  1. 2026-09-24 11:30 UTCGHSA enrichment
  2. 2026-09-23 17:54 UTCEPSS rescore
  3. 2026-09-23 11:08 UTCEG score recompute
  4. 2026-09-23 11:08 UTCGHSA enrichment
  5. 2026-09-22 16:01 UTCEPSS rescore
  6. 2026-09-22 10:44 UTCEG score recompute
  7. 2026-09-22 10:44 UTCGHSA enrichment
  8. 2026-09-21 21:09 UTCEPSS rescore
  9. 2026-09-21 10:12 UTCEG score recompute
  10. 2026-09-21 10:12 UTCGHSA enrichment
  11. 2026-09-20 20:16 UTCEPSS rescore
  12. 2026-09-20 09:49 UTCEG score recompute
  13. 2026-09-20 09:49 UTCGHSA enrichment
  14. 2026-09-19 07:43 UTCEG score recompute
  15. 2026-09-19 07:43 UTCGHSA enrichment
  16. 2026-09-18 19:28 UTCEPSS rescore
  17. 2026-09-18 07:20 UTCEG score recompute
  18. 2026-09-18 07:20 UTCGHSA enrichment
  19. 2026-09-17 06:57 UTCEG score recompute
  20. 2026-09-17 06:57 UTCGHSA enrichment
  21. 2026-09-16 14:08 UTCEPSS rescore
  22. 2026-09-16 06:34 UTCEG score recompute
  23. 2026-09-16 06:34 UTCGHSA enrichment
  24. 2026-09-16 05:15 UTCEPSS rescore
  25. 2026-09-15 06:11 UTCEG score recompute
  26. 2026-09-15 06:11 UTCGHSA enrichment
  27. 2026-09-15 03:12 UTCEPSS rescore
  28. 2026-09-14 05:47 UTCEG score recompute
  29. 2026-09-14 05:47 UTCGHSA enrichment
  30. 2026-09-13 05:24 UTCEG score recompute
  31. 2026-09-13 05:24 UTCGHSA enrichment
  32. 2026-09-12 15:02 UTCEPSS rescore
  33. 2026-09-12 05:02 UTCEG score recompute
  34. 2026-09-12 05:02 UTCGHSA enrichment
  35. 2026-09-11 14:53 UTCEPSS rescore
  36. 2026-09-11 04:39 UTCEG score recompute
  37. 2026-09-11 04:39 UTCGHSA enrichment
  38. 2026-09-10 09:35 UTCEPSS rescore
  39. 2026-09-10 04:16 UTCGHSA enrichment
  40. 2026-09-09 03:46 UTCEG score recompute
  41. 2026-09-09 03:46 UTCGHSA enrichment
  42. 2026-09-08 22:01 UTCEPSS rescore
  43. 2026-09-08 01:31 UTCGHSA enrichment
  44. 2026-09-07 01:08 UTCEG score recompute
  45. 2026-09-07 01:08 UTCGHSA enrichment
  46. 2026-09-06 13:48 UTCEPSS rescore
  47. 2026-09-06 00:37 UTCEG score recompute
  48. 2026-09-06 00:37 UTCGHSA enrichment
  49. 2026-09-05 00:14 UTCEG score recompute
  50. 2026-09-05 00:14 UTCGHSA enrichment
  51. 2026-09-04 05:07 UTCEPSS rescore
  52. 2026-09-03 22:39 UTCGHSA enrichment
  53. 2026-09-02 22:15 UTCEG score recompute
  54. 2026-09-02 22:14 UTCGHSA enrichment
  55. 2026-09-02 14:12 UTCEPSS rescore
  56. 2026-09-01 20:56 UTCEG score recompute
  57. 2026-09-01 20:56 UTCGHSA enrichment
  58. 2026-09-01 13:54 UTCEPSS rescore
  59. 2026-09-01 04:40 UTCEPSS rescore
  60. 2026-09-01 04:40 UTCEPSS rescore
  61. 2026-08-31 20:33 UTCGHSA enrichment
  62. 2026-08-31 06:35 UTCEG score recompute
  63. 2026-08-31 06:35 UTCGHSA enrichment
  64. 2026-08-30 19:18 UTCEPSS rescore
  65. 2026-08-30 19:17 UTCEPSS rescore
  66. 2026-08-30 06:11 UTCEG score recompute
  67. 2026-08-30 06:11 UTCGHSA enrichment
  68. 2026-08-30 01:22 UTCEPSS rescore
  69. 2026-08-29 05:49 UTCEG score recompute
  70. 2026-08-29 05:48 UTCGHSA enrichment
  71. 2026-08-28 21:42 UTCEPSS rescore
  72. 2026-08-27 22:45 UTCEG score recompute
  73. 2026-08-27 22:45 UTCGHSA enrichment
  74. 2026-08-27 14:25 UTCEPSS rescore
  75. 2026-08-26 22:22 UTCEG score recompute

Related CVEs(same product + same CWE)

Frequently asked(5)

What is CVE-2026-74786?
CVE-2026-74786 is a medium vulnerability published on August 16, 2026. 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…
When was CVE-2026-74786 disclosed?
CVE-2026-74786 was first published on August 16, 2026, with the most recent update on August 31, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-74786 actively exploited?
CVE-2026-74786 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.5% probability of exploitation in the next 30 days (38th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-74786?
CVE-2026-74786 has a CVSS base score of 6.5 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-74786?
A fix for CVE-2026-74786 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-74786 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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