CVE-2026-46639

MEDIUMNVD 6.56.5—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 6.5 under NVD CVSS v3. EPSS exploit probability: 0.4%, top 72% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
6.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 6.5Exploit: None knownExposed: 0

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

Twig is a template language for PHP. From 3.24.0 until 3.26.0, object-destructuring assignment compiles CoreExtension::getAttribute() with the sandbox argument hardcoded to false, disabling property and method policy checks and allowing an attacker with write access to a sandboxed Twig template to read public properties or invoke public getters on objects passed to the template engine. This issue is fixed in version 3.26.0.

CVSS v3
6.5
EG Score
6.5(medium)
EG Risk
29(Track)
EG Risk 29/100SSVC: 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
Severity65% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
33%
KEV
Not listed

Published

May 21, 2026

Last Modified

July 16, 2026

Advisory Details (2)

Auto-updated Jul 15, 2026
Patch available. Sources: github, github_release.
github Patch Available

Sandbox property and method bypass via object-destructuring assignment · Advisory · twigphp/Twig · GitHub

https://github.com/twigphp/Twig/security/advisories/GHSA-mm6w-gr99-p3jj
github_release Patch Available

v3.26.0

Patch available: twigphp/Twig v3.26.0

https://github.com/twigphp/Twig/releases/tag/v3.26.0

Vendor Advisories for CVE-2026-46639(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 2 ecosystems)
Debian:14(1)
PackageVulnerable rangeFixed inDependents
php-twig3.20.0-2 ... 3.24.0-1 (14 versions)3.26.0-1—
Packagist(1)
PackageVulnerable rangeFixed inDependents
twig/twigv3.24.0, v3.25.03.26.0—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 5× in last 7d / 36× 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. 2026-09-04 05:06 UTCEPSS rescore
  2. 2026-09-02 14:12 UTCEPSS rescore
  3. 2026-09-01 13:54 UTCEPSS rescore
  4. 2026-08-30 19:17 UTCEPSS rescore
  5. 2026-08-30 01:22 UTCEPSS rescore
  6. 2026-08-28 21:41 UTCEPSS rescore
  7. 2026-08-27 14:25 UTCEPSS rescore
  8. 2026-08-26 14:46 UTCEPSS rescore
  9. 2026-08-25 13:49 UTCEPSS rescore
  10. 2026-08-23 16:46 UTCEG score recompute
  11. 2026-08-23 00:19 UTCEPSS rescore
  12. 2026-08-21 23:49 UTCEPSS rescore
  13. 2026-08-21 21:44 UTCEG score recompute
  14. 2026-08-20 22:55 UTCEPSS rescore
  15. 2026-08-20 18:42 UTCEG score recompute
  16. 2026-08-19 17:04 UTCEPSS rescore
  17. 2026-08-18 13:48 UTCEPSS rescore
  18. 2026-08-17 13:47 UTCEPSS rescore
  19. 2026-08-17 09:46 UTCEG score recompute
  20. 2026-08-16 14:56 UTCEPSS rescore
  21. 2026-08-16 03:22 UTCEG score recompute
  22. 2026-08-16 02:14 UTCEPSS rescore
  23. 2026-08-15 01:30 UTCEPSS rescore
  24. 2026-08-14 01:55 UTCEG score recompute
  25. 2026-08-13 22:00 UTCEPSS rescore
Show 47 more
  1. 2026-08-12 14:13 UTCEG score recompute
  2. 2026-08-12 13:51 UTCEPSS rescore
  3. 2026-08-11 10:31 UTCEG score recompute
  4. 2026-08-11 00:00 UTCEPSS rescore
  5. 2026-08-10 08:02 UTCEG score recompute
  6. 2026-08-09 13:46 UTCEPSS rescore
  7. 2026-08-09 05:39 UTCEG score recompute
  8. 2026-08-08 16:37 UTCEPSS rescore
  9. 2026-08-08 03:16 UTCEG score recompute
  10. 2026-08-07 00:53 UTCEG score recompute
  11. 2026-08-06 13:47 UTCEPSS rescore
  12. 2026-08-05 21:12 UTCEG score recompute
  13. 2026-08-05 19:17 UTCEPSS rescore
  14. 2026-08-04 15:10 UTCEPSS rescore
  15. 2026-08-04 10:39 UTCEPSS rescore
  16. 2026-08-03 22:10 UTCEG score recompute
  17. 2026-08-03 10:36 UTCEPSS rescore
  18. 2026-08-02 19:47 UTCEG score recompute
  19. 2026-08-02 02:27 UTCEPSS rescore
  20. 2026-08-01 17:23 UTCEG score recompute
  21. 2026-08-01 04:16 UTCEPSS rescore
  22. 2026-07-30 16:28 UTCEPSS rescore
  23. 2026-07-30 01:30 UTCEPSS rescore
  24. 2026-07-29 17:39 UTCEG score recompute
  25. 2026-07-28 15:36 UTCEPSS rescore
  26. 2026-07-27 14:13 UTCEPSS rescore
  27. 2026-07-26 14:54 UTCEPSS rescore
  28. 2026-07-26 14:54 UTCEPSS rescore
  29. 2026-07-25 14:18 UTCEPSS rescore
  30. 2026-07-24 14:17 UTCEPSS rescore
  31. 2026-07-23 14:18 UTCEPSS rescore
  32. 2026-07-23 03:17 UTCEG score recompute▼ 0.60
  33. 2026-07-22 14:08 UTCEPSS rescore
  34. 2026-07-21 15:24 UTCEPSS rescore
  35. 2026-07-20 17:08 UTCEPSS rescore
  36. 2026-07-19 14:31 UTCEPSS rescore
  37. 2026-07-19 02:29 UTCEPSS rescore
  38. 2026-07-18 10:04 UTCEPSS rescore
  39. 2026-07-16 17:03 UTCEPSS rescore
  40. 2026-07-16 04:26 UTCNVD updateCVSS v3 → 6.5 · severity → MEDIUM
  41. 2026-07-15 16:57 UTCEPSS rescore
  42. 2026-07-14 21:36 UTCEG score recompute▲ 7.10
  43. 2026-07-14 21:35 UTCMITRE cvelistV5CVSS v3 → 7.1 · CVSS v4 → 7.1
  44. 2026-06-14 23:18 UTCEPSS rescore
  45. 2026-06-13 23:00 UTCEPSS rescore
  46. 2026-06-12 23:12 UTCEPSS rescore
  47. 2026-05-24 06:10 UTCEG score recompute

Frequently asked(5)

What is CVE-2026-46639?
CVE-2026-46639 is a medium vulnerability published on May 21, 2026. Twig is a template language for PHP. From 3.24.0 until 3.26.0, object-destructuring assignment compiles CoreExtension::getAttribute() with the sandbox argument hardcoded to false, disabling property and method policy checks and allowing an attacker with write access to a sandboxed Twig template to…
When was CVE-2026-46639 disclosed?
CVE-2026-46639 was first published in the National Vulnerability Database on May 21, 2026, with the most recent update on July 16, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-46639 actively exploited?
CVE-2026-46639 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 67.4% of all scored CVEs.
What is the CVSS score of CVE-2026-46639?
CVE-2026-46639 has a CVSS v3 base score of 6.5 (NVD).
How do I remediate CVE-2026-46639?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-46639, 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-2026-46639

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