CVE-2026-55808

MEDIUMPre-NVD 5.45.4—
EchelonGraph scoreMEDIUM confidence

Score 5.4 from GitHub Security Advisory published 2026-07-11. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 5.4; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — 3 sources updated this week
5.4EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.4Exploit: None knownExposed: 0

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

Improper Neutralization of Input During Web Page Generation ("Cross-site Scripting") vulnerability in Drupal Drupal core allows Cross-Site Scripting (XSS). This issue affects Drupal core versions: from 0.0.0 to 10.5.12, from 10.6.0 to 10.6.11, from 11.2.0 to 11.2.14, from 11.3.0 to 11.3.12, from 0.0.0 to 11.0.*, from 0.0.0 to 11.1.*.

CVSS v3
5.4
EG Score
5.4(medium)
EG Risk
24(Track)
EG Risk 24/100SSVC: 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
Severity54% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
20%
KEV
Not listed

Published

July 10, 2026

Last Modified

July 16, 2026

Advisory Details (1)

Auto-updated Jul 13, 2026
No patch confirmed yet.
generic

Drupal core - Moderately critical - Improper validation - SA-CORE-2026-009 | Drupal.org

https://www.drupal.org/sa-core-2026-009

Vendor Advisories for CVE-2026-55808(1)

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

Affected Packages

(1 across 1 ecosystem)
Packagist(1)
PackageVulnerable rangeFixed inDependents
drupal/core10.0.0 ... 9.5.9 (477 versions)11.2.0—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 12× in last 7d / 53× 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 158 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-55808?
CVE-2026-55808 is a medium vulnerability published on July 10, 2026. Improper Neutralization of Input During Web Page Generation ("Cross-site Scripting") vulnerability in Drupal Drupal core allows Cross-Site Scripting (XSS). This issue affects Drupal core versions: from 0.0.0 to 10.5.12, from 10.6.0 to 10.6.11, from 11.2.0 to 11.2.14, from 11.3.0 to 11.3.12, from…
When was CVE-2026-55808 disclosed?
CVE-2026-55808 was first published in the National Vulnerability Database on July 10, 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-2026-55808 actively exploited?
CVE-2026-55808 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 80.0% of all scored CVEs.
What is the CVSS score of CVE-2026-55808?
CVE-2026-55808 has a CVSS v3.1 base score of 5.4 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-55808?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-55808, 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

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