CVE-2026-18259

HIGHPre-NVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-08-26. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — 3 sources updated this week
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.2%CVSS: 7.5Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

Observable Timing Discrepancy vulnerability in Drupal Token Content Access allows Brute Force. This issue affects Token Content Access versions: from 0.0.0 to 3.1.2.

CVSS v3
7.5
EG Score
7.5HIGHmedium confidence
EG Risk
49
EG Risk 49/100CISA 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
Severity75% × 45%
Exploitation0% × 40%
Automatability100% × 15%
CISA SSVC: Track at low or medium mission impact; Attend at high (mission-essential systems).
Action: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
EPSS PROB
0.2%
EPSS %ILE
14th
KEV
Not listed

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

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation none (CISA Vulnrichment) · Automatable yes (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 25, 2026

Last Modified

August 28, 2026

Advisory Details (1)

Auto-updated Aug 26, 2026
Patch available.
generic

Token Content Access - Moderately critical - Access bypass - SA-CONTRIB-2026-090 | Drupal.org

https://www.drupal.org/sa-contrib-2026-090

Vendor Advisories for CVE-2026-18259(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:https://packages.drupal.org/8(1)
PackageVulnerable rangeFix by version rangeDependents
drupal/tca—
  • every version up to 3.1.2: fixed in 3.1.2
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 24× in last 7d / 109× 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 176 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-18259?
CVE-2026-18259 is a high vulnerability published on August 25, 2026. Observable Timing Discrepancy vulnerability in Drupal Token Content Access allows Brute Force. This issue affects Token Content Access versions: from 0.0.0 to 3.1.2.
When was CVE-2026-18259 disclosed?
CVE-2026-18259 was first published on August 25, 2026, with the most recent update on August 28, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-18259 actively exploited?
CVE-2026-18259 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (14th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-18259?
CVE-2026-18259 has a CVSS v3.1 base score of 7.5 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-18259?
A fix for CVE-2026-18259 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-18259 are linked in the Vendor Advisories panel on this page.

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