CVE-2026-71291

HIGHPre-NVD 8.88.8—
EchelonGraph scoreHIGH confidence

Score 8.8 from GitHub Security Advisory (severity: HIGH) published 2026-08-05. a secondary CVSS source baseline 8.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
8.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.8Exploit: None knownExposed: 0

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

Bolt CMS renders content field values through Twig's full application-level Environment with no SandboxExtension registered anywhere in the codebase. In src/Entity/Field.php, getTwigValue calls shouldBeRenderedAsTwig, which gates rendering only on the field definition's allow_twig flag and a regex checking for , , or ; when true, the raw field value is compiled and rendered via with no sandboxing.

CVSS v3
8.8
EG Score
8.8(high)
EG Risk
40(Track)
EG Risk 40/100SSVC: Track

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
Severity88% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
23%
KEV
Not listed

Published

August 5, 2026

Last Modified

August 10, 2026

Advisory Details (2)

Auto-updated Aug 5, 2026
No patch confirmed yet.
generic

core/src/Entity/Field.php at 6.1 · bolt/core · GitHub

https://github.com/bolt/core/blob/6.1/src/Entity/Field.php
generic

GitHub - bolt/core: 🧿 Bolt core · GitHub

https://github.com/bolt/core

Vendor Advisories for CVE-2026-71291(1)

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

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 28× in last 7d / 70× 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. 2026-08-20 22:56 UTCEPSS rescore
  2. 2026-08-20 22:21 UTCGHSA enrichment
  3. 2026-08-20 09:54 UTCGHSA enrichment
  4. 2026-08-19 21:27 UTCEG score recompute
  5. 2026-08-19 21:27 UTCGHSA enrichment
  6. 2026-08-19 17:04 UTCEPSS rescore
  7. 2026-08-19 08:55 UTCGHSA enrichment
  8. 2026-08-18 20:26 UTCEG score recompute
  9. 2026-08-18 20:26 UTCGHSA enrichment
  10. 2026-08-18 13:49 UTCEPSS rescore
  11. 2026-08-18 13:49 UTCEPSS rescore
  12. 2026-08-18 07:59 UTCGHSA enrichment
  13. 2026-08-17 19:31 UTCEG score recompute
  14. 2026-08-17 19:31 UTCGHSA enrichment
  15. 2026-08-17 13:47 UTCEPSS rescore
  16. 2026-08-17 06:15 UTCGHSA enrichment
  17. 2026-08-16 17:49 UTCEG score recompute
  18. 2026-08-16 17:49 UTCGHSA enrichment
  19. 2026-08-16 14:56 UTCEPSS rescore
  20. 2026-08-16 14:56 UTCEPSS rescore
  21. 2026-08-16 05:21 UTCEG score recompute
  22. 2026-08-16 05:21 UTCGHSA enrichment
  23. 2026-08-16 02:15 UTCEPSS rescore
  24. 2026-08-15 16:55 UTCGHSA enrichment
  25. 2026-08-15 04:28 UTCEG score recompute
Show 45 more
  1. 2026-08-15 04:28 UTCGHSA enrichment
  2. 2026-08-15 01:31 UTCEPSS rescore
  3. 2026-08-14 16:00 UTCGHSA enrichment
  4. 2026-08-14 03:33 UTCEG score recompute
  5. 2026-08-14 03:33 UTCGHSA enrichment
  6. 2026-08-13 22:00 UTCEPSS rescore
  7. 2026-08-13 15:06 UTCGHSA enrichment
  8. 2026-08-13 02:39 UTCGHSA enrichment
  9. 2026-08-12 14:12 UTCEG score recompute
  10. 2026-08-12 14:12 UTCGHSA enrichment
  11. 2026-08-12 13:51 UTCEPSS rescore
  12. 2026-08-12 01:45 UTCEG score recompute
  13. 2026-08-12 01:45 UTCGHSA enrichment
  14. 2026-08-11 13:18 UTCGHSA enrichment
  15. 2026-08-11 00:51 UTCEG score recompute
  16. 2026-08-11 00:51 UTCGHSA enrichment
  17. 2026-08-11 00:00 UTCEPSS rescore
  18. 2026-08-10 12:24 UTCEG score recompute
  19. 2026-08-10 12:24 UTCGHSA enrichment
  20. 2026-08-10 11:42 UTCGHSA enrichment
  21. 2026-08-10 11:21 UTCEG score recompute
  22. 2026-08-10 11:21 UTCGHSA enrichment
  23. 2026-08-10 08:32 UTCGHSA enrichment
  24. 2026-08-09 20:06 UTCEG score recompute
  25. 2026-08-09 20:06 UTCGHSA enrichment
  26. 2026-08-09 13:47 UTCEPSS rescore
  27. 2026-08-09 07:39 UTCGHSA enrichment
  28. 2026-08-08 19:12 UTCEG score recompute
  29. 2026-08-08 19:12 UTCGHSA enrichment
  30. 2026-08-08 16:37 UTCEPSS rescore
  31. 2026-08-08 06:44 UTCGHSA enrichment
  32. 2026-08-07 18:17 UTCEG score recompute
  33. 2026-08-07 18:17 UTCGHSA enrichment
  34. 2026-08-07 05:50 UTCGHSA enrichment
  35. 2026-08-06 17:23 UTCEG score recompute
  36. 2026-08-06 17:23 UTCGHSA enrichment
  37. 2026-08-06 13:47 UTCEPSS rescore
  38. 2026-08-06 04:56 UTCGHSA enrichment
  39. 2026-08-05 16:29 UTCEG score recompute
  40. 2026-08-05 16:29 UTCGHSA enrichment
  41. 2026-08-05 16:12 UTCEG score recompute
  42. 2026-08-05 16:12 UTCGHSA enrichment
  43. 2026-08-05 13:27 UTCEG score recompute
  44. 2026-08-05 13:07 UTCEG score recompute
  45. 2026-08-05 13:07 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-71291?
CVE-2026-71291 is a high vulnerability published on August 5, 2026. Bolt CMS renders content field values through Twig's full application-level Environment with no SandboxExtension registered anywhere in the codebase. In src/Entity/Field.php, getTwigValue calls shouldBeRenderedAsTwig, which gates rendering only on the field definition's allow_twig flag and a regex…
When was CVE-2026-71291 disclosed?
CVE-2026-71291 was first published in the National Vulnerability Database on August 5, 2026, with the most recent update on August 10, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-71291 actively exploited?
CVE-2026-71291 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 76.7% of all scored CVEs.
What is the CVSS score of CVE-2026-71291?
CVE-2026-71291 has a CVSS v3 base score of 8.8 (NVD).
How do I remediate CVE-2026-71291?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-71291, 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

Explore the affected products and dependency analysis for CVE-2026-71291

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