CVE-2026-46637

MEDIUMNVD 5.45.4—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 5.4 under NVD CVSS v3. EPSS exploit probability: 0.2%, top 93% 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
5.4EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.3%CVSS: 5.4Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

Twig is a template language for PHP. Prior to 3.26.0, several filters in twig/markdown-extra and twig/cssinliner-extra are registered with is_safe => [all], causing Twig to treat plain text or HTML output as safe in HTML, JavaScript, CSS, URL, and other contexts where the output is not properly escaped. This issue is fixed in version 3.26.0.

CVSS v3
5.4
EG Score
5.4MEDIUMmedium confidence
EG Risk
24
EG Risk 24/100

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
Severity54% × 45%
Exploitation0% × 40%
Automatability0% × 15%
EPSS PROB
0.3%
EPSS %ILE
21st
KEV
Not listed

Published

May 21, 2026

Last Modified

July 16, 2026

Advisory Details (4)

Auto-updated Jul 16, 2026
Patch available. Sources: github_commit, github_release, github.
githubMentions a patch (unverified)

HTML-output filters in twig/* extras incorrectly declared `is_safe => ['all']` · Advisory · twigphp/Twig · GitHub

https://github.com/twigphp/Twig/security/advisories/GHSA-jv8m-2544-3pg3
github_release Patch Available

v3.26.0

Patch available: twigphp/Twig v3.26.0

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

commit e36489d3521e (twigphp/Twig)

Patch available: twigphp/Twig v3.26.0 (contains commit e36489d3521e)

https://github.com/twigphp/Twig/commit/e36489d3521ecbfc08bdcc61294302557035f14a
github_commit Patch Available

commit 84982072c79a (twigphp/Twig)

Patch available: twigphp/Twig v3.26.0 (contains commit 84982072c79a)

https://github.com/twigphp/Twig/commit/84982072c79a7417b0d158a401d91344f3658299

Vendor Advisories for CVE-2026-46637(1)

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

Affected Packages

(6 across 5 ecosystems)
Packagist(2)
PackageVulnerable rangeFix by version rangeDependents
twig/cssinliner-extrav2.12.0 ... v3.9.0 (55 versions)
  • every version up to 3.26.0: fixed in 3.26.0
—
twig/markdown-extrav2.12.0 ... v3.9.0 (60 versions)
  • every version up to 3.26.0: fixed in 3.26.0
—
Debian:11(1)
PackageVulnerable rangeFix by version rangeDependents
php-twig2.14.3-1 ... 4.0.0~alpha1-1 (88 versions)
  • every version on: no fix on record
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
php-twig3.5.1-1, 3.5.1-1+deb12u1, 3.5.1-1+deb12u2
  • every version up to 3.5.1-1+deb12u3: fixed in 3.5.1-1+deb12u3
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
php-twig3.20.0-2 ... 3.26.0-1 (16 versions)
  • every version up to 3.27.0-0+deb13u1: fixed in 3.27.0-0+deb13u1
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
php-twig3.20.0-2 ... 3.24.0-1 (14 versions)
  • every version up to 3.26.0-1: fixed in 3.26.0-1
—

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 6× in last 7d / 25× 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 104 total refreshes for this CVE.

  1. 2026-10-10 20:00 UTCEPSS rescore
  2. 2026-10-09 20:07 UTCEPSS rescore
  3. 2026-10-08 17:12 UTCEPSS rescore
  4. 2026-10-07 23:48 UTCEPSS rescore
  5. 2026-10-06 15:18 UTCEPSS rescore
  6. 2026-10-05 17:43 UTCEPSS rescore
  7. 2026-10-03 14:25 UTCEPSS rescore
  8. 2026-10-01 19:50 UTCEPSS rescore
  9. 2026-09-30 15:03 UTCEPSS rescore
  10. 2026-09-30 02:40 UTCOSV refresh
  11. 2026-09-28 13:51 UTCEPSS rescore
  12. 2026-09-27 13:48 UTCEPSS rescore
  13. 2026-09-26 15:59 UTCEPSS rescore
  14. 2026-09-26 00:27 UTCEPSS rescore
  15. 2026-09-23 17:53 UTCEPSS rescore
  16. 2026-09-20 20:15 UTCEPSS rescore
  17. 2026-09-18 19:28 UTCEPSS rescore
  18. 2026-09-17 19:31 UTCEPSS rescore
  19. 2026-09-16 14:08 UTCEPSS rescore
  20. 2026-09-16 05:15 UTCEPSS rescore
  21. 2026-09-13 16:47 UTCEPSS rescore
  22. 2026-09-12 15:01 UTCEPSS rescore
  23. 2026-09-11 14:53 UTCEPSS rescore
  24. 2026-09-11 09:37 UTCEPSS rescore
  25. 2026-09-11 04:23 UTCOSV refresh
Show 75 more
  1. 2026-09-10 09:34 UTCEPSS rescore
  2. 2026-09-08 22:00 UTCEPSS rescore
  3. 2026-09-07 16:01 UTCEPSS rescore
  4. 2026-09-06 13:47 UTCEPSS rescore
  5. 2026-09-04 05:06 UTCEPSS rescore
  6. 2026-09-02 14:12 UTCEPSS rescore
  7. 2026-09-01 13:54 UTCEPSS rescore
  8. 2026-08-30 19:17 UTCEPSS rescore
  9. 2026-08-30 01:22 UTCEPSS rescore
  10. 2026-08-28 21:41 UTCEPSS rescore
  11. 2026-08-27 14:25 UTCEPSS rescore
  12. 2026-08-26 14:46 UTCEPSS rescore
  13. 2026-08-25 13:49 UTCEPSS rescore
  14. 2026-08-23 16:46 UTCEG score recompute
  15. 2026-08-23 00:19 UTCEPSS rescore
  16. 2026-08-21 23:49 UTCEPSS rescore
  17. 2026-08-21 21:44 UTCEG score recompute
  18. 2026-08-20 22:55 UTCEPSS rescore
  19. 2026-08-20 18:42 UTCEG score recompute
  20. 2026-08-19 17:04 UTCEPSS rescore
  21. 2026-08-18 13:48 UTCEPSS rescore
  22. 2026-08-17 13:47 UTCEPSS rescore
  23. 2026-08-17 09:46 UTCEG score recompute
  24. 2026-08-16 14:56 UTCEPSS rescore
  25. 2026-08-16 03:22 UTCEG score recompute
  26. 2026-08-16 02:14 UTCEPSS rescore
  27. 2026-08-15 01:30 UTCEPSS rescore
  28. 2026-08-14 01:55 UTCEG score recompute
  29. 2026-08-13 22:00 UTCEPSS rescore
  30. 2026-08-12 22:29 UTCEG score recompute
  31. 2026-08-12 13:51 UTCEPSS rescore
  32. 2026-08-11 23:29 UTCEG score recompute
  33. 2026-08-11 00:30 UTCEG score recompute
  34. 2026-08-11 00:00 UTCEPSS rescore
  35. 2026-08-10 00:25 UTCEG score recompute
  36. 2026-08-09 13:46 UTCEPSS rescore
  37. 2026-08-09 01:26 UTCEG score recompute
  38. 2026-08-08 16:37 UTCEPSS rescore
  39. 2026-08-07 19:12 UTCEG score recompute
  40. 2026-08-06 20:12 UTCEG score recompute
  41. 2026-08-06 13:47 UTCEPSS rescore
  42. 2026-08-05 21:12 UTCEG score recompute
  43. 2026-08-05 19:17 UTCEPSS rescore
  44. 2026-08-04 15:10 UTCEPSS rescore
  45. 2026-08-04 10:39 UTCEPSS rescore
  46. 2026-08-03 16:48 UTCEG score recompute
  47. 2026-08-03 10:36 UTCEPSS rescore
  48. 2026-08-02 16:23 UTCEG score recompute
  49. 2026-08-02 02:27 UTCEPSS rescore
  50. 2026-08-01 17:23 UTCEG score recompute
  51. 2026-08-01 04:16 UTCEPSS rescore
  52. 2026-07-30 16:28 UTCEPSS rescore
  53. 2026-07-30 01:30 UTCEPSS rescore
  54. 2026-07-29 17:39 UTCEG score recompute
  55. 2026-07-28 15:36 UTCEPSS rescore
  56. 2026-07-27 14:13 UTCEPSS rescore
  57. 2026-07-26 14:54 UTCEPSS rescore
  58. 2026-07-26 14:54 UTCEPSS rescore
  59. 2026-07-25 14:18 UTCEPSS rescore
  60. 2026-07-24 14:17 UTCEPSS rescore
  61. 2026-07-23 14:18 UTCEPSS rescore
  62. 2026-07-23 03:17 UTCEG score recompute▲ 0.30
  63. 2026-07-22 14:08 UTCEPSS rescore
  64. 2026-07-21 15:24 UTCEPSS rescore
  65. 2026-07-20 17:08 UTCEPSS rescore
  66. 2026-07-19 14:31 UTCEPSS rescore
  67. 2026-07-19 02:29 UTCEPSS rescore
  68. 2026-07-18 10:04 UTCEPSS rescore
  69. 2026-07-16 17:03 UTCEPSS rescore
  70. 2026-07-16 16:30 UTCNVD updateCVSS v3 → 5.4
  71. 2026-07-16 15:23 UTCMITRE cvelistV5CVSS v3 → 5.1
  72. 2026-07-15 20:24 UTCNVD updateCVSS v3 → 5.4
  73. 2026-07-15 16:57 UTCEPSS rescore
  74. 2026-07-14 21:36 UTCEG score recompute▲ 5.10
  75. 2026-07-14 21:35 UTCMITRE cvelistV5CVSS v3 → 5.1 · CVSS v4 → 5.1 · severity → MEDIUM

Related CVEs(same product + same CWE)

Frequently asked(5)

What is CVE-2026-46637?
CVE-2026-46637 is a medium vulnerability published on May 21, 2026. Twig is a template language for PHP. Prior to 3.26.0, several filters in twig/markdown-extra and twig/cssinliner-extra are registered with is_safe => [all], causing Twig to treat plain text or HTML output as safe in HTML, JavaScript, CSS, URL, and other contexts where the output is not properly…
When was CVE-2026-46637 disclosed?
CVE-2026-46637 was first published 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-2026-46637 actively exploited?
CVE-2026-46637 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.3% probability of exploitation in the next 30 days (21st percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-46637?
CVE-2026-46637 has a CVSS v3 base score of 5.4 (NVD).
How do I remediate CVE-2026-46637?
A fix for CVE-2026-46637 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-46637 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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